SS&C Technologies Holdings
SSNC · NASDAQ
Who owns SSNC
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 44.4% of SSNC’s shares.
- Stone (William C)13.6%
- Vanguard Portfolio Management, LLC5.1%
- Pzena Investment Management, LLC4.6%
- BlackRock Institutional Trust Company, N.A.4.1%
- Next 6 largest institutions17.0%
- All other shareholders55.6%
| Holder | Shares | % of shares |
|---|---|---|
| Stone (William C) | 32.77M | 13.61% |
| Vanguard Portfolio Management, LLC | 12.17M | 5.05% |
| Pzena Investment Management, LLC | 11.04M | 4.58% |
| BlackRock Institutional Trust Company, N.A. | 9.98M | 4.14% |
| Vanguard Capital Management, LLC | 9.27M | 3.85% |
| Fidelity Management & Research Company LLC | 8.66M | 3.59% |
| State Street Investment Management (US) | 6.26M | 2.60% |
| AQR Capital Management, LLC | 6.07M | 2.52% |
| Citadel Advisors LLC | 5.91M | 2.45% |
| Swedbank Robur Fonder AB | 4.86M | 2.02% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 6.51M | 2.70% |
| Vanguard Windsor Fund | 3.03M | 1.26% |
| Fidelity Strategic Advisers Fidelity US Total Stk | 2.80M | 1.16% |
| Folksam LO Varlden | 2.65M | 1.10% |
| Vanguard Extended Market Index Fund | 2.38M | 0.99% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $583.59K (3 trades) of SSNC on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Schell Brian N | Option exercise | 40.17K | — |
| Schell Brian N | Tax withholding | 17.94K | $1.46M |
| Schell Brian N | Option exercise | 40.17K | — |
| ZAMKOW MICHAEL JAY | Option exercise | 3.00K | — |
| ZAMKOW MICHAEL JAY | Sale | 3.00K | $200.04K |
| ZAMKOW MICHAEL JAY | Option exercise | 3.00K | $91.33K |
| ZAMKOW MICHAEL JAY | Award | 3.20K | — |
| ZAMKOW MICHAEL JAY | Option exercise | 2.58K | — |
| ZAMKOW MICHAEL JAY | Option exercise | 3.00K | — |
| ZAMKOW MICHAEL JAY | Option exercise | 2.58K | — |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Ro KhannaHouse | Sale | $1K–$15K | Oct 29, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 4.65M
- Days to cover
- 2.94
- % of shares outstanding
- 1.93%
- Average daily volume
- 1.58M
- Change since last report
- −1.9%
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