PSNL Personalis, Inc.
Personalis, Inc. (PSNL) Institutional Ownership
What the institutions did with PSNL 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.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Merck & Co., Inc. | 14.0M | 16.5% |
| ARK Investment Management LLC | 8.3M | 9.7% |
| BlackRock, Inc. | 7.1M | 8.3% |
| LIGHTSPEED MANAGEMENT COMPANY, L.L.C. | 6.1M | 7.2% |
| AMERIPRISE FINANCIAL INC | 6.1M | 7.2% |
| Deep Track Capital, LP | 4.0M | 4.7% |
| Aberdeen Group plc | 3.7M | 4.4% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.0M | 3.5% |
| Casdin Capital, LLC | 2.6M | 3.0% |
| KENNEDY CAPITAL MANAGEMENT LLC | 2.4M | 2.8% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8M | 2.1% |
| BANK OF AMERICA CORP /DE/ | 1.8M | 2.1% |
| AIGH Capital Management LLC | 1.7M | 2.0% |
| Blue Water Life Science Advisors, LP | 1.7M | 2.0% |
| DIMENSIONAL FUND ADVISORS LP | 1.5M | 1.8% |
| STATE STREET CORP | 1.5M | 1.8% |
| MORGAN STANLEY | 1.3M | 1.5% |
| GOLDMAN SACHS GROUP INC | 931.0K | 1.1% |
| HRT FINANCIAL LP | 930.8K | 1.1% |
| Nuveen, LLC | 753.0K | 0.9% |
| JANE STREET GROUP, LLC | 738.2K | 0.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 659.8K | 0.8% |
| NORTHERN TRUST CORP | 632.8K | 0.7% |
| Trexquant Investment LP | 600.2K | 0.7% |
| HOWLAND CAPITAL MANAGEMENT LLC | 555.6K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | Sold Out | 4.8M | 0 | -4.8M |
| LIGHTSPEED MANAGEMENT COMPANY, L.L.C. | Reduced | 8.2M | 6.1M | -2.1M |
| BANK OF AMERICA CORP /DE/ | Increased | 111.3K | 1.8M | +1.7M |
| BlackRock, Inc. | Increased | 5.4M | 7.1M | +1.7M |
| AMERIPRISE FINANCIAL INC | Reduced | 7.6M | 6.1M | -1.5M |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 1.7M | 158.8K | -1.5M |
| AIGH Capital Management LLC | Reduced | 2.9M | 1.7M | -1.2M |
| MORGAN STANLEY | Increased | 237.3K | 1.3M | +1.0M |
| Deep Track Capital, LP | Increased | 3.0M | 4.0M | +1.0M |
| Casdin Capital, LLC | Increased | 1.6M | 2.6M | +950.0K |
| PFM Health Sciences, LP | Sold Out | 870.1K | 0 | -870.1K |
| JANE STREET GROUP, LLC | New | 0 | 738.2K | +738.2K |
| Portolan Capital Management, LLC | Sold Out | 736.7K | 0 | -736.7K |
| HRT FINANCIAL LP | Increased | 208.9K | 930.8K | +721.9K |
| Trexquant Investment LP | New | 0 | 600.2K | +600.2K |
| JPMORGAN CHASE & CO | Reduced | 575.5K | 42.6K | -532.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.3M | 1.8M | +524.8K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.1M | 1.5M | +430.7K |
| Nuveen, LLC | Increased | 343.5K | 753.0K | +409.5K |
| STATE STREET CORP | Increased | 1.1M | 1.5M | +352.9K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 13.6K | 364.8K | +351.1K |
| ARK Investment Management LLC | Increased | 7.9M | 8.3M | +327.2K |
| Balyasny Asset Management L.P. | Sold Out | 308.7K | 0 | -308.7K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Sold Out | 300.0K | 0 | -300.0K |
| Militia Capital Management LLC | New | 0 | 291.9K | +291.9K |
| GILDER GAGNON HOWE & CO LLC | New | 0 | 278.5K | +278.5K |
| Aberdeen Group plc | Increased | 3.5M | 3.7M | +259.0K |
| STEMPOINT CAPITAL LP | New | 0 | 247.8K | +247.8K |
| NORTHERN TRUST CORP | Increased | 405.8K | 632.8K | +227.0K |
| UBS Group AG | Reduced | 383.5K | 164.8K | -218.7K |
| GOLDMAN SACHS GROUP INC | Increased | 737.1K | 931.0K | +193.9K |
| KENNEDY CAPITAL MANAGEMENT LLC | Increased | 2.2M | 2.4M | +180.7K |
| FRED ALGER MANAGEMENT, LLC | New | 0 | 165.6K | +165.6K |
| ROYCE & ASSOCIATES LP | Sold Out | 156.0K | 0 | -156.0K |
| CITADEL ADVISORS LLC | New | 0 | 145.0K | +145.0K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2.9M | 3.0M | +141.7K |
| Jump Financial, LLC | New | 0 | 130.3K | +130.3K |
| Engineers Gate Manager LP | New | 0 | 115.8K | +115.8K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 339.5K | 453.3K | +113.7K |
| TD Asset Management Inc | Sold Out | 105.7K | 0 | -105.7K |
| Brevan Howard Capital Management LP | New | 0 | 99.5K | +99.5K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 560.5K | 659.8K | +99.3K |
| Kercheville Advisors, LLC | New | 0 | 93.8K | +93.8K |
| SEI INVESTMENTS CO | Reduced | 139.0K | 52.0K | -87.0K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Increased | 1.1K | 87.1K | +86.0K |
| Tidal Investments LLC | New | 0 | 85.5K | +85.5K |
| CITIGROUP INC | Increased | 7.3K | 92.7K | +85.4K |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | Reduced | 235.0K | 157.5K | -77.5K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | Increased | 2.7K | 75.3K | +72.6K |
| Sumitomo Mitsui Trust Group, Inc. | Reduced | 484.3K | 417.5K | -66.8K |
| Amova Asset Management Americas, Inc. | Reduced | 484.3K | 417.5K | -66.8K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 144.6K | 209.3K | +64.7K |
| TUDOR INVESTMENT CORP ET AL | Increased | 209.8K | 274.3K | +64.5K |
| Bank of New York Mellon Corp | Increased | 124.6K | 189.1K | +64.4K |
| Aquatic Capital Management LLC | Sold Out | 64.3K | 0 | -64.3K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 149.3K | 87.0K | -62.4K |
| Susquehanna Portfolio Strategies, LLC | Increased | 61.3K | 121.3K | +60.0K |
| FMR LLC | Reduced | 62.7K | 4.1K | -58.6K |
| UDINE WEALTH MANAGEMENT, INC. | New | 0 | 50.0K | +50.0K |
| ExodusPoint Capital Management, LP | New | 0 | 49.3K | +49.3K |
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.