Institutional Ownership
Sera Prognostics Inc
CUSIP 81749D107CLASS A COMSERAQ1 2026
13D / 13G Filings
25
Schedule 13D/13G on record
Beneficial Filers
14
Distinct reporting persons
Largest Stake
17.9%
Max % of class reported
Institutional Holders
53
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
25 filings · latest Jan 16, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 16, 2026 | Whetstone Capital Advisors, LLC | 13G/A | 9.2% | 3.46M | SEC |
| 2 | Sep 8, 2025 | Whetstone Capital Advisors, LLC | 13G | 9.9% | 3.63M | SEC |
| 3 | Aug 14, 2025 | Ra Capital Management, L.P. | 13G/A | — | 913.30M | SEC |
| 4 | Aug 5, 2025 | Aberdeen Group PLC | 13G | 6.1% | 2.23M | SEC |
| 5 | May 15, 2025 | Vivo Capital Ix, LLC | 13G/A | 4.5% | 1.65M | SEC |
| 6 | Feb 14, 2025 | Chione Ltd. | 13D/A | 7.6% | — | SEC |
| 7 | Feb 14, 2025 | Baker Bros. Advisors LP | 13D | 16.1% | — | SEC |
| 8 | Nov 14, 2024 | Ra Capital Management, L.P. | 13G/A | 9.4% | 3.03M | SEC |
| 9 | Nov 4, 2024 | Schindel Yair Chaim | 13G/A | 5.7% | 1.91M | SEC |
| 10 | Apr 1, 2024 | Ra Capital Management, L.P. | 13G | 6.5% | 2.05M | SEC |
15 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Sera Prognostics Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Baker Bros. Advisors LP | 5.50M | $11.16M |
| 2 | Whetstone Capital Advisors, LLC | 3.31M | $6.71M |
| 3 | Aberdeen Group PLC | 2.55M | $5.18M |
| 4 | Psp Research LLC | 2.40M | $4.87M |
| 5 | Vivo Capital, LLC | 1.65M | $3.35M |
| 6 | Captrust Financial Advisors | 536.8K | $1.09M |
| 7 | Geode Capital Management, LLC | 363.6K | $738.5K |
| 8 | Sanders Morris Harris LLC | 314.9K | $639.3K |
| 9 | Citadel Advisors LLC | 248.9K | $505.3K |
| 10 | Awm Investment Company, Inc. | 207.4K | $421.0K |