Citadel Investment Advisory, Inc. reported 67 positions worth $201.49M for the quarter ended Sep 30, 2026, down 1.7% on the prior quarter. It opened 4 new positions, added to 20, trimmed 31 and exited 0. Its largest holding is Berkshire Hathaway Inc at 25.8% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| HHH Howard Hughes Holdings Inc. | +11.7K | – | $831.00K | 0.412% |
| MKL Markel Group Inc. | +167 | +1.1% | $285.98K | 13.1% |
| HGTY Hagerty, Inc. | +16.3K | – | $219.00K | 0.109% |
| SIRI Sirius Xm Holdings Inc. | +7,396 | – | $191.00K | 0.095% |
| MSFT Microsoft Corp | +206 | +1.4% | $105.66K | 3.76% |
| MCO Moodys Corp | +200 | +2.7% | $90.84K | 1.72% |
| PM Philip Morris International Inc. | +425 | +1.1% | $81.10K | 3.74% |
| IDXX Idexx Laboratories Inc | +151 | +4.3% | $78.84K | 0.942% |
| AXP American Express Co | +200 | +3.4% | $60.81K | 0.91% |
| JPM Jpmorgan Chase & Co | +167 | +2.0% | $55.24K | 1.41% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| GOOGL Alphabet Inc. | -710 | -1.5% | $244.30K | 7.85% |
| BRK-B Berkshire Hathaway Inc | -434 | -0.4% | $216.11K | 25.79% |
| AMG Affiliated Managers Group, Inc. | -255 | -4.0% | $93.24K | 1.12% |
| IBM International Business Machines Corp | -350 | -2.1% | $76.97K | 1.8% |
| GOOG Alphabet Inc. | -150 | -0.5% | $51.11K | 4.61% |
| GS Goldman Sachs Group Inc | -53 | -1.3% | $47.72K | 1.81% |
| BKNG Booking Holdings Inc. | -250 | -1.7% | $40.73K | 1.14% |
| DIS Walt Disney Co | -350 | -1.6% | $36.72K | 1.14% |
| BAC Bank Of America Corp | -620 | -3.0% | $33.74K | 0.538% |
| RTX RTX Corp | -170 | -0.6% | $31.56K | 2.56% |
No positions were closed this quarter.
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | BRK-B Berkshire Hathaway Inc | Financial Services | 104.4K | $51.97M | 25.79% | -434 | -0.4% | Reduced | 0.01% |
| 2 | MKL Markel Group Inc. | Financial Services | 15.4K | $26.39M | 13.1% | +167 | +1.1% | Added | 0.12% |
| 3 | GOOGL Alphabet Inc. | Technology | 46.0K | $15.81M | 7.85% | -710 | -1.5% | Reduced | 0% |
| 4 | GOOG Alphabet Inc. | Technology | 27.3K | $9.30M | 4.61% | -150 | -0.5% | Reduced | 0% |
| 5 | MSFT Microsoft Corp | Technology | 14.8K | $7.58M | 3.76% | +206 | +1.4% | Added | 0% |
| 6 | PM Philip Morris International Inc. | Consumer Staples | 39.5K | $7.53M | 3.74% | +425 | +1.1% | Added | 0% |
| 7 | JNJ Johnson & Johnson | Healthcare | 23.0K | $6.09M | 3.02% | -53 | -0.2% | Reduced | 0% |
| 8 | RTX RTX Corp | Industrials | 27.8K | $5.16M | 2.56% | -170 | -0.6% | Reduced | 0% |
| 9 | ABBV AbbVie Inc. | Healthcare | 17.8K | $4.65M | 2.31% | -57 | -0.3% | Reduced | 0% |
| 10 | GS Goldman Sachs Group Inc | Financial Services | 4,047 | $3.64M | 1.81% | -53 | -1.3% | Reduced | 0% |
| 11 | IBM International Business Machines Corp | Technology | 16.5K | $3.63M | 1.8% | -350 | -2.1% | Reduced | 0% |
| 12 | MCO Moodys Corp | Financial Services | 7,627 | $3.46M | 1.72% | +200 | +2.7% | Added | 0% |
| 13 | KO Coca Cola Co | Consumer Staples | 39.0K | $3.36M | 1.67% | +580 | +1.5% | Added | 0% |
| 14 | ORCL Oracle Corp | Technology | 22.4K | $3.08M | 1.53% | +34 | +0.2% | Added | 0% |
| 15 | JPM Jpmorgan Chase & Co | Financial Services | 8,589 | $2.84M | 1.41% | +167 | +2.0% | Added | 0% |
Tip. Select a row to see that position’s full history at Citadel Investment Advisory.
As of its Q3 2026 13F filing, Citadel Investment Advisory, Inc.’s five largest positions were Berkshire Hathaway Inc (BRK-B) at 25.8%, Markel Group Inc. (MKL) at 13.1%, Alphabet Inc. (GOOGL) at 7.8%, Alphabet Inc. (GOOG) at 4.6%, Microsoft Corp (MSFT) at 3.8% of the reported portfolio.
Citadel Investment Advisory, Inc. reported a 13F portfolio worth $201.49M across 67 positions for Q3 2026. That is down 1.7% from the previous quarter.
Its largest purchases by value were Howard Hughes Holdings Inc. ($831.00K), Markel Group Inc. ($285.98K), Hagerty, Inc. ($219.00K). It opened 4 new positions.
Its largest sales by value were Alphabet Inc. ($244.30K), Berkshire Hathaway Inc ($216.11K), Affiliated Managers Group, Inc. ($93.24K). It exited 0 positions entirely.
From the Form 13F-HR reports Citadel Investment Advisory, Inc. files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.