SEI Investments Co
SEIC- Exchange
- Nasdaq
- Industry
- Security Brokers, Dealers & Flotation Companies
- SEC CIK
- 0000350894
In the last 90 days, SEI Investments Co insiders filed 0 open-market purchases and 11 sales; 575 institutions reported holding it in 13F filings for Q2 2026, worth $7.94B in total; Markel Group is the only superinvestor holding it.
Q2 2026 vs. Q1 2026
How the institutions holding SEI Investments Co changed between Q1 2026 and Q2 2026.
All holders in Q2 2026All holders in Q1 2026
| Measure | Q1 2026 | Of which not filed for Q2 2026 | Q2 2026 | Change |
|---|---|---|---|---|
| Holders | 569 | 10 | 575 | +16 |
| Shares | 90.0M | 158.9K | 90.5M | +664.6K (+0.7%) |
| Value | $7.06B | $12.5M | $7.94B | +$888.3M (+12.6%) |
10 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so the changes leave them out.
New holders (77)
Institutions that held SEI Investments Co at the end of Q2 2026 but not at the end of Q1 2026.
Sold out (61)
Institutions that held SEI Investments Co at the end of Q1 2026 and filed for Q2 2026 without it.
Not filed for Q2 2026 yet (10)
Institutions that held SEI Investments Co at the end of Q1 2026 and haven't filed a 13F for Q2 2026. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q1 2026 | Value, Q1 2026 |
|---|---|---|
| Mill Creek Capital Advisors, LLC | 51,309 | $4.03M |
| Janus Henderson Group PLC | 45,122 | $3.54M |
| DGS Capital Management, LLC | 29,030 | $2.28M |
| CWM, LLC | 11,498 | $902.2K |
| Gibbs Wealth Management | 10,627 | $833.9K |
| Skopos Labs, Inc. | 7,492 | $587.8K |
| Leo Wealth, LLC | 3,760 | $295.0K |
| Sunbelt Securities, Inc. | 35 | $2.75K |
| Red Tortoise LLC | 33 | $2.59K |
| USA Financial Portformulas Corp | 6 | $471 |