SERA Sera Prognostics, Inc.
Sera Prognostics, Inc. (SERA) Institutional Ownership
What the institutions did with SERA last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| BAKER BROS. ADVISORS LP | 5.5M | 32.2% |
| Whetstone Capital Advisors, LLC | 3.3M | 19.4% |
| Aberdeen Group plc | 2.8M | 16.1% |
| Vivo Capital, LLC | 1.7M | 9.7% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.3M | 7.6% |
| CAPTRUST FINANCIAL ADVISORS | 535.8K | 3.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 349.0K | 2.0% |
| BlackRock, Inc. | 221.4K | 1.3% |
| AWM Investment Company, Inc. | 207.4K | 1.2% |
| VANGUARD FIDUCIARY TRUST CO | 170.9K | 1.0% |
| STATE STREET CORP | 124.8K | 0.7% |
| MILLENNIUM MANAGEMENT LLC | 74.0K | 0.4% |
| Perigon Wealth Management, LLC | 72.7K | 0.4% |
| NORTHERN TRUST CORP | 68.6K | 0.4% |
| Bank of New York Mellon Corp | 60.9K | 0.4% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 55.7K | 0.3% |
| Requisite Capital Management, LLC | 55.6K | 0.3% |
| MORGAN STANLEY | 51.0K | 0.3% |
| Qube Research & Technologies Ltd | 50.9K | 0.3% |
| Ballentine Partners, LLC | 49.7K | 0.3% |
| Twelve Points Wealth Management LLC | 43.4K | 0.3% |
| HighTower Advisors, LLC | 42.2K | 0.2% |
| CITADEL ADVISORS LLC | 41.4K | 0.2% |
| Catalyst Funds Management Pty Ltd | 38.9K | 0.2% |
| GOLDMAN SACHS GROUP INC | 32.5K | 0.2% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| PSP Research LLC | Sold Out | 2.4M | 0 | -2.4M |
| SANDERS MORRIS HARRIS LLC | Sold Out | 315.0K | 0 | -315.0K |
| CITADEL ADVISORS LLC | Reduced | 248.9K | 41.4K | -207.5K |
| Aberdeen Group plc | Increased | 2.6M | 2.8M | +202.8K |
| GSA CAPITAL PARTNERS LLP | Sold Out | 105.0K | 0 | -105.0K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.2M | 1.3M | +93.7K |
| MORGAN STANLEY | Reduced | 105.0K | 51.0K | -54.0K |
| JANE STREET GROUP, LLC | Sold Out | 53.9K | 0 | -53.9K |
| Squarepoint Ops LLC | Sold Out | 31.4K | 0 | -31.4K |
| Qube Research & Technologies Ltd | Increased | 19.9K | 50.9K | +31.0K |
| BARCLAYS PLC | Reduced | 32.0K | 3.2K | -28.8K |
| NORTHERN TRUST CORP | Reduced | 96.5K | 68.6K | -27.9K |
| BlackRock, Inc. | Increased | 196.1K | 221.4K | +25.3K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 91.5K | 74.0K | -17.5K |
| Catalyst Funds Management Pty Ltd | Increased | 23.6K | 38.9K | +15.3K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 363.6K | 349.0K | -14.7K |
| GOLDMAN SACHS GROUP INC | Increased | 18.5K | 32.5K | +14.1K |
| Arkadios Wealth Advisors | Sold Out | 12.4K | 0 | -12.4K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Sold Out | 12.1K | 0 | -12.1K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Increased | 45.7K | 55.7K | +10.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 19.5K | 29.5K | +10.0K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 22.0K | 16.2K | -5.7K |
| FMR LLC | Reduced | 6.6K | 2.5K | -4.0K |
| UBS Group AG | Reduced | 14.9K | 11.3K | -3.6K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 169.7K | 170.9K | +1.2K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.