SEIC Sei Investments Co.
Financials, filed as SEI INVTS CO (COM), Equity As of 2026 Q3 among managers we track Quote on Google Finance, opens in a new tab
Who owns this now
Largest portfolio weights among holders, up to 0.1% (Thomas Gayner, Markel Group). Not free-float ownership.
Who owns SEIC
Sorted by value, long equity only, as of 2026 Q3.
| History | |||||
|---|---|---|---|---|---|
| Thomas Gayner, Markel Group | Hold | 173,200 | $18M | History |
Insider trades
Open-market buys and sales by SEIC's executives, directors and 10% owners in the last 12 months, from their Form 4s
- None no insider bought on the open market
- $53.6M sold by 11 insiders outside a trading plan
- None no planned (10b5-1) sales
-
Alfred P West Jr. InsiderSale$3.5M 33,877 shares at $103.36 0.5% of stakeTraded Sep 29–30 Filed Oct 1
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Michael Lane Executive Vice PresidentSale$247K 2,400 shares at $102.78 5.7% of stakeTraded Sep 22 Filed Sep 24
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Ryan Hicke CEOSale$4.2M 37,500 shares at $110.71 16% of stakeTraded Sep 3 Filed Sep 8
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Carmen Romeo DirectorSale$549K 5,000 shares at $109.70 0.3% of stakeTraded Sep 1 Filed Sep 3
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Michael Peterson Executive Vice PresidentSale$4.2M 37,500 shares at $111.51 65% of stakeTraded Aug 28 Filed Sep 1
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Philip McCabe See RemarksSale$3.2M 30,000 shares at $105.12 35% of stakeTraded Aug 4–5 Filed Aug 6
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Kathryn McCarthy DirectorSale$1M 10,000 shares at $103.54 11% of stakeTraded Aug 3 Filed Aug 4
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Mark Andrew Warner See Remarks*Sale$1.5M 15,000 shares at $102.35 94% of stakeTraded Jul 28 Filed Jul 30
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Michael Peterson Executive Vice PresidentSale$2.6M 25,000 shares at $102.05 55% of stakeTraded Jul 28 Filed Jul 30
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Carl Guarino DirectorSale$1M 10,000 shares at $103.20 35% of stakeTraded Jul 28 Filed Jul 30
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Sanjay Sharma See Remarks*Sale$2M 20,000 shares at $99.33 33% of stakeTraded Jul 24 Filed Jul 28
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Alfred P West Jr. InsiderSale$5M 57,332 shares at $87.26 0.8% of stakeTraded Jun 26–29 Filed Jun 29
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William Doran DirectorSale$453K 5,000 shares at $90.50 0.8% of stakeTraded Jun 9 Filed Jun 11
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Kathryn McCarthy DirectorSale$911K 10,000 shares at $91.07 11% of stakeTraded May 4 Filed May 5
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Mark Andrew Warner In RemarksSale$365K 4,000 shares at $91.16 81% of stakeTraded Apr 28 Filed Apr 30
Also filed in the last 12 months, not counted as buying or selling: 36 option exercises, 16 stock grants, 9 share withholdings for taxes, and 1 gift.
SEC filings
Recent issuer filings from EDGAR, 15 shown.
| Filed | Form | Detail | Links |
|---|---|---|---|
| SCHEDULE 13G/A | — | Filing Doc | |
| 10-Q | FORM 10-Q | Filing Doc | |
| 8-K | 2.02,7.01,8.01,9.01 | Filing Doc | |
| SCHEDULE 13G/A | — | Filing Doc | |
| SCHEDULE 13G | — | Filing Doc | |
| 10-Q | FORM 10-Q | Filing Doc | |
| 8-K | 2.02,7.01,9.01 | Filing Doc | |
| 8-K | 5.07,8.01,9.01 | Filing Doc | |
| SCHEDULE 13G/A | — | Filing Doc | |
| SCHEDULE 13G | — | Filing Doc | |
| 10-Q | FORM 10-Q | Filing Doc | |
| 8-K | 2.02,7.01,9.01 | Filing Doc | |
| DEF 14A | DEFINITIVE PROXY STATEMENT | Filing Doc | |
| SCHEDULE 13G/A | — | Filing Doc | |
| 8-K | 7.01,9.01 | Filing Doc |
No filings match this filter.
Financials
US-GAAP annual figures by fiscal year, as tagged in Form 10-K. Each value links to its SEC filing.
Income statement
Balance sheet
Ownership over time
13Fs that reported it each quarter. Click a bar for that quarter’s holders.
Further reading
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- How to Read a Financial Report (Tracy & Tracy) View on Amazon
- Financial Statements QuickStudy Laminated Guide View on Amazon