Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
694 institutional managers reported holding SSNC for the quarter ended Mar 31, 2026. Together they hold about 80% of shares outstanding; the top 10 hold 39%. 94 opened new positions; 141 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 22.13M | 8.94% | $1.50B | added +7.7% | ≤2013 |
| BlackRock | 20.20M | 8.16% | $1.36B | trimmed -27.7% | ≤2013 |
| FMR (Fidelity) | 11.02M | 4.45% | $744.7M | added +42.2% | ≤2013 |
| Pzena Investment Management | 9.70M | 3.92% | $655.4M | trimmed -6% | 2021 Q2 |
| Janus Henderson | 8.43M | 3.40% | $569.3M | trimmed -39.9% | ≤2013 |
| State Street | 6.25M | 2.53% | $422.6M | added +3.1% | ≤2013 |
| Citadel Advisors | 5.58M | 2.25% | $376.7M | added +646.2% | 2014 Q4 |
| Bank OF Montreal /CAN/ | 5.01M | 2.02% | $338.2M | trimmed -2.4% | ≤2013 |
| Swedbank Robur | 4.31M | 1.74% | $291.1M | added +15% | 2021 Q1 |
| Geode Capital | 4.00M | 1.62% | $270.4M | added +7.2% | ≤2013 |
| Cantillon Capital Management LLC (focused) | 3.75M | 1.52% | $253.6M | trimmed -11.9% | 2016 Q3 |
| T. Rowe Price | 3.39M | 1.37% | $228.8M | added +8% | ≤2013 |
| Dimensional Fund Advisors | 3.12M | 1.26% | $210.5M | added +2% | ≤2013 |
| AQR Capital | 2.84M | 1.15% | $191.8M | added +29.2% | ≤2013 |
| Lyrical Asset Management LP (focused) | 2.32M | 0.94% | $156.6M | trimmed -8.2% | 2025 Q4 |
| Snyder Capital Management L P | 2.27M | 0.92% | $153.6M | added +15.8% | 2022 Q4 |
| Qube Research & Technologies LTD | 2.23M | 0.90% | $150.8M | added +50.2% | 2020 Q2 |
| Robeco Institutional Asset Management B.v. | 2.02M | 0.82% | $136.6M | unchanged | 2017 Q2 |
| Diamond Hill Capital Management INC | 2.02M | 0.82% | $136.5M | trimmed -36% | 2021 Q4 |
| KBC Group NV | 1.91M | 0.77% | $129.0M | added +53.9% | 2017 Q2 |
| Amundi | 1.82M | 0.73% | $122.7M | added +51.8% | 2017 Q2 |
| UBS | 1.78M | 0.72% | $120.3M | trimmed -4.2% | ≤2013 |
| Alkeon Capital Management LLC | 1.76M | 0.71% | $119.3M | unchanged | 2015 Q3 |
| Boston Partners | 1.72M | 0.70% | $116.4M | trimmed -59.8% | 2020 Q2 |
| Bank OF America CORP /DE/ | 1.67M | 0.68% | $112.9M | trimmed -44.1% | ≤2013 |
| Goldman Sachs | 1.61M | 0.65% | $108.8M | trimmed -29% | ≤2013 |
| Jane Street | 1.60M | 0.65% | $108.4M | added +1263.1% | 2017 Q4 |
| Fort Washington Investment Advisors INC /OH/ | 1.51M | 0.61% | $102.2M | trimmed -11.4% | 2019 Q2 |
| Northern Trust | 1.37M | 0.56% | $92.8M | added +5.1% | ≤2013 |
| Morgan Stanley | 1.29M | 0.52% | $87.2M | added +18.9% | ≤2013 |
| Progeny 3, INC. (focused) | 1.26M | 0.51% | $85.1M | added +11.9% | 2023 Q4 |
| Legal & General Group PLC | 1.22M | 0.49% | $82.7M | added +1.6% | 2014 Q3 |
| Brandes Investment Partners, LP | 1.21M | 0.49% | $81.5M | added +14.5% | 2023 Q2 |
| Turtle Creek Asset Management INC. (focused) | 1.16M | 0.47% | $78.1M | added +43% | 2016 Q2 |
| Deutsche Bank AG\ | 1.02M | 0.41% | $69.2M | added +84% | 2013 Q3 |
| Junto Capital Management LP | 1.02M | 0.41% | $69.0M | added +15.5% | 2025 Q3 |
| Millennium Management | 1.02M | 0.41% | $68.6M | added +252.9% | 2018 Q4 |
| Lakewood Capital Management, LP | 947.0k | 0.38% | $64.0M | added +15.6% | 2024 Q2 |
| D. E. Shaw | 941.6k | 0.38% | $63.6M | opened | 2025 Q3 |
| Thompson Siegel & Walmsley LLC | 939.3k | 0.38% | $63.5M | added +133.7% | 2024 Q3 |
| Charles Schwab Investment Management | 931.2k | 0.38% | $62.9M | added +7% | ≤2013 |
| First Trust Advisors LP | 907.4k | 0.37% | $61.3M | added +25.5% | 2015 Q3 |
| Wedge Capital Management L L P/NC | 826.8k | 0.33% | $55.9M | added +7.5% | 2022 Q2 |
| Sunriver Management LLC (focused) | 797.8k | 0.32% | $53.9M | added +26.5% | 2019 Q3 |
| BNP Paribas Financial Markets | 794.3k | 0.32% | $53.7M | added +73% | 2016 Q3 |
| Russell Investments Group, LTD. | 764.9k | 0.31% | $51.7M | unchanged | 2016 Q4 |
| Invesco | 744.9k | 0.30% | $50.3M | added +32.1% | ≤2013 |
| Squarepoint Ops LLC | 733.9k | 0.30% | $49.6M | added +55.8% | 2025 Q3 |
| GMT Capital CORP | 705.5k | 0.28% | $47.7M | unchanged | 2020 Q2 |
| Victory Capital Management INC | 700.6k | 0.28% | $47.3M | trimmed -21.9% | 2014 Q4 |
Largest 50 of 694 shown; the full ranked, searchable register is at boothcheck.com/holders/SSNC. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.