Sei Investments Co holds a diversified book of 3228 stocks worth $108.4B as of Q1 2026 (disclosed May 13, 2026, a ~43-day 13F lag). This quarter they opened Pgim Aaa Clo ETF and trimmed Microsoft Corp. Their largest long position is Nvidia Corp at 3% of the equity book. Cloning the disclosed picks since 2015 would be +210% (+10.3%/yr). That is a simulation of the disclosed long book, not audited returns.
The reported book (valued from quarter-end) returned +215.4%, a 5.6-point gap that is the cost of the ~43-day 13F disclosure lag a real follower can't avoid.
Growth of $10,000 cloning Sei Investments Co's disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~43 days for the latest filing, with no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: diversified book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
79% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Sei Investments Co
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| MORGAN STANLEY | 78 / 80 | $573.2B |
| JPMORGAN CHASE & CO | 78 / 80 | $555.5B |
| ROYAL BANK OF CANADA | 78 / 80 | $156.6B |
| UBS Group AG | 78 / 80 | $151.3B |
| ENVESTNET ASSET MANAGEMENT INC | 78 / 80 | $81.5B |
| LPL Financial LLC | 78 / 80 | $68.8B |
| TRUIST FINANCIAL CORP | 78 / 80 | $20.5B |
| OSAIC HOLDINGS, INC. | 78 / 80 | $15.6B |
Ranked by how many of Sei Investments Co's top 80 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Nvidia Corporation COM | $3.8B | 21.68M | 3.5% | ▲+13% Added · +2.4M sh | |
| 2 | Apple Inc COM | $2.9B | 11.25M | 2.6% | ▲+19% Added · +1.8M sh | |
| 3 | Microsoft Corp COM | $2.6B | 7.00M | 2.4% | ▼−1.6% Reduced · −111K sh | |
| 4 | Amazon Com Inc COM | $2.2B | 10.49M | 2.0% | ▲+10% Added · +975K sh | |
| 5 | Alphabet Inc CAP STK CL C | $1.7B | 5.86M | 1.6% | ▲+29% Added · +1.3M sh | |
| 6 | Vanguard Tax-Managed FDS VAN FTSE DEV MKT | $1.6B | 24.73M | 1.5% | ▼−3.6% Reduced · −937K sh | |
| 7 | Broadcom Inc COM | $1.6B | 5.08M | 1.4% | ▲+23% Added · +962K sh | |
| 8 | Schwab Strategic TR US LCAP GR ETF | $1.4B | 47.56M | 1.3% | ▲+7.6% Added · +3.4M sh | |
| 9 | Vanguard BD Index FDS TOTAL BND MRKT | $1.4B | 18.63M | 1.3% | ▲+4.3% Added · +773K sh | |
| 10 | Schwab Strategic TR US LCAP VA ETF | $1.4B | 44.77M | 1.3% | ▼−2.2% Reduced · −1.0M sh | |
| 11 | Alphabet Inc CAP STK CL A | $1.2B | 4.17M | 1.1% | ▲+8.7% Added · +333K sh | |
| 12 | Meta Platforms Inc CL A | $1.1B | 1.97M | 1.0% | ▲+15% Added · +261K sh | |
| 13 | Ishares TR CORE MSCI INTL | $1.0B | 12.44M | 1.0% | ▲+2.4% Added · +293K sh | |
| 14 | Taiwan Semiconductor Manufac SPONSORED ADS | $875.8M | 2.59M | 0.8% | ▲+12% Added · +274K sh | |
| 15 | Schwab Strategic TR US LRG CAP ETF | $834.0M | 32.53M | 0.8% | ▲+5.0% Added · +1.6M sh | |
| 16 | Vanguard Index FDS VALUE ETF | $753.1M | 3.84M | 0.7% | ▲+1.9% Added · +73K sh | |
| 17 | Vanguard Mun BD FDS TAX EXEMPT BD | $706.7M | 14.16M | 0.7% | ▲+4.9% Added · +659K sh | |
| 18 | Eli Lilly & Co COM | $705.8M | 767.3K | 0.7% | ▲+19% Added · +123K sh | |
| 19 | Nushares ETF TR NUVEEN INTERNATI | $646.9M | 26.09M | 0.6% | ▲+58% Added · +9.6M sh | |
| 20 | Vanguard Index FDS GROWTH ETF | $643.0M | 1.47M | 0.6% | ▲+1.1% Added · +16K sh | |
| 21 | Ishares Inc CORE MSCI EMKT | $633.0M | 9.07M | 0.6% | ▼−4.3% Reduced · −405K sh | |
| 22 | Mastercard Incorporated CL A | $621.4M | 1.24M | 0.6% | ▲+5.0% Added · +59K sh | |
| 23 | Sei Exchange Traded Funds ENHANCED US LRG | $620.9M | 14.94M | 0.6% | ▲+1.2% Added · +184K sh | |
| 24 | Sei Exchange Traded Funds ENHANCED US LRG | $613.5M | 13.47M | 0.6% | ▲+2.5% Added · +330K sh | |
| 25 | Vanguard Intl Equity Index F FTSE EMR MKT ETF | $610.6M | 11.30M | 0.6% | ▲+0.9% Added · +99K sh | |
| 26 | Vanguard Charlotte FDS TOTAL INT BD ETF | $588.6M | 12.25M | 0.5% | ▲+6.3% Added · +721K sh | |
| 27 | Ishares TR NATIONAL MUN ETF | $559.9M | 5.27M | 0.5% | ▲+0.1% Added · +6K sh | |
| 28 | Visa Inc COM CL A | $558.2M | 1.85M | 0.5% | ▼−0.2% Reduced · −3K sh | |
| 29 | Tesla Inc COM | $557.5M | 1.50M | 0.5% | ▲+17% Added · +218K sh | |
| 30 | Welltower Inc COM | $525.6M | 2.66M | 0.5% | ▲+10% Added · +248K sh | |
| 31 | Netflix Inc. COM | $502.5M | 5.23M | 0.5% | ▲+9.9% Added · +470K sh | |
| 32 | Johnson & Johnson COM | $479.5M | 1.96M | 0.4% | ▲+16% Added · +277K sh | |
| 33 | SPDR Series Trust STATE STREET SPD | $462.5M | 19.83M | 0.4% | ▲+5.7% Added · +1.1M sh | |
| 34 | Schwab Strategic TR US SML CAP ETF | $428.5M | 14.73M | 0.4% | ▼−0.2% Reduced · −24K sh | |
| 35 | Schwab Strategic TR SHT TM US TRES | $406.3M | 16.74M | 0.4% | ▼−10.0% Reduced · −1.9M sh | |
| 36 | Ge Aerospace COM NEW | $382.9M | 1.35M | 0.4% | ▲+36% Added · +357K sh | |
| 37 | JPMorgan Chase & Co COM | $382.0M | 1.30M | 0.4% | ▲+35% Added · +339K sh | |
| 38 | Ge Vernova Inc COM | $380.5M | 435.9K | 0.4% | ▼−16% Reduced · −84K sh | |
| 39 | ASML Hldg NV N Y REGISTRY SHS | $379.4M | 287.2K | 0.3% | ▲+224% Added · +199K sh | |
| 40 | Spotify Technology S A SHS | $363.4M | 749.5K | 0.3% | ▲+1.8% Added · +13K sh | |
| 41 | Advanced Micro Devices Inc COM | $354.9M | 1.74M | 0.3% | ▲+34% Added · +442K sh | |
| 42 | Booking Holdings Inc COM | $352.0M | 83.6K | 0.3% | ▲+97% Added · +41K sh | |
| 43 | Schwab Strategic TR US TIPS ETF | $344.7M | 12.96M | 0.3% | ▲+5.3% Added · +646K sh | |
| 44 | Exxon Mobil Corp COM | $335.2M | 1.98M | 0.3% | ▲+32% Added · +479K sh | |
| 45 | Woodward Inc COM | $323.7M | 904.4K | 0.3% | ▲+12% Added · +100K sh | |
| 46 | Vanguard Index FDS SM CP VAL ETF | $323.0M | 1.49M | 0.3% | ▼−0.4% Reduced · −6K sh | |
| 47 | Shopify Inc CL A SUB VTG SHS | $320.8M | 2.70M | 0.3% | ▲+7.5% Added · +190K sh | |
| 48 | Ishares TR CORE MSCI EAFE | $320.6M | 3.54M | 0.3% | ▼−3.0% Reduced · −108K sh | |
| 49 | Ishares Inc MSCI GBL MIN VOL | $317.5M | 2.66M | 0.3% | ▲+2.1% Added · +55K sh | |
| 50 | Pgim ETF TR AAA CLO ETF | $311.6M | 6.09M | 0.3% | ▲New New position |
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/350894/holdings"
Use Arkolith to show SEI INVESTMENTS CO's latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 13, 2026 | 6,108 | $108.4B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 13, 2026 | 6,077 | $101.3B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 13, 2025 | 5,633 | $93.0B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 14, 2025 | 5,589 | $86.3B | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 14, 2025 | 5,482 | $77.7B | 13F-HR/A |
| Q4 2024 | Dec 31, 2024 | Feb 11, 2025 | 5,393 | $77.9B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 12, 2024 | 5,342 | $77.0B | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 13, 2024 | 5,281 | $70.6B | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 7, 2024 | 5,159 | $68.2B | 13F-HR |
| Q4 2023 | Dec 31, 2023 | Feb 14, 2024 | 5,127 | $62.3B | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 14, 2023 | 5,162 | $55.7B | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 11, 2023 | 5,215 | $57.3B | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 12, 2023 | 5,320 | $53.8B | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 10, 2023 | 4,917 | $45.0B | 13F-HR |
| Q3 2022 | Sep 30, 2022 | Nov 14, 2022 | 5,099 | $44.8B | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 15, 2022 | 5,003 | $46.3B | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 13, 2022 | 4,826 | $49.8B | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Feb 14, 2022 | 4,846 | $53.3B | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Nov 12, 2021 | 4,698 | $47.7B | 13F-HR |
| Q2 2021 | Jun 30, 2021 | Aug 6, 2021 | 4,567 | $45.1B | 13F-HR |
| Q1 2021 | Mar 31, 2021 | May 12, 2021 | 4,391 | $39.7B | 13F-HR |
| Q4 2020 | Dec 31, 2020 | Feb 8, 2021 | 4,396 | $38.7B | 13F-HR |
| Q3 2020 | Sep 30, 2020 | Dec 4, 2020 | 4,513 | $34.5B | 13F-HR/A |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.