SS&C Technologies Holdings Inc
SSNC- Exchange
- Nasdaq
- Industry
- Services-Prepackaged Software
- SEC CIK
- 0001402436
No open-market purchases or sales by SS&C Technologies Holdings Inc insiders were filed in the last 90 days; 727 institutions reported holding it in 13F filings for Q2 2026, worth $12.6B in total; no superinvestor holds it.
Holders of 5% or more of SSNC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of SS&C Technologies Holdings Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Stone William C | 13G/A | 14.30%35.2M shares | +0.40 ppfrom 13.90% | Feb 10, 20252 filings | Feb 9, 2026 | SEC |
| BlackRock Portfolio Management LLC | 13G | 6.90%17.1M shares | New | Apr 15, 20251 filing | Apr 15, 2025 | SEC |
| Janus Henderson Group PLC | 13G/A | 5.70%14.0M shares | −1.10 ppfrom 6.80% | Feb 14, 20255 filings | Feb 17, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
12 Schedule 13D and 13G filings on SS&C Technologies Holdings Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 20261:20 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 17, 20264:34 PM ET | Janus Henderson Group PLC | 13G/A | 5.70%14.0M shares | −1.10 ppfrom 6.80% | Dec 31, 2025 | SEC |
| Feb 9, 20264:53 PM ET | Stone William C | 13G/A | 14.30%35.2M shares | +0.40 ppfrom 13.90% | Dec 31, 2025 | SEC |
| Nov 14, 202512:36 PM ET | Janus Henderson Group PLC | 13G/A | 6.80%16.5M shares | +0.10 ppfrom 6.70% | Sep 30, 2025 | SEC |
| Aug 14, 202511:34 AM ET | Janus Henderson Group PLC | 13G/A | 6.70%16.5M shares | +0.10 ppfrom 6.60% | Jun 30, 2025 | SEC |
| May 14, 202512:26 PM ET | Janus Henderson Group PLC | 13G/A | 6.60%23.7M shares | −0.10 ppfrom 6.70% | Mar 31, 2025 | SEC |
| Apr 15, 20251:35 PM ET | BlackRock Portfolio Management LLC | 13G | 6.90%17.1M shares | New | Mar 31, 2025 | SEC |
| Feb 14, 202512:24 PM ET | Janus Henderson Group PLC | 13G/A | 6.70%16.6M shares | – | Dec 31, 2024 | SEC |
| Feb 10, 20256:00 PM ET | Stone William C | 13G/A | 13.90%34.8M shares | – | Dec 31, 2024 | SEC |
| Feb 7, 20251:29 PM ET | BlackRock, Inc. | 13G/A | 4.60%11.5M shares | −7.40 ppfrom 12.00%Below 5% | Jan 31, 2025 | SEC |
| Feb 3, 20254:04 PM ET | BlackRock, Inc. | 13G/A | 12.00%29.6M shares | – | Dec 31, 2024 | SEC |
| Jan 30, 202512:08 PM ET | Pzena Investment Management LLC | 13G | 4.70%11.7M shares | NewBelow 5% | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell SS&C Technologies Holdings Inc shares.
No Form 144 notices for SS&C Technologies Holdings Inc are on file.