Sera Prognostics Inc. Class ASERA
13F holders, Q3 2025 (September 30)62holders +3
11new positions
9sold out
2famous investors
$3.06avg. 13F price*
At the end of Q3 2025, 62 institutions reported holding Sera Prognostics Inc. Class A (SERA) in their 13F filings, up 3 from Q2 2025. 11 opened new positions and 9 sold out. The largest holders were Baker Bros. Advisors LP ($16.8M), Whetstone Capital Advisors, LLC ($11.1M) and Aberdeen Group plc ($7.0M). 2 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio) and Israel Englander (0.0% of Millennium 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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 11 | $569K |
| Exits | 9 | $987K |
All 13F filers, Q2 2025 → Q3 2025: 439,257 shares bought and 925,799 shares sold, net −486,542 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 62 holders
| Baker Bros. Advisors LP | 0.12% | No change | 5,498,170 | $16.8M |
| Whetstone Capital Advisors, LLC | 3.08% | No change | 3,632,371 | $11.1M |
| Aberdeen Group plc | 0.01% | Add +2.4% | 2,279,699 | $7.0M |
| Vivo Capital, LLC | 0.41% | No change | 1,650,440 | $5.1M |
| Vanguard Group Inc. | 0.00% | Add +4.6% | 1,217,190 | $3.7M |
| Citadel Advisors | 0.00% | Add +3.9% | 653,746 | $2.0M |
| Captrust Financial Advisors | 0.00% | Add +0.0% | 602,336 | $1.8M |
| Geode Capital Management, LLC | 0.00% | Add +9.5% | 331,115 | $1.0M |
| Sanders Morris Harris LLC | 0.11% | No change | 263,600 | $807K |
| AWM Investment Company, Inc. | 0.06% | Reduce -69.5% | 207,382 | $635K |
| BlackRock, Inc. | 0.00% | Add +23.2% | 178,977 | $548K |
| Millennium Management | 0.00% | Reduce -31.0% | 127,287 | $389K |
| State Street Corp. | 0.00% | Add +2.6% | 124,792 | $382K |
| Corient Private Wealth LP | 0.00% | No change | 100,000 | $306K |
| Squarepoint Ops LLC | 0.00% | Add +8.9% | 93,063 | $285K |
| Northern Trust Corp. | 0.00% | Reduce -3.4% | 88,483 | $271K |
| Balentine LLC | 0.01% | New | 84,475 | $258K |
| Morgan Stanley | 0.00% | Reduce -8.1% | 84,014 | $257K |
| Cliftonlarsonallen Wealth Advisors, LLC | 0.00% | No change | 78,855 | $241K |
| Bank of New York Mellon Corp | 0.00% | Reduce -1.9% | 75,267 | $230K |
| Perigon Wealth Management, LLC | 0.00% | No change | 72,685 | $222K |
| Gsa Capital Partners LLP | 0.02% | Add +4.3% | 65,190 | $199K |
| Requisite Capital Management, LLC | 0.03% | No change | 55,648 | $170K |
| Goldman Sachs Group Inc. | 0.00% | Add +19.4% | 54,839 | $168K |
| Ballentine Partners, LLC | 0.00% | No change | 49,664 | $152K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 45,705 | $140K |
| Twelve Points Wealth Management LLC | 0.03% | No change | 43,388 | $133K |
| HighTower Advisors, LLC | 0.00% | Reduce -1.7% | 42,234 | $129K |
| Caprock Group, LLC | 0.00% | — | 33,523 | $108K |
| Two Sigma Investments, LP | 0.00% | New | 31,736 | $97K |
| Birch Hill Investment Advisors LLC | 0.00% | New | 27,293 | $84K |
| UBS Group AG | 0.00% | Add +2292.5% | 24,523 | $75K |
| Qube Research & Technologies Ltd | 0.00% | Reduce -27.9% | 24,083 | $74K |
| Dimensional Fund Advisors LP | 0.00% | No change | 22,424 | $69K |
| Susquehanna International Group, LLP | 0.00% | Reduce -8.5% | 22,372 | $68K |
| Lido Advisors, LLC | 0.00% | New | 22,164 | $68K |
| FMR LLC | 0.00% | No change | 14,845 | $45K |
| Pallas Capital Advisors LLC | 0.00% | No change | 13,711 | $42K |
| Riverview Capital Advisers, LLC | 0.01% | No change | 12,733 | $39K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | New | 12,561 | $38K |
| Wagner Wealth Management, LLC | 0.01% | No change | 12,400 | $38K |
| Focus Partners Wealth | 0.00% | No change | 12,156 | $37K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 12,092 | $37K |
| Abel Hall, LLC | 0.01% | No change | 11,037 | $34K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.00% | Reduce -25.6% | 10,263 | $31K |
| Barclays PLC | 0.00% | Add +499700.0% | 9,996 | $31K |
| Deutsche Bank AG | 0.00% | No change | 8,729 | $27K |
| Bank of America Corp. | 0.00% | Add +40.8% | 5,444 | $17K |
| Geneos Wealth Management Inc. | 0.00% | New | 4,500 | $14K |
| Cubist Systematic Strategies, LLC | 0.00% | New | 2,328 | $7K |
| Royal Bank of Canada | 0.00% | Add +6047.2% | 2,213 | $7K |
| Cwm, LLC | 0.00% | Reduce -9.4% | 1,007 | $3K |
| Optiver Holding B.V. | 0.00% | New | 412 | $1K |
| Fortitude Family Office, LLC | 0.00% | New | 301 | $921 |
| BNP Paribas Financial Markets | 0.00% | Reduce -59.6% | 236 | $722 |
| Point72 (DIFC) Ltd | 0.00% | Add +14.2% | 233 | $713 |
| JPMorgan Chase & Co. | 0.00% | Add +52.0% | 222 | $679 |
| Nisa Investment Advisors, LLC | 0.00% | No change | 129 | $395 |
| Advisory Services Network, LLC | 0.00% | New | 19 | $58 |
| SBI Securities Co., Ltd. | 0.00% | Add +14.3% | 8 | $24 |
| Citigroup Inc. | 0.00% | No change | 5 | $15 |
| Avion Wealth | 0.00% | New | 151 | $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.