Sera Prognostics Inc. Class ASERA
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 57 institutions reported holding Sera Prognostics Inc. Class A (SERA) in their 13F filings, down 5 from Q3 2025. 5 opened new positions and 8 sold out. The largest holders were Baker Bros. Advisors LP ($16.2M), Whetstone Capital Advisors, LLC ($10.2M) and Aberdeen Group plc ($6.7M). 3 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Sera Prognostics Inc. Class A
- CUSIP
- 81749D107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 5 | $345K |
| Exits | 8 | $1.5M |
All 13F filers, Q3 2025 → Q4 2025: 340,083 shares bought and 843,592 shares sold, net −503,509 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 57 holders
| Baker Bros. Advisors LP | 0.10% | No change | 5,498,170 | $16.2M |
| Whetstone Capital Advisors, LLC | 3.18% | Reduce -4.8% | 3,459,713 | $10.2M |
| Aberdeen Group plc | 0.01% | No change | 2,279,699 | $6.7M |
| Vivo Capital, LLC | 0.31% | No change | 1,650,440 | $4.9M |
| Vanguard Group Inc. | 0.00% | Add +1.8% | 1,239,449 | $3.7M |
| Citadel Advisors | 0.00% | Add +8.2% | 707,614 | $2.1M |
| Captrust Financial Advisors | 0.00% | Reduce -10.9% | 536,766 | $1.6M |
| Geode Capital Management, LLC | 0.00% | Add +1.1% | 334,639 | $987K |
| AWM Investment Company, Inc. | 0.06% | No change | 207,382 | $612K |
| BlackRock, Inc. | 0.00% | Add +4.3% | 186,751 | $551K |
| State Street Corp. | 0.00% | No change | 124,792 | $368K |
| Millennium Management | 0.00% | Reduce -11.1% | 113,178 | $334K |
| Gsa Capital Partners LLP | 0.03% | Add +64.5% | 107,235 | $316K |
| Corient Private Wealth LP | 0.00% | No change | 100,000 | $290K |
| Northern Trust Corp. | 0.00% | Add +9.1% | 96,535 | $285K |
| Morgan Stanley | 0.00% | Reduce -3.6% | 80,968 | $239K |
| Bank of New York Mellon Corp | 0.00% | No change | 75,267 | $222K |
| Perigon Wealth Management, LLC | 0.00% | No change | 72,685 | $214K |
| Susquehanna International Group, LLP | 0.00% | Add +219.7% | 71,532 | $211K |
| Jane Street Group, LLC | 0.00% | New | 68,826 | $203K |
| Requisite Capital Management, LLC | 0.03% | No change | 55,648 | $164K |
| Twelve Points Wealth Management LLC | 0.04% | No change | 43,388 | $160K |
| Ballentine Partners, LLC | 0.00% | No change | 49,664 | $147K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 45,705 | $135K |
| HighTower Advisors, LLC | 0.00% | No change | 42,234 | $125K |
| Barclays PLC | 0.00% | Add +267.4% | 36,722 | $108K |
| Squarepoint Ops LLC | 0.00% | Reduce -61.0% | 36,322 | $107K |
| Qube Research & Technologies Ltd | 0.00% | Add +20.3% | 28,982 | $85K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -47.9% | 28,599 | $84K |
| Birch Hill Investment Advisors LLC | 0.00% | No change | 27,293 | $81K |
| UBS Group AG | 0.00% | Add +2.7% | 25,195 | $74K |
| Cetera Investment Advisers | 0.00% | New | 25,000 | $74K |
| Dimensional Fund Advisors LP | 0.00% | Add +2.3% | 22,934 | $67K |
| Two Sigma Investments, LP | 0.00% | Reduce -30.8% | 21,964 | $65K |
| Lido Advisors, LLC | 0.00% | Reduce -25.0% | 16,623 | $50K |
| FMR LLC | 0.00% | No change | 14,845 | $44K |
| Wagner Wealth Management, LLC | 0.01% | Add +2.3% | 12,686 | $37K |
| Riverview Capital Advisers, LLC | 0.01% | Reduce -0.5% | 12,669 | $37K |
| Focus Partners Wealth | 0.00% | No change | 12,156 | $36K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.1% | 12,085 | $36K |
| Point72 Asset Management | 0.00% | New | 11,403 | $34K |
| Abel Hall, LLC | 0.01% | No change | 11,037 | $33K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | New | 10,639 | $31K |
| Deutsche Bank AG | 0.00% | No change | 8,729 | $26K |
| Geneos Wealth Management Inc. | 0.00% | Add +73.3% | 7,800 | $23K |
| Bank of America Corp. | 0.00% | Reduce -14.2% | 4,670 | $14K |
| Cwm, LLC | 0.00% | Reduce -0.1% | 1,006 | $3K |
| Tower Research Capital LLC (TRC) | 0.00% | New | 945 | $3K |
| Optiver Holding B.V. | 0.00% | No change | 412 | $1K |
| Torren Management, LLC | 0.00% | — | 389 | $1K |
| Fortitude Family Office, LLC | 0.00% | No change | 301 | $888 |
| BNP Paribas Financial Markets | 0.00% | No change | 236 | $696 |
| JPMorgan Chase & Co. | 0.00% | No change | 222 | $655 |
| Citigroup Inc. | 0.00% | Add +3900.0% | 200 | $590 |
| Nisa Investment Advisors, LLC | 0.00% | No change | 129 | $381 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -12.5% | 7 | $21 |
| Royal Bank of Canada | 0.00% | Reduce -98.2% | 40 | $0 |
"% of holder's portfolio" is SERA's weight in each manager's 13F, not the share of Sera Prognostics Inc. Class A the manager owns.