Financials · owned by 1 fund manager
Who owns Sei Investments (SEIC)?
1 of the 22 fund managers we track hold Sei Investments, worth $15M combined as of Q2 2026. Thomas Gayner has the biggest bet at 0.1% of the portfolio.
Ownership summary
Fund manager owners
1 / 22
0 opened new positions
Combined value
$15M
At quarter-end prices
Biggest weight
0.1%
Thomas Gayner
Buyers / sellers
0 / 0
Changes in Q2 2026
Smart money take
Why it matters
When several investors with very different styles own the same company, it’s often worth a closer look. Sei Investments appears in 1 of our 22 portfolios.
- Largest holder: Thomas Gayner (0.1% of portfolio)
- 0 managers bought or added this quarter
- 0 managers trimmed or sold out
- Company insiders in Q3 2026: no open-market buys, sold $20M
This is not a recommendation. Do your own research.
Fund managers who own SEIC
SEC 13F · Q2 2026| Investor | % of portfolio | Activity | Shares | Value |
|---|---|---|---|---|
| Thomas Gayner Markel Group | 0.12% | Hold | 173,200 | $15M |
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