Politician Stock Trading API: Rankings & Portfolios

Q: How do I find the politicians with the best stock trading returns?

Call /congress/politicians with sort=return. It ranks members by the average return of their purchases against the S&P 500 over the window you choose; add current_only=true for members serving now. Each record also carries win_rate_buys, the share of purchases that beat the S&P 500.

Q: Can I get a politician's stock portfolio through the API?

Yes. /congress/politician?member=P000197 returns Nancy Pelosi's estimated current holdings with shares, value, cost, return and weight, next to her profile, trading statistics for every period and most-traded stocks. It works with any member's ID or member slug.

Q: Which members of Congress trade the most?

/congress/politicians?window=1Y&sort=trades ranks members by number of trades over the last year, and sort=volume ranks them by estimated dollar volume. Filter by party, state or current_only.

Part of the Congressional Trading API: each trade, with its amount and dates, is in Congress Trades, and congressional activity in a single stock is in Congress Trades by Stock. Prefer to browse? Every member has a page on our Congress Trading Tracker.

GET https://data.businessquant.com/congress/politicians?window={window}&api_key={api_key}

GET https://data.businessquant.com/congress/politician?member={member}&api_key={api_key}

1. Request Parameters — Politician Rankings

/congress/politicians returns every member of Congress who traded in a period, ranked. Periods are given with window: 30D, 90D, 180D, YTD, 1Y or ALL (all time, the default). Rank by dollar volume, number of trades, buys, sells, latest disclosure or the return of their purchases, and narrow by party, state or members serving now.

Parameter	Description
api_key	Required Your unique API key for authentication and usage tracking.
window	Optional Period the ranking covers. Default `ALL`. Format: `window=1Y`
sort	Optional Ranking: `volume` (default, buy + sell dollar volume), `trades`, `buys`, `sells`, `last_filing` (most recent disclosure) or `return` (average return of purchases against the S&P 500). Format: `sort=trades`
party	Optional Only members of this party, e.g. `D` or `R`. Format: `party=R`
state	Optional Only members from this state (two-letter code). Format: `state=TX`
current_only	Optional Only members serving now. Default `false`. Format: `current_only=true`
page	Optional Page number. Defaults to `1`. Format: `page=1`
page_size	Optional Records per page. Maximum 500. Default `100`. Format: `page_size=50`

Example cURL — Most Active Traders, Last Year

curl -X GET "https://data.businessquant.com/congress/politicians?window=1Y&sort=trades&page_size=10&api_key=YOUR_API_KEY"

Sample Response — rankings (1 record shown)

{
    "metadata": {
        "window": "1Y",
        "sort": "trades",
        "page": 1,
        "page_size": 10,
        "total_records": 113,
        "total_pages": 12,
        "note": ""
    },
    "data": [
        {
            "bioguide_id": "K000389",
            "politician_name": "Ro Khanna",
            "chamber": "House",
            "party": "D",
            "state": "CA",
            "district": 17,
            "is_current_member": true,
            "window": "1Y",
            "n_trades": 5559,
            "n_buys": 2938,
            "n_sells": 2621,
            "n_exchanges": 0,
            "buy_volume_est": 44277968,
            "sell_volume_est": 39363808.5,
            "net_volume_est": 4914159.5,
            "n_filings": 12,
            "first_trade_date": "2010-01-03",
            "last_trade_date": "2026-09-30",
            "last_filing_date": "2026-10-07",
            "n_tickers": 547,
            "top_tickers": [
                "MU",
                "FDS",
                "MSFT",
                "UBER",
                "BRK-B"
            ],
            "top_sector": "Technology",
            "median_filing_delay_days": 22,
            "pct_late": 0.0059363194819212085,
            "avg_excess_return_buys": 0.015298716513429124,
            "win_rate_buys": 0.5152462861610634
        }
    ]
}

2. Request Parameters — One Politician

/congress/politician returns one member in a single call: their profile (chamber, party, state, district, committees), trading statistics for every period from 30 days to all time, their estimated current stock portfolio with value, cost, return and weight, and the stocks they trade most.

Parameter	Description
api_key	Required Your unique API key for authentication and usage tracking.
member	Required The member: their member ID (`P000197`) or member slug (`nancy-pelosi-p000197`). Every trade record carries the ID as `bioguide_id`. Format: `member=P000197`

Example cURL — Nancy Pelosi

curl -X GET "https://data.businessquant.com/congress/politician?member=P000197&api_key=YOUR_API_KEY"

Sample Response — one politician (lists cut to 2)

{
    "metadata": {
        "member": "P000197",
        "politician_name": "Nancy Pelosi",
        "note": ""
    },
    "data": {
        "profile": {
            "bioguide_id": "P000197",
            "politician_name": "Nancy Pelosi",
            "chamber": "House",
            "party": "D",
            "state": "CA",
            "district": 11,
            "is_current_member": true,
            "committees": null,
            "n_trades": 211,
            "n_buys": 129,
            "n_sells": 80,
            "n_exchanges": 2,
            "buy_volume_est": 116068564.5,
            "sell_volume_est": 110618549.5,
            "n_tickers": 44,
            "first_trade_date": "2013-01-26",
            "last_trade_date": "2026-09-08",
            "last_filing_date": "2026-10-02"
        },
        "stats": [
            {
                "window": "90D",
                "n_trades": 8,
                "n_buys": 8,
                "n_sells": 0,
                "n_exchanges": 0,
                "buy_volume_est": 10125004,
                "sell_volume_est": 0,
                "net_volume_est": 10125004,
                "n_filings": 2,
                "first_trade_date": "2026-07-24",
                "last_trade_date": "2026-09-08",
                "last_filing_date": "2026-10-02",
                "n_tickers": 2,
                "top_tickers": [
                    "BE",
                    "INTC"
                ],
                "top_sector": "Industrials",
                "median_filing_delay_days": 26.5,
                "pct_late": 0,
                "avg_excess_return_buys": -0.05460919040759641,
                "win_rate_buys": 0.6666666666666666
            },
            {
                "window": "180D",
                "n_trades": 10,
                "n_buys": 10,
                "n_sells": 0,
                "n_exchanges": 0,
                "buy_volume_est": 13875005,
                "sell_volume_est": 0,
                "net_volume_est": 13875005,
                "n_filings": 3,
                "first_trade_date": "2026-05-29",
                "last_trade_date": "2026-09-08",
                "last_filing_date": "2026-10-02",
                "n_tickers": 3,
                "top_tickers": [
                    "BE",
                    "INTC",
                    "UBER"
                ],
                "top_sector": "Industrials",
                "median_filing_delay_days": 25,
                "pct_late": 0,
                "avg_excess_return_buys": -0.05460919040759641,
                "win_rate_buys": 0.6666666666666666
            }
        ],
        "holdings": [
            {
                "ticker": "V",
                "issuer_name": "Visa Inc.",
                "sector": "Financial Services",
                "held_shares_est": 46047.58403683807,
                "held_value_est": 19592786.08215079,
                "held_cost_est": 15000000.5,
                "held_return": 0.3061856952705295,
                "held_weight": 0.1345322667637085,
                "held_since": "2026-05-15",
                "price_latest": 425.49,
                "price_latest_date": "2026-11-02"
            },
            {
                "ticker": "CRM",
                "issuer_name": "Salesforce, Inc.",
                "sector": "Technology",
                "held_shares_est": 86450.35430168854,
                "held_value_est": 19552476.47411757,
                "held_cost_est": 15000000.5,
                "held_return": 0.30349838815789165,
                "held_weight": 0.13425548412961408,
                "held_since": "2026-05-15",
                "price_latest": 226.17,
                "price_latest_date": "2026-11-02"
            }
        ],
        "top_traded": [
            {
                "ticker": "AAPL",
                "issuer_name": "Apple Inc.",
                "sector": "Technology",
                "asset_class": "Stock",
                "n_trades": 34,
                "n_buys": 17,
                "n_sells": 17,
                "buy_volume_est": 10825008.5,
                "sell_volume_est": 59775008.5,
                "net_volume_est": -48950000,
                "first_trade_date": "2016-01-13",
                "last_trade_date": "2025-12-30",
                "avg_excess_return_buys": 3.1685995337542474
            },
            {
                "ticker": "NVDA",
                "issuer_name": "Nvidia Corp",
                "sector": "Technology",
                "asset_class": "Option",
                "n_trades": 15,
                "n_buys": 11,
                "n_sells": 4,
                "buy_volume_est": 17800005.5,
                "sell_volume_est": 9175002,
                "net_volume_est": 8625003.5,
                "first_trade_date": "2021-06-03",
                "last_trade_date": "2026-01-16",
                "avg_excess_return_buys": 3.3566110886770457
            }
        ]
    }
}

3. Response Fields

Every response is a metadata object (the filters applied, and for rankings the page, page size, total records and total pages) and a data payload. Dollar volumes and portfolio values are estimates and carry the _est suffix. Returns are decimals: 0.12 is 12%.

`/congress/politicians` and the `stats` of `/congress/politician`

One record per member for the chosen window. A member's own stats list has one such record per period, without the member's name and profile fields.

Field	Type	Description
bioguide_id	string	Member ID.
politician_name	string	Name of the member.
chamber / party / state / district	string	The member's chamber, party, state and district.
is_current_member	boolean	`true` while the member is serving.
window	string	Period the record covers: `30D`, `90D`, `180D`, `YTD`, `1Y` or `ALL`.
n_trades	integer	Trades in the period.
n_buys / n_sells / n_exchanges	integer	Trades by direction.
buy_volume_est	number	Estimated dollar volume bought.
sell_volume_est	number	Estimated dollar volume sold.
net_volume_est	number	Bought minus sold.
n_filings	integer	Disclosure reports filed in the period.
first_trade_date / last_trade_date	string	First and latest trade in the period.
last_filing_date	string	Latest disclosure.
n_tickers	integer	Distinct stocks traded.
top_tickers	array\|null	Most-traded tickers, most active first.
top_sector	string\|null	Sector traded most.
median_filing_delay_days	number\|null	Typical number of days the member takes to disclose a trade.
pct_late	number\|null	Share of trades disclosed after the 45-day deadline (0 to 1).
avg_excess_return_buys	number\|null	Average return of the member's purchases since the trade, minus the S&P 500 over the same dates.
win_rate_buys	number\|null	Share of purchases that have beaten the S&P 500 since the trade (0 to 1).

`/congress/politician`

data is an object with four parts: profile (the member and their all-time totals, plus committees), stats (one record per period, fields as above), holdings and top_traded.

Field	Type	Description
profile.committees	array\|null	Committees the member sits on.
holdings[].ticker / issuer_name / sector	string	The stock held.
holdings[].held_shares_est	number	Estimated shares held today.
holdings[].held_value_est	number	Estimated value at the latest close.
holdings[].held_cost_est	number	Estimated dollars invested in the position.
holdings[].held_return	number\|null	Estimated return on the position.
holdings[].held_weight	number	Share of the member's estimated stock portfolio (0 to 1).
holdings[].held_since	string	Date the position was opened.
holdings[].price_latest / price_latest_date	number / string	Latest close and its date.
top_traded[].ticker / issuer_name / sector / asset_class	string	The stock traded.
top_traded[].n_trades / n_buys / n_sells	integer	All-time trades in the stock by the member.
top_traded[].buy_volume_est / sell_volume_est / net_volume_est	number	Estimated dollars bought, sold and net.
top_traded[].first_trade_date / last_trade_date	string	First and latest trade in the stock.
top_traded[].avg_excess_return_buys	number\|null	Average return of the member's purchases of the stock against the S&P 500.

4. Endpoint Variations

Copy any of the following directly into your application or HTTP client.

1. Most Active Traders in Congress — Members ranked by number of trades over the last year.

https://data.businessquant.com/congress/politicians?window=1Y&sort=trades&api_key=YOUR_API_KEY

2. Best-Performing Politicians — Current members ranked by how their purchases did against the S&P 500.

https://data.businessquant.com/congress/politicians?window=ALL&sort=return&current_only=true&api_key=YOUR_API_KEY

3. Biggest Traders by Dollar Volume — One party, year to date.

https://data.businessquant.com/congress/politicians?window=YTD&party=R&sort=volume&api_key=YOUR_API_KEY

4. One State's Delegation — Current members from Texas, latest disclosure first.

https://data.businessquant.com/congress/politicians?state=TX&current_only=true&sort=last_filing&api_key=YOUR_API_KEY

5. Politician Portfolio — A member's profile, stats per period, estimated holdings and most-traded stocks.

https://data.businessquant.com/congress/politician?member=nancy-pelosi-p000197&api_key=YOUR_API_KEY

6. That Politician's Trades — The same member's disclosed trades, newest first.

https://data.businessquant.com/congress/trades?member=P000197&api_key=YOUR_API_KEY

5. API Response Sample — Politician Rankings

The most active traders in Congress over the last year, ranked by number of trades — 113 members traded in the period, the top 10 shown.

Sample Endpoint https://data.businessquant.com/congress/politicians?window=1Y&sort=trades&page_size=10&api_key=YOUR_API_KEY

API Response — Politician Rankings

Window 1Y · sorted by trades · 113 members

{
    "metadata": {
        "window": "1Y",
        "sort": "trades",
        "page": 1,
        "page_size": 10,
        "total_records": 113,
        "total_pages": 12,
        "note": ""
    },
    "data": [
        {
            "bioguide_id": "K000389",
            "politician_name": "Ro Khanna",
            "chamber": "House",
            "party": "D",
            "state": "CA",
            "district": 17,
            "is_current_member": true,
            "window": "1Y",
            "n_trades": 5559,
            "n_buys": 2938,
            "n_sells": 2621,
            "n_exchanges": 0,
            "buy_volume_est": 44277968,
            "sell_volume_est": 39363808.5,
            "net_volume_est": 4914159.5,
            "n_filings": 12,
            "first_trade_date": "2010-01-03",
            "last_trade_date": "2026-09-30",
            "last_filing_date": "2026-10-07",
            "n_tickers": 547,
            "top_tickers": [
                "MU",
                "FDS",
                "MSFT",
                "UBER",
                "BRK-B"
            ],
            "top_sector": "Technology",
            "median_filing_delay_days": 22,
            "pct_late": 0.0059363194819212085,
            "avg_excess_return_buys": 0.015298716513429124,
            "win_rate_buys": 0.5152462861610634
        },
        {
            "bioguide_id": "C001123",
            "politician_name": "Gilbert Ray Cisneros, Jr.",
            "chamber": "House",
            "party": "D",
            "state": "CA",
            "district": 31,
            "is_current_member": true,
            "window": "1Y",
            "n_trades": 1239,
            "n_buys": 771,
            "n_sells": 464,
            "n_exchanges": 4,
            "buy_volume_est": 13432885.5,
            "sell_volume_est": 10921232,
            "net_volume_est": 2511653.5,
            "n_filings": 12,
            "first_trade_date": "2025-10-02",
            "last_trade_date": "2026-10-01",
            "last_filing_date": "2026-10-12",
            "n_tickers": 393,
            "top_tickers": [
                "DASH",
                "APP",
                "FLEX",
                "AMZN",
                "FSV"
            ],
            "top_sector": "Technology",
            "median_filing_delay_days": 26,
            "pct_late": 0.0516545601291364,
            "avg_excess_return_buys": -0.03006363045506755,
            "win_rate_buys": 0.4406779661016949
        },
        {
            "bioguide_id": "M001157",
            "politician_name": "Michael T. McCaul",
            "chamber": "House",
            "party": "R",
            "state": "TX",
            "district": 10,
            "is_current_member": true,
            "window": "1Y",
            "n_trades": 1073,
            "n_buys": 572,
            "n_sells": 501,
            "n_exchanges": 0,
            "buy_volume_est": 42889788.5,
            "sell_volume_est": 31079252,
            "net_volume_est": 11810536.5,
            "n_filings": 10,
            "first_trade_date": "2025-10-01",
            "last_trade_date": "2026-08-31",
            "last_filing_date": "2026-10-14",
            "n_tickers": 142,
            "top_tickers": [
                "INTU",
                "SPGI",
                "SAP",
                "ASML",
                "MELI"
            ],
            "top_sector": "Technology",
            "median_filing_delay_days": 24,
            "pct_late": 0.08294501397949673,
            "avg_excess_return_buys": 0.03952226669488998,
            "win_rate_buys": 0.564935064935065
        },
        {
            "bioguide_id": "M001136",
            "politician_name": "Lisa C. McClain",
            "chamber": "House",
            "party": "R",
            "state": "MI",
            "district": 9,
            "is_current_member": true,
            "window": "1Y",
            "n_trades": 487,
            "n_buys": 164,
            "n_sells": 323,
            "n_exchanges": 0,
            "buy_volume_est": 1784582,
            "sell_volume_est": 2755661.5,
            "net_volume_est": -971079.5,
            "n_filings": 6,
            "first_trade_date": "2025-10-14",
            "last_trade_date": "2026-09-30",
            "last_filing_date": "2026-10-12",
            "n_tickers": 172,
            "top_tickers": [
                "AAPL",
                "ASML",
                "CACI",
                "CIEN",
                "META"
            ],
            "top_sector": "Technology",
            "median_filing_delay_days": 22,
            "pct_late": 0,
            "avg_excess_return_buys": 0.03460185459365268,
            "win_rate_buys": 0.5095541401273885
        },
        {
            "bioguide_id": "M001232",
            "politician_name": "April McClain Delaney",
            "chamber": "House",
            "party": "D",
            "state": "MD",
            "district": 6,
            "is_current_member": true,
            "window": "1Y",
            "n_trades": 361,
            "n_buys": 156,
            "n_sells": 204,
            "n_exchanges": 1,
            "buy_volume_est": 1860578,
            "sell_volume_est": 6508602,
            "net_volume_est": -4648024,
            "n_filings": 11,
            "first_trade_date": "2025-10-01",
            "last_trade_date": "2026-08-25",
            "last_filing_date": "2026-09-09",
            "n_tickers": 42,
            "top_tickers": [
                "CHRW",
                "HUBB",
                "TSCO",
                "MIDD",
                "SCI"
            ],
            "top_sector": "Industrials",
            "median_filing_delay_days": 19,
            "pct_late": 0,
            "avg_excess_return_buys": -0.09376848666945306,
            "win_rate_buys": 0.2948717948717949
        },
        {
            "bioguide_id": "L000595",
            "politician_name": "Julia Letlow",
            "chamber": "House",
            "party": "R",
            "state": "LA",
            "district": 5,
            "is_current_member": true,
            "window": "1Y",
            "n_trades": 257,
            "n_buys": 164,
            "n_sells": 93,
            "n_exchanges": 0,
            "buy_volume_est": 1385582,
            "sell_volume_est": 744046.5,
            "net_volume_est": 641535.5,
            "n_filings": 2,
            "first_trade_date": "2024-10-23",
            "last_trade_date": "2026-02-20",
            "last_filing_date": "2026-03-12",
            "n_tickers": 112,
            "top_tickers": [
                "CRM",
                "AAPL",
                "META",
                "MSFT",
                "ABBV"
            ],
            "top_sector": "Technology",
            "median_filing_delay_days": 274,
            "pct_late": 0.8210116731517509,
            "avg_excess_return_buys": 0.08737310266734917,
            "win_rate_buys": 0.4244604316546763
        },
        {
            "bioguide_id": "J000310",
            "politician_name": "Julie Johnson",
            "chamber": "House",
            "party": "D",
            "state": "TX",
            "district": 32,
            "is_current_member": true,
            "window": "1Y",
            "n_trades": 221,
            "n_buys": 43,
            "n_sells": 177,
            "n_exchanges": 1,
            "buy_volume_est": 344021.5,
            "sell_volume_est": 1416088.5,
            "net_volume_est": -1072067,
            "n_filings": 5,
            "first_trade_date": "2025-03-15",
            "last_trade_date": "2026-05-12",
            "last_filing_date": "2026-08-05",
            "n_tickers": 94,
            "top_tickers": [
                "CARR",
                "CMS",
                "DE",
                "GOOG",
                "MDLZ"
            ],
            "top_sector": "Industrials",
            "median_filing_delay_days": 28,
            "pct_late": 0.34841628959276016,
            "avg_excess_return_buys": -0.09182932583256265,
            "win_rate_buys": 0.27906976744186046
        },
        {
            "bioguide_id": "H001082",
            "politician_name": "Kevin Hern",
            "chamber": "House",
            "party": "R",
            "state": "OK",
            "district": 1,
            "is_current_member": true,
            "window": "1Y",
            "n_trades": 211,
            "n_buys": 29,
            "n_sells": 172,
            "n_exchanges": 10,
            "buy_volume_est": 5476014.5,
            "sell_volume_est": 14557586,
            "net_volume_est": -9081571.5,
            "n_filings": 14,
            "first_trade_date": "2025-10-06",
            "last_trade_date": "2026-10-23",
            "last_filing_date": "2026-10-28",
            "n_tickers": 83,
            "top_tickers": [
                "DVN",
                "HD",
                "BSX",
                "LMT",
                "MRSH"
            ],
            "top_sector": "Industrials",
            "median_filing_delay_days": 20,
            "pct_late": 0,
            "avg_excess_return_buys": 0.10496272014794128,
            "win_rate_buys": 1
        }
        // … 2 more items in the full API response
    ]
}

Member	Chamber	Trades	Buys	Sells	Bought (est.)	Sold (est.)	Top Tickers	Last Disclosure
Ro Khanna D-CA	House	5,559	2,938	2,621	$44.28M	$39.36M	MU, FDS, MSFT	2026-10-07
Gilbert Ray Cisneros, Jr. D-CA	House	1,239	771	464	$13.43M	$10.92M	DASH, APP, FLEX	2026-10-12
Michael T. McCaul R-TX	House	1,073	572	501	$42.89M	$31.08M	INTU, SPGI, SAP	2026-10-14
Lisa C. McClain R-MI	House	487	164	323	$1.78M	$2.76M	AAPL, ASML, CACI	2026-10-12
April McClain Delaney D-MD	House	361	156	204	$1.86M	$6.51M	CHRW, HUBB, TSCO	2026-09-09
Julia Letlow R-LA	House	257	164	93	$1.39M	$744.0K	CRM, AAPL, META	2026-03-12
Julie Johnson D-TX	House	221	43	177	$344.0K	$1.42M	CARR, CMS, DE	2026-08-05
Kevin Hern R-OK	House	211	29	172	$5.48M	$14.56M	DVN, HD, BSX	2026-10-28
David J. Taylor R-OH	House	181	104	77	$856.6K	$763.0K	AVGO, GOOGL, HD	2026-10-29
Scott H. Peters D-CA	House	151	82	69	$21.60M	$20.04M	—	2026-10-15

10 of 113 members shown · Change sort to rank by volume, buys, sells, latest disclosure or return.

6. API Response Sample — Politician Portfolio

Nancy Pelosi's profile, trading statistics and estimated stock portfolio in one call — 211 disclosed trades in 44 stocks; the 10 largest estimated holdings shown.

Sample Endpoint https://data.businessquant.com/congress/politician?member=P000197&api_key=YOUR_API_KEY

API Response — Politician Portfolio

Nancy Pelosi · D-CA · House

{
    "metadata": {
        "member": "P000197",
        "politician_name": "Nancy Pelosi",
        "note": ""
    },
    "data": {
        "profile": {
            "bioguide_id": "P000197",
            "politician_name": "Nancy Pelosi",
            "chamber": "House",
            "party": "D",
            "state": "CA",
            "district": 11,
            "is_current_member": true,
            "committees": null,
            "n_trades": 211,
            "n_buys": 129,
            "n_sells": 80,
            "n_exchanges": 2,
            "buy_volume_est": 116068564.5,
            "sell_volume_est": 110618549.5,
            "n_tickers": 44,
            "first_trade_date": "2013-01-26",
            "last_trade_date": "2026-09-08",
            "last_filing_date": "2026-10-02"
        },
        "stats": [
            {
                "window": "90D",
                "n_trades": 8,
                "n_buys": 8,
                "n_sells": 0,
                "n_exchanges": 0,
                "buy_volume_est": 10125004,
                "sell_volume_est": 0,
                "net_volume_est": 10125004,
                "n_filings": 2,
                "first_trade_date": "2026-07-24",
                "last_trade_date": "2026-09-08",
                "last_filing_date": "2026-10-02",
                "n_tickers": 2,
                "top_tickers": [
                    "BE",
                    "INTC"
                ],
                "top_sector": "Industrials",
                "median_filing_delay_days": 26.5,
                "pct_late": 0,
                "avg_excess_return_buys": -0.05460919040759641,
                "win_rate_buys": 0.6666666666666666
            },
            {
                "window": "180D",
                "n_trades": 10,
                "n_buys": 10,
                "n_sells": 0,
                "n_exchanges": 0,
                "buy_volume_est": 13875005,
                "sell_volume_est": 0,
                "net_volume_est": 13875005,
                "n_filings": 3,
                "first_trade_date": "2026-05-29",
                "last_trade_date": "2026-09-08",
                "last_filing_date": "2026-10-02",
                "n_tickers": 3,
                "top_tickers": [
                    "BE",
                    "INTC",
                    "UBER"
                ],
                "top_sector": "Industrials",
                "median_filing_delay_days": 25,
                "pct_late": 0,
                "avg_excess_return_buys": -0.05460919040759641,
                "win_rate_buys": 0.6666666666666666
            },
            {
                "window": "YTD",
                "n_trades": 28,
                "n_buys": 20,
                "n_sells": 7,
                "n_exchanges": 1,
                "buy_volume_est": 20100010,
                "sell_volume_est": 42375003.5,
                "net_volume_est": -22274993.5,
                "n_filings": 4,
                "first_trade_date": "2025-12-24",
                "last_trade_date": "2026-09-08",
                "last_filing_date": "2026-10-02",
                "n_tickers": 13,
                "top_tickers": [
                    "BE",
                    "AAPL",
                    "AMZN",
                    "GOOGL",
                    "INTC"
                ],
                "top_sector": "Technology",
                "median_filing_delay_days": 24,
                "pct_late": 0,
                "avg_excess_return_buys": -0.08995653887546648,
                "win_rate_buys": 0.375
            },
            {
                "window": "1Y",
                "n_trades": 28,
                "n_buys": 20,
                "n_sells": 7,
                "n_exchanges": 1,
                "buy_volume_est": 20100010,
                "sell_volume_est": 42375003.5,
                "net_volume_est": -22274993.5,
                "n_filings": 4,
                "first_trade_date": "2025-12-24",
                "last_trade_date": "2026-09-08",
                "last_filing_date": "2026-10-02",
                "n_tickers": 13,
                "top_tickers": [
                    "BE",
                    "AAPL",
                    "AMZN",
                    "GOOGL",
                    "INTC"
                ],
                "top_sector": "Technology",
                "median_filing_delay_days": 24,
                "pct_late": 0,
                "avg_excess_return_buys": -0.08995653887546648,
                "win_rate_buys": 0.375
            },
            {
                "window": "ALL",
                "n_trades": 211,
                "n_buys": 129,
                "n_sells": 80,
                "n_exchanges": 2,
                "buy_volume_est": 116068564.5,
                "sell_volume_est": 110618549.5,
                "net_volume_est": 5450015,
                "n_filings": 64,
                "first_trade_date": "2013-01-26",
                "last_trade_date": "2026-09-08",
                "last_filing_date": "2026-10-02",
                "n_tickers": 44,
                "top_tickers": [
                    "AAPL",
                    "NVDA",
                    "V",
                    "AMZN",
                    "DIS"
                ],
                "top_sector": "Technology",
                "median_filing_delay_days": 25,
                "pct_late": 0.052132701421800945,
                "avg_excess_return_buys": 0.7118809006573528,
                "win_rate_buys": 0.6
            }
        ],
        "holdings": [
            {
                "ticker": "V",
                "issuer_name": "Visa Inc.",
                "sector": "Financial Services",
                "held_shares_est": 46047.58403683807,
                "held_value_est": 19592786.08215079,
                "held_cost_est": 15000000.5,
                "held_return": 0.3061856952705295,
                "held_weight": 0.1345322667637085,
                "held_since": "2026-05-15",
                "price_latest": 425.49,
                "price_latest_date": "2026-11-02"
            },
            {
                "ticker": "CRM",
                "issuer_name": "Salesforce, Inc.",
                "sector": "Technology",
                "held_shares_est": 86450.35430168854,
                "held_value_est": 19552476.47411757,
                "held_cost_est": 15000000.5,
                "held_return": 0.30349838815789165,
                "held_weight": 0.13425548412961408,
                "held_since": "2026-05-15",
                "price_latest": 226.17,
                "price_latest_date": "2026-11-02"
            },
            {
                "ticker": "MSFT",
                "issuer_name": "Microsoft Corp",
                "sector": "Technology",
                "held_shares_est": 35551.76342107595,
                "held_value_est": 18029010.09250344,
                "held_cost_est": 15000000.5,
                "held_return": 0.20193396610243042,
                "held_weight": 0.1237947265427403,
                "held_since": "2026-05-15",
                "price_latest": 507.12,
                "price_latest_date": "2026-11-02"
            },
            {
                "ticker": "AAPL",
                "issuer_name": "Apple Inc.",
                "sector": "Technology",
                "held_shares_est": 49961.69587018091,
                "held_value_est": 16903041.312729996,
                "held_cost_est": 15000000.5,
                "held_return": 0.12686938328635367,
                "held_weight": 0.11606335380111235,
                "held_since": "2026-05-15",
                "price_latest": 338.32,
                "price_latest_date": "2026-11-02"
            },
            {
                "ticker": "AMZN",
                "issuer_name": "Amazon Com Inc",
                "sector": "Consumer Discretionary",
                "held_shares_est": 56788.06567783588,
                "held_value_est": 13948852.849732304,
                "held_cost_est": 15000000.5,
                "held_return": -0.07007650768196283,
                "held_weight": 0.09577865979649902,
                "held_since": "2026-05-15",
                "price_latest": 245.63,
                "price_latest_date": "2026-11-02"
            },
            {
                "ticker": "NVDA",
                "issuer_name": "Nvidia Corp",
                "sector": "Technology",
                "held_shares_est": 66571.98656316442,
                "held_value_est": 13451535.442423739,
                "held_cost_est": 15000000.5,
                "held_return": -0.10323100039738409,
                "held_weight": 0.09236387040280361,
                "held_since": "2026-05-15",
                "price_latest": 202.06,
                "price_latest_date": "2026-11-02"
            },
            {
                "ticker": "AVGO",
                "issuer_name": "Broadcom Inc.",
                "sector": "Technology",
                "held_shares_est": 35278.34712451192,
                "held_value_est": 11367742.181510974,
                "held_cost_est": 15000000.5,
                "held_return": -0.24215054649425016,
                "held_weight": 0.07805567402470279,
                "held_since": "2026-05-15",
                "price_latest": 322.23,
                "price_latest_date": "2026-11-02"
            },
            {
                "ticker": "GOOGL",
                "issuer_name": "Alphabet Inc.",
                "sector": "Technology",
                "held_shares_est": 37804.32619120888,
                "held_value_est": 10547028.594902491,
                "held_cost_est": 15000000.5,
                "held_return": -0.29686478377767445,
                "held_weight": 0.07242031115659088,
                "held_since": "2026-05-15",
                "price_latest": 278.99,
                "price_latest_date": "2026-11-02"
            }
            // … 2 more items in the full API response
        ],
        "top_traded": [
            {
                "ticker": "AAPL",
                "issuer_name": "Apple Inc.",
                "sector": "Technology",
                "asset_class": "Stock",
                "n_trades": 34,
                "n_buys": 17,
                "n_sells": 17,
                "buy_volume_est": 10825008.5,
                "sell_volume_est": 59775008.5,
                "net_volume_est": -48950000,
                "first_trade_date": "2016-01-13",
                "last_trade_date": "2025-12-30",
                "avg_excess_return_buys": 3.1685995337542474
            },
            {
                "ticker": "NVDA",
                "issuer_name": "Nvidia Corp",
                "sector": "Technology",
                "asset_class": "Option",
                "n_trades": 15,
                "n_buys": 11,
                "n_sells": 4,
                "buy_volume_est": 17800005.5,
                "sell_volume_est": 9175002,
                "net_volume_est": 8625003.5,
                "first_trade_date": "2021-06-03",
                "last_trade_date": "2026-01-16",
                "avg_excess_return_buys": 3.3566110886770457
            },
            {
                "ticker": "AMZN",
                "issuer_name": "Amazon Com Inc",
                "sector": "Consumer Discretionary",
                "asset_class": "Option",
                "n_trades": 11,
                "n_buys": 8,
                "n_sells": 3,
                "buy_volume_est": 9550004,
                "sell_volume_est": 3750001.5,
                "net_volume_est": 5800002.5,
                "first_trade_date": "2018-07-27",
                "last_trade_date": "2026-01-16",
                "avg_excess_return_buys": 0.14136532894418496
            },
            {
                "ticker": "MSFT",
                "issuer_name": "Microsoft Corp",
                "sector": "Technology",
                "asset_class": "Stock",
                "n_trades": 9,
                "n_buys": 8,
                "n_sells": 1,
                "buy_volume_est": 8500004,
                "sell_volume_est": 3000000.5,
                "net_volume_est": 5500003.5,
                "first_trade_date": "2020-02-20",
                "last_trade_date": "2024-07-26",
                "avg_excess_return_buys": 0.09938071044305648
            },
            {
                "ticker": "V",
                "issuer_name": "Visa Inc.",
                "sector": "Financial Services",
                "asset_class": "Stock",
                "n_trades": 13,
                "n_buys": 0,
                "n_sells": 13,
                "buy_volume_est": 0,
                "sell_volume_est": 10525006.5,
                "net_volume_est": -10525006.5,
                "first_trade_date": "2014-12-29",
                "last_trade_date": "2024-07-01",
                "avg_excess_return_buys": null
            },
            {
                "ticker": "GOOGL",
                "issuer_name": "Alphabet Inc.",
                "sector": "Technology",
                "asset_class": "Stock",
                "n_trades": 9,
                "n_buys": 5,
                "n_sells": 4,
                "buy_volume_est": 5250002.5,
                "sell_volume_est": 5250002,
                "net_volume_est": 0.5,
                "first_trade_date": "2020-02-27",
                "last_trade_date": "2026-01-16",
                "avg_excess_return_buys": 0.13399806807018794
            },
            {
                "ticker": "DIS",
                "issuer_name": "Walt Disney Co",
                "sector": "Communication Services",
                "asset_class": "Stock",
                "n_trades": 9,
                "n_buys": 6,
                "n_sells": 3,
                "buy_volume_est": 4758003,
                "sell_volume_est": 3750002,
                "net_volume_est": 1008001,
                "first_trade_date": "2014-11-28",
                "last_trade_date": "2025-12-30",
                "avg_excess_return_buys": -1.84685375245419
            },
            {
                "ticker": "BE",
                "issuer_name": "Bloom Energy Corp",
                "sector": "Industrials",
                "asset_class": "Stock",
                "n_trades": 4,
                "n_buys": 4,
                "n_sells": 0,
                "buy_volume_est": 7500002,
                "sell_volume_est": 0,
                "net_volume_est": 7500002,
                "first_trade_date": "2026-07-24",
                "last_trade_date": "2026-07-28",
                "avg_excess_return_buys": 0.1022374011102547
            }
            // … 2 more items in the full API response
        ]
    }
}

Trades211

Bought (est.)$116.07M

Sold (est.)$110.62M

Last Disclosure2026-10-02

Holding	Sector	Shares (est.)	Value (est.)	Cost (est.)	Return	Weight	Held Since
V Visa Inc.	Financial Services	46,048	$19.59M	$15.00M	30.6%	13.5%	2026-05-15
CRM Salesforce, Inc.	Technology	86,450	$19.55M	$15.00M	30.3%	13.4%	2026-05-15
MSFT Microsoft Corp	Technology	35,552	$18.03M	$15.00M	20.2%	12.4%	2026-05-15
AAPL Apple Inc.	Technology	49,962	$16.90M	$15.00M	12.7%	11.6%	2026-05-15
AMZN Amazon Com Inc	Consumer Discretionary	56,788	$13.95M	$15.00M	-7.0%	9.6%	2026-05-15
NVDA Nvidia Corp	Technology	66,572	$13.45M	$15.00M	-10.3%	9.2%	2026-05-15
AVGO Broadcom Inc.	Technology	35,278	$11.37M	$15.00M	-24.2%	7.8%	2026-05-15
GOOGL Alphabet Inc.	Technology	37,804	$10.55M	$15.00M	-29.7%	7.2%	2026-05-15
CRWD CrowdStrike Holdings, Inc.	Technology	20,199	$4.88M	$3.00M	62.8%	3.4%	2026-05-15
PANW Palo Alto Networks Inc	Technology	12,354	$4.35M	$3.00M	44.8%	3.0%	2026-05-15

7. Use Cases

Common ways the politician endpoints are used.

Copy-Trading & Signals

Follow the politicians whose purchases have beaten the market. Rank members with /congress/politicians?sort=return, then poll /congress/trades?member=... for their new disclosures.

Politician Profiles

Build a profile for every member: /congress/politician returns their committees, trading statistics per period, estimated holdings and most-traded stocks.

Journalism & Accountability

Spot trades in stocks overseen by a member's committees, trades disclosed late, and heavy trading ahead of major news, with the trade date, disclosure date and amount on every record.

8. More Congressional Trading Endpoints

The Congressional Trading API is three pages and four endpoints, all on the same API key and the same {metadata, data} envelope.

Congress Trades

/congress/trades

Every disclosed trade with the member, owner, asset, amount, trade and disclosure dates and the return since, filterable by stock, member, party, state, side, owner, asset type and dates.

Politician TradesThis page

/congress/politicians · /congress/politician

Rank members of Congress by volume, trades or the return of their purchases, and pull any member's profile, statistics for every period and estimated portfolio.

Congress Trades by Stock

/congress/ticker

One stock through Congress's eyes: buyers and sellers, the party split, every member who traded it with their position, and monthly buying and selling.

Frequently Asked Questions

What is a politician stock trading API?

It is an API that returns how members of Congress trade stocks as structured data: rankings of politicians by trading volume, number of trades and returns, and each member's statistics and estimated portfolio. The Business Quant Politician Stock Trading API returns them as JSON.

How do I find the politicians with the best stock trading returns?

Call /congress/politicians with sort=return. It ranks members by the average return of their purchases against the S&P 500 over the window you choose; add current_only=true for members serving now. Each record also carries win_rate_buys, the share of purchases that beat the S&P 500.

Can I get a politician's stock portfolio through the API?

Yes. /congress/politician?member=P000197 returns Nancy Pelosi's estimated current holdings with shares, value, cost, return and weight, next to her profile, trading statistics for every period and most-traded stocks. It works with any member's ID or member slug.

Which members of Congress trade the most?

/congress/politicians?window=1Y&sort=trades ranks members by number of trades over the last year, and sort=volume ranks them by estimated dollar volume. Filter by party, state or current_only.

Is the Politician Stock Trading API free?

Yes. Both endpoints are free to use on every plan, including the free plan.

Politician Stock Trading API