Personalis, Inc.
PSNL- Exchange
- Nasdaq
- Industry
- Services-Medical Laboratories
- SEC CIK
- 0001527753
In the last 90 days, Personalis, Inc. insiders filed 0 open-market purchases and 6 sales; 158 institutions reported holding it in 13F filings for Q2 2026, worth $1.14B in total; ARK Invest is the only superinvestor holding it.
13F holders, Q2 2026
Institutional positions in Personalis, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 158
- +20 vs. Q1 2026
- Shares held
- 85.0M
- +380.9K (+0.5%) vs. Q1 2026
- Total value
- $1.14B
- +$598.8M (+111.2%) vs. Q1 2026
- New holders
- 42
- 68 more added
- Sold out
- 22
- 34 more reduced
2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PSNL on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 158 | $1.14B |
| Q1 2026 | 140 | $538.8M |
| Q4 2025 | 126 | $644.8M |
| Q3 2025 | 109 | $421.8M |
| Q2 2025 | 105 | $396.6M |
| Q1 2025 | 104 | $192.4M |
| Q4 2024 | 107 | $298.2M |
| Q3 2024 | 83 | $157.6M |
| Q2 2024 | 69 | $25.7M |
| Q1 2024 | 71 | $33.2M |
| Q4 2023 | 69 | $46.1M |
| Q3 2023 | 63 | $30.0M |
| Q2 2023 | 66 | $49.0M |
| Q1 2023 | 63 | $75.0M |
| Q4 2022 | 80 | $55.0M |
| Q3 2022 | 81 | $83.9M |
| Q2 2022 | 99 | $105.6M |
| Q1 2022 | 125 | $265.3M |
| Q4 2021 | 108 | $456.2M |
| Q3 2021 | 120 | $604.2M |
| Q2 2021 | 136 | $807.9M |
| Q1 2021 | 134 | $763.1M |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Personalis, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Merck & Co., Inc. | 14,044,943 | $188.2M | 35.75% | 00.0% | Unchanged |
| ARK Investment Management LLCSuperinvestorARK Invest | 8,271,339 | $110.8M | 0.72% | +327,227+4.1% | Added |
| BlackRock, Inc. | 7,082,491 | $94.9M | 0.00% | +1,692,606+31.4% | Added |
| Lightspeed Management Company, L.L.C. | 6,101,850 | $81.8M | 3.40% | −2,058,884−25.2% | Reduced |
| Ameriprise Financial Inc | 6,086,315 | $81.6M | 0.02% | −1,506,492−19.8% | Reduced |
| Deep Track Capital, LP | 4,000,000 | $53.6M | 0.79% | +1,000,000+33.3% | Added |
| Standard Life Aberdeen plc | 3,747,290 | $50.2M | 0.07% | +258,982+7.4% | Added |
| Vanguard Capital Management LLC | 3,010,150 | $40.3M | 0.00% | +141,687+4.9% | Added |
| Casdin Capital, LLC | 2,550,000 | $34.2M | 1.71% | +950,000+59.4% | Added |
| Kennedy Capital Management, Inc. | 2,364,282 | $31.7M | 0.56% | +180,710+8.3% | Added |
| Geode Capital Management, LLC | 1,822,445 | $24.4M | 0.00% | +524,790+40.4% | Added |
| Bank of America Corp | 1,820,541 | $24.4M | 0.00% | +1,709,235+1,535.6% | Added |
| AIGH Capital Management LLC | 1,715,000 | $23.0M | 2.08% | −1,185,000−40.9% | Reduced |
| Blue Water Life Science Advisors, LLC | 1,676,300 | $22.5M | 14.15% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 1,496,983 | $20.1M | 0.00% | +430,735+40.4% | Added |
| State Street Corp | 1,487,077 | $19.9M | 0.00% | +352,907+31.1% | Added |
| Morgan Stanley | 1,270,946 | $17.0M | 0.00% | +1,033,631+435.6% | Added |
| Goldman Sachs Group Inc | 931,031 | $12.5M | 0.00% | +193,899+26.3% | Added |
| HRT Financial LP | 930,816 | $12.5M | 0.02% | +721,925+345.6% | Added |
| Nuveen, LLC | 753,004 | $10.1M | 0.00% | +409,484+119.2% | Added |
| Jane Street Group, LLC | 738,241 | $9.89M | 0.01% | +738,241 | New |
| Vanguard Portfolio Management LLC | 659,834 | $8.84M | 0.00% | +99,295+17.7% | Added |
| Northern Trust Corp | 632,803 | $8.48M | 0.00% | +227,003+55.9% | Added |
| Trexquant Investment LP | 600,216 | $8.04M | 0.05% | +600,216 | New |
| Howland Capital Management LLC | 555,641 | $7.45M | 0.27% | +8,526+1.6% | Added |
| State of Michigan Retirement System | 493,798 | $6.62M | 0.03% | 00.0% | Unchanged |
| Vanguard Fiduciary Trust Co | 453,257 | $6.07M | 0.00% | +113,749+33.5% | Added |
| Millennium Management LLC | 450,160 | $6.03M | 0.00% | +31,032+7.4% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 417,488 | $5.59M | 0.00% | −66,782−13.8% | Reduced |
| Nikko Asset Management Americas, Inc. | 417,488 | $5.59M | 0.07% | −66,782−13.8% | Reduced |
| BNP Paribas Arbitrage, SA | 364,764 | $4.89M | 0.00% | +351,130+2,575.4% | Added |
| Davy Global Fund Management Ltd | 351,741 | $4.71M | 0.30% | +28,367+8.8% | Added |
| Wellington Shields Capital Management, LLC | 339,733 | $4.55M | 0.58% | 00.0% | Unchanged |
| Wellington Shields & Co., LLC | 292,489 | $3.92M | 0.88% | 00.0% | Unchanged |
| Militia Capital Management LLC | 291,881 | $3.91M | 0.71% | +291,881 | New |
| Gilder Gagnon Howe & Co LLC | 278,490 | $3.73M | 0.04% | +278,490 | New |
| Tudor Investment Corp Et Al | 274,321 | $3.68M | 0.02% | +64,495+30.7% | Added |
| StemPoint Capital LP | 247,783 | $3.32M | 0.57% | +247,783 | New |
| Perkins Capital Management Inc | 239,000 | $3.20M | 2.53% | 00.0% | Unchanged |
| Bruce & Co., Inc. | 233,000 | $3.12M | 0.84% | 00.0% | Unchanged |
| First Manhattan Co | 230,600 | $3.09M | 0.01% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 209,320 | $2.80M | 0.00% | +64,694+44.7% | Added |
| Bank of New York Mellon Corp | 189,065 | $2.53M | 0.00% | +64,424+51.7% | Added |
| Fred Alger Management, LLC | 165,579 | $2.22M | 0.01% | +165,579 | New |
| UBS Group AG | 164,761 | $2.21M | 0.00% | −218,742−57.0% | Reduced |
| Price T Rowe Associates Inc | 158,838 | $2.13M | 0.00% | −1,491,303−90.4% | Reduced |
| Nano Cap New Millennium Growth Fund L P | 157,500 | $2.11M | 1.62% | −77,500−33.0% | Reduced |
| Citadel Advisors LLC | 144,998 | $1.94M | 0.00% | +144,998 | New |
| Swiss National Bank | 136,500 | $1.83M | 0.00% | +31,100+29.5% | Added |
| Williams Jones Wealth Management, LLC. | 134,072 | $1.80M | 0.02% | 00.0% | Unchanged |
| LPL Financial LLC | 132,602 | $1.78M | 0.00% | +590+0.4% | Added |
| Jump Financial, LLC | 130,294 | $1.75M | 0.02% | +130,294 | New |
| Russell Investments Group, Ltd. | 126,670 | $1.70M | 0.00% | +24,733+24.3% | Added |
| Susquehanna Portfolio Strategies, LLC | 121,299 | $1.63M | 0.03% | +60,007+97.9% | Added |
| Engineers Gate Manager LP | 115,842 | $1.55M | 0.02% | +115,842 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 105,225 | $1.41M | 0.00% | +46,253+78.4% | Added |
| Janney Montgomery Scott LLC | 105,001 | $1.41M | 0.00% | +30,001+40.0% | Added |
| American Century Companies Inc | 100,094 | $1.34M | 0.00% | −14,589−12.7% | Reduced |
| Brevan Howard Capital Management LP | 99,542 | $1.33M | 0.02% | +99,542 | New |
| Kercheville Advisors, LLC | 93,800 | $1.26M | 0.38% | +93,800 | New |
| Citigroup Inc | 92,708 | $1.24M | 0.00% | +85,384+1,165.8% | Added |
| UBS Asset Management Americas Inc | 87,068 | $1.17M | 0.00% | +85,969+7,822.5% | Added |
| Susquehanna International Group, LLP | 86,982 | $1.17M | 0.00% | −62,354−41.8% | Reduced |
| Rhumbline Advisers | 86,321 | $1.16M | 0.00% | +23,210+36.8% | Added |
| Toroso Investments, LLC | 85,504 | $1.15M | 0.00% | +85,504 | New |
| Invesco Ltd. | 83,368 | $1.12M | 0.00% | +20,623+32.9% | Added |
| AlphaCentric Advisors LLC | 78,924 | $1.06M | 0.90% | +14,892+23.3% | Added |
| California State Teachers Retirement System | 75,266 | $1.01M | 0.00% | +72,552+2,673.2% | Added |
| Green Alpha Advisors, LLC | 67,467 | $904.1K | 0.61% | +1,058+1.6% | Added |
| Wells Fargo & Company | 66,775 | $894.8K | 0.00% | +37,800+130.5% | Added |
| Deutsche Bank AG | 66,188 | $886.9K | 0.00% | +31,289+89.7% | Added |
| Royal Bank of Canada | 63,947 | $857.0K | 0.00% | −14,795−18.8% | Reduced |
| XTX Topco Ltd | 59,143 | $792.5K | 0.01% | +43,108+268.8% | Added |
| Two Sigma Investments, LP | 57,258 | $767.3K | 0.00% | −33,453−36.9% | Reduced |
| Vanguard Asset Management, Ltd | 56,427 | $756.1K | 0.00% | +20,910+58.9% | Added |
| Barclays PLC | 53,437 | $716.1K | 0.00% | +1,860+3.6% | Added |
| SEI Investments Co | 52,033 | $697.2K | 0.00% | −87,013−62.6% | Reduced |
| Cerity Partners LLC | 49,264 | $660.1K | 0.00% | +15,164+44.5% | Added |
| ExodusPoint Capital Management, LP | 49,256 | $660.0K | 0.01% | +49,256 | New |
| Schonfeld Strategic Advisors LLC | 48,989 | $656.5K | 0.00% | +48,989 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 47,022 | $630.1K | 0.00% | +15,896+51.1% | Added |
| JPMorgan Chase & Co | 42,569 | $585.3K | 0.00% | −532,921−92.6% | Reduced |
| Gsa Capital Partners LLP | 43,244 | $579.0K | 0.04% | −38,931−47.4% | Reduced |
| Qube Research & Technologies Ltd | 40,842 | $547.3K | 0.00% | +40,842 | New |
| Atom Investors LP | 40,763 | $546.2K | 0.05% | +40,763 | New |
| MetLife Investment Management | 39,769 | $532.9K | 0.00% | +11,767+42.0% | Added |
| Pathstone Holdings, LLC | 39,015 | $519.8K | 0.00% | +566+1.5% | Added |
| Dynamic Technology Lab Private Ltd | 38,394 | $514.0K | 0.11% | +38,394 | New |
| AlpInvest Partners B.V. | 37,703 | $505.2K | 0.84% | +37,703 | New |
| Winton Group Ltd | 37,013 | $496.0K | 0.02% | +37,013 | New |
| Legal & General Group Plc | 36,419 | $488.0K | 0.00% | +8,721+31.5% | Added |
| Alliancebernstein L.P. | 73,700 | $469.5K | 0.00% | +45,000+156.8% | Added |
| Entropy Technologies, LP | 30,420 | $407.6K | 0.02% | +30,420 | New |
| Jupiter Topco LLC | 30,200 | $404.5K | 0.00% | +30,200 | New |
| Vanguard Global Advisers, LLC | 28,015 | $375.4K | 0.00% | −6,965−19.9% | Reduced |
| Ieq Capital, LLC | 27,327 | $366.2K | 0.00% | +27,327 | New |
| Marshall Wace, LLP | 26,730 | $358.2K | 0.00% | +26,730 | New |
| Voleon Capital Management LP | 26,502 | $355.1K | 0.01% | +26,502 | New |
| Captrust Financial Advisors | 25,591 | $342.9K | 0.00% | +2,058+8.7% | Added |
| Squarepoint Ops LLC | 23,808 | $319.0K | 0.00% | +23,808 | New |