Sei Investments Co reported 2,892 positions worth $87.30B for the quarter ended Jun 30, 2026, up 2.9% on the prior quarter. It opened 188 new positions, added to 840, trimmed 1,776 and exited 116. Its largest holding is Nvidia Corp at 4.7% 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 | Trade Value | Weight |
|---|---|---|---|
| LITE Lumentum Holdings Inc. | +197.5K +427.5% | $169.45M | 0.24% |
| ANET Arista Networks, Inc. | +983.8K +159.0% | $167.13M | 0.312% |
| SPCX Space Exploration Technologies Corp | +965.7K | $165.00M | 0.189% |
| NVDA Nvidia Corp | +883.4K +4.1% | $159.49M | 4.67% |
| AFRM Affirm Holdings, Inc. | +1.48M +672.4% | $121.08M | 0.159% |
| MSCI MSCI Inc. | +207.8K +172.1% | $116.35M | 0.211% |
| ECL Ecolab Inc. | +357.9K +101.6% | $99.72M | 0.227% |
| SARO StandardAero, Inc. | +3.00M +208.1% | $89.61M | 0.152% |
| CAT Caterpillar Inc | +81.7K +39.0% | $86.99M | 0.355% |
| AXON Axon Enterprise, Inc. | +152.6K +132.8% | $85.54M | 0.172% |
| Holding | Change | Trade Value | Weight |
|---|---|---|---|
| AAPL Apple Inc. | -2.80M -24.9% | $811.11M | 2.8% |
| MSFT Microsoft Corp | -1.09M -15.5% | $405.76M | 2.53% |
| AMD Advanced Micro Devices Inc | -464.0K -26.6% | $269.51M | 0.852% |
| SNOW Snowflake Inc. | -984.7K -74.3% | $250.59M | 0.099% |
| AMZN Amazon Com Inc | -1.05M -10.0% | $233.01M | 2.41% |
| AVGO Broadcom Inc. | -612.9K -12.1% | $231.53M | 1.93% |
| TSM Taiwan Semiconductor Manufacturing Co Ltd | -466.9K -18.0% | $222.97M | 1.16% |
| BKNG Booking Holdings Inc. | -1.19M -57.2% | $212.95M | 0.183% |
| NFLX Netflix Inc | -2.92M -55.9% | $208.53M | 0.189% |
| FLEX Flex Ltd. | -1.09M -49.0% | $177.23M | 0.211% |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| SPCX Space Exploration Technologies Corp | +965.7K | $165.00M | 0.189% |
| HONA Honeywell Aerospace Inc. | +132.2K | $29.23M | 0.033% |
| BXDC Blackstone Digital Infrastructure Trust Inc. | +927.0K | $20.05M | 0.023% |
| BAND Bandwidth Inc. | +227.3K | $14.39M | 0.016% |
| FDXF FedEx Freight Holding Company, Inc. | +55.5K | $8.38M | <0.01% |
| NUAI New ERA Energy & Digital, Inc. | +1.19M | $7.59M | <0.01% |
| PLPC Preformed Line Products Co | +18.1K | $7.44M | <0.01% |
| TFII TFI International Inc. | +49.8K | $7.14M | <0.01% |
| NHP National Healthcare Properties, Inc. | +212.9K | $3.12M | <0.01% |
| LTM Latam Airlines Group S.A. | +52.0K | $3.03M | <0.01% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| INTR Inter & Co, Inc. | -4.56M | $36.31M | 0.043% |
| MRX Marex Group Ltd | -354.3K | $15.80M | 0.019% |
| BY Byline Bancorp, Inc. | -129.6K | $4.09M | <0.01% |
| HOV Hovnanian Enterprises Inc | -35.3K | $3.91M | <0.01% |
| PSIX Power Solutions International, Inc. | -57.5K | $3.50M | <0.01% |
| KRUS Kura Sushi Usa, Inc. | -44.2K | $3.08M | <0.01% |
| CSR Centerspace | -46.1K | $2.65M | <0.01% |
| WHR Whirlpool Corp | -41.5K | $2.24M | <0.01% |
| CWH Camping World Holdings, Inc. | -208.8K | $1.43M | <0.01% |
| STRT Strattec Security Corp | -17.7K | $1.39M | <0.01% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | NVDA Nvidia Corp | Technology | 22.57M | $4.07B | 4.67% | +883.4K | +4.1% | Added | 0.09% |
| 2 | AAPL Apple Inc. | Technology | 8.45M | $2.44B | 2.8% | -2.80M | -24.9% | Reduced | 0.06% |
| 3 | MSFT Microsoft Corp | Technology | 5.91M | $2.21B | 2.53% | -1.09M | -15.5% | Reduced | 0.08% |
| 4 | AMZN Amazon Com Inc | Consumer Discretionary | 9.45M | $2.10B | 2.41% | -1.05M | -10.0% | Reduced | 0.09% |
| 5 | GOOG Alphabet Inc. | Technology | 5.71M | $2.02B | 2.31% | -147.0K | -2.5% | Reduced | 0.1% |
| 6 | AVGO Broadcom Inc. | Technology | 4.46M | $1.69B | 1.93% | -612.9K | -12.1% | Reduced | 0.09% |
| 7 | GOOGL Alphabet Inc. | Technology | 3.97M | $1.42B | 1.63% | -197.5K | -4.7% | Reduced | 0.07% |
| 8 | META Meta Platforms, Inc. | Technology | 1.81M | $1.02B | 1.17% | -161.9K | -8.2% | Reduced | 0.08% |
| 9 | TSM Taiwan Semiconductor Manufacturing Co Ltd | Technology | 2.12M | $1.01B | 1.16% | -466.9K | -18.0% | Reduced | 0.04% |
| 10 | MU Micron Technology Inc | Technology | 859.0K | $991.53M | 1.14% | +56.9K | +7.1% | Added | 0.08% |
| 11 | LLY ELI LILLY & Co | Healthcare | 689.9K | $827.44M | 0.948% | -77.5K | -10.1% | Reduced | 0.07% |
| 12 | AMD Advanced Micro Devices Inc | Technology | 1.28M | $743.88M | 0.852% | -464.0K | -26.6% | Reduced | 0.08% |
| 13 | V Visa Inc. | Financial Services | 1.91M | $654.66M | 0.75% | +61.2K | +3.3% | Added | 0.11% |
| 14 | WELL Welltower Inc. | Real Estate | 2.57M | $583.70M | 0.669% | -86.8K | -3.3% | Reduced | 0.36% |
| 15 | TSLA Tesla, Inc. | Consumer Discretionary | 1.34M | $561.90M | 0.644% | -163.7K | -10.9% | Reduced | 0.03% |
Tip. Select a row to see that position’s full history at Sei Investments.
As of its Q2 2026 13F filing, Sei Investments Co’s five largest positions were Nvidia Corp (NVDA) at 4.7%, Apple Inc. (AAPL) at 2.8%, Microsoft Corp (MSFT) at 2.5%, Amazon Com Inc (AMZN) at 2.4%, Alphabet Inc. (GOOG) at 2.3% of the reported portfolio.
Sei Investments Co reported a 13F portfolio worth $87.30B across 2,892 positions for Q2 2026. That is up 2.9% from the previous quarter.
Its largest purchases by value were Lumentum Holdings Inc. ($169.45M), Arista Networks, Inc. ($167.13M), Space Exploration Technologies Corp ($165.00M). It opened 188 new positions.
Its largest sales by value were Apple Inc. ($811.11M), Microsoft Corp ($405.76M), Advanced Micro Devices Inc ($269.51M). It exited 116 positions entirely.
From the Form 13F-HR reports Sei Investments Co 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.