Companies / Sei Investments Co
Sei Investments Co
Nasdaq: SEICCIK 350894OAKS, PA
Insider flow · last 90 daysNet sells $5.46M
Financials · FY2025
Ownership
120.0M shares outstanding · as of Jul 10, 2026
Ownership
| Insiders | 0.79% | 951,607 |
| 10%+ / strategic | 7.34% | 8,808,845 |
| Institutions | 68.57% | 82,299,387 |
| Public float | 23.30% | 27,959,343 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 6
View all →| Insider | % of shares | Shares |
|---|---|---|
| 5.68% | 6,818,451 | |
Doran WilliamDirector | 0.52% | 618,802 |
Hicke RyanCEOCHIEF EXECUTIVE OFFICER · Director | 0.16% | 197,164 |
McCarthy KathrynDirector | 0.06% | 77,883 |
Denham SeanExecutive VP, CFO, COO | 0.05% | 57,758 |
| <0.01% | 921 |
Institutional holders 573
View all →| Holder | Value | % of shares |
|---|---|---|
| $908.07M | 9.22% | |
| $870.74M | 8.27% | |
| $717.23M | 7.29% | |
| $416.27M | 4.23% | |
| $372.91M | 3.54% | |
| $239.69M | 2.43% | |
| $222.13M | 2.36% | |
| $152.00M | 1.54% | |
| $143.02M | 1.52% | |
| $142.09M | 1.44% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Boston Partners 13F manager | New | Common stock | $138.89M | +1.8M | 1,770,039 1.47% of shares | high |
| Q1 2026 as of | Norges Bank 13F manager | Exit | Common stock | $-53.55M | -653K -100.00% | 0 | high |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common stock | $25.41M | +290K +3.01% | 9,927,545 8.27% of shares | medium |
| Q1 2026 as of | Millennium Management LLC 13F manager | Trim | Common stock | $-19.84M | -253K -68.04% | 118,765 0.10% of shares | medium |
| Q1 2026 as of | Balyasny Asset Management L.P. 13F manager | New | Common stock | $17.71M | +226K | 225,674 0.19% of shares | medium |
| Q4 2025 as of | Danske Bank A/S 13F manager | Trim | Common stock | $-17.24M | -210K -91.04% | 20,685 0.02% of shares | medium |
| Q4 2025 as of | Bank of America Corp /De 13F manager | Trim | Common stock | $-16.30M | -199K -6.37% | 2,922,323 2.43% of shares | medium |
| Q1 2026 as of | Royal Bank of Canada 13F manager | Trim | Common stock | $-15.26M | -195K -31.83% | 416,650 0.35% of shares | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Vanguard Group Inc | Passive13G/A | — |
| Loomis, Sayles & Co., L.P. | Passive13G/A | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| SEIC | — | 784117103 |