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, Q1 2026
Institutional positions in Personalis, Inc. as of Mar 31, 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
- 140
- +16 vs. Q4 2025
- Shares held
- 84.6M
- +7.21M (+9.3%) vs. Q4 2025
- Total value
- $538.8M
- −$77.4M (−12.6%) vs. Q4 2025
- New holders
- 36
- 47 more added
- Sold out
- 20
- 36 more reduced
2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: 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, Q1 2026
Shares, value and share of portfolio for each institution holding Personalis, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Merck & Co., Inc. | 14,044,943 | $89.5M | 25.60% | 00.0% | Unchanged |
| Lightspeed Management Company, L.L.C. | 8,160,734 | $52.0M | 5.26% | 00.0% | Unchanged |
| ARK Investment Management LLCSuperinvestorARK Invest | 7,944,112 | $50.6M | 0.39% | +65,025+0.8% | Added |
| Ameriprise Financial Inc | 7,592,807 | $48.4M | 0.01% | +1,305,656+20.8% | Added |
| BlackRock, Inc. | 5,389,885 | $34.3M | 0.00% | +70,377+1.3% | Added |
| T. Rowe Price Investment Management, Inc. | 4,758,091 | $30.3M | 0.02% | −6,022,199−55.9% | Reduced |
| Standard Life Aberdeen plc | 3,488,308 | $22.2M | 0.04% | +238,413+7.3% | Added |
| Deep Track Capital, LP | 3,000,000 | $19.1M | 0.39% | +3,000,000 | New |
| AIGH Capital Management LLC | 2,900,000 | $18.5M | 3.78% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 2,868,463 | $18.3M | 0.00% | +2,868,463 | New |
| Kennedy Capital Management, Inc. | 2,183,572 | $13.9M | 0.29% | +470,920+27.5% | Added |
| Blue Water Life Science Advisors, LLC | 1,676,300 | $10.7M | 8.56% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 1,650,141 | $10.5M | 0.00% | +201,556+13.9% | Added |
| Casdin Capital, LLC | 1,600,000 | $10.2M | 0.77% | +1,600,000 | New |
| Geode Capital Management, LLC | 1,297,655 | $8.27M | 0.00% | −1520.0% | Reduced |
| State Street Corp | 1,134,170 | $7.22M | 0.00% | +83,580+8.0% | Added |
| Dimensional Fund Advisors LP | 1,066,248 | $6.79M | 0.00% | +83,074+8.4% | Added |
| PFM Health Sciences, LP | 870,097 | $5.54M | 0.58% | +64,280+8.0% | Added |
| Goldman Sachs Group Inc | 737,132 | $4.70M | 0.00% | +394,657+115.2% | Added |
| Portolan Capital Management, LLC | 736,713 | $4.69M | 0.25% | +357,516+94.3% | Added |
| JPMorgan Chase & Co | 575,490 | $3.59M | 0.00% | +548,774+2,054.1% | Added |
| Vanguard Portfolio Management LLC | 560,539 | $3.57M | 0.00% | +560,539 | New |
| Howland Capital Management LLC | 547,115 | $3.49M | 0.14% | 00.0% | Unchanged |
| State of Michigan Retirement System | 493,798 | $3.15M | 0.02% | 00.0% | Unchanged |
| Sumitomo Mitsui Trust Holdings, Inc. | 484,270 | $3.08M | 0.00% | −34,171−6.6% | Reduced |
| Nikko Asset Management Americas, Inc. | 484,270 | $3.08M | 0.04% | −34,171−6.6% | Reduced |
| Millennium Management LLC | 419,128 | $2.67M | 0.00% | +419,128 | New |
| Northern Trust Corp | 405,800 | $2.58M | 0.00% | +50,882+14.3% | Added |
| UBS Group AG | 383,503 | $2.44M | 0.00% | +76,935+25.1% | Added |
| Nuveen, LLC | 343,520 | $2.19M | 0.00% | +34,840+11.3% | Added |
| Wellington Shields Capital Management, LLC | 339,733 | $2.16M | 0.32% | −267−0.1% | Reduced |
| Vanguard Fiduciary Trust Co | 339,508 | $2.16M | 0.00% | +339,508 | New |
| Davy Global Fund Management Ltd | 323,374 | $2.06M | 0.16% | +55,700+20.8% | Added |
| Balyasny Asset Management LLC | 308,696 | $1.97M | 0.00% | +308,696 | New |
| Adage Capital Partners GP, L.L.C. | 300,000 | $1.91M | 0.00% | +300,000 | New |
| Wellington Shields & Co., LLC | 292,489 | $1.86M | 0.47% | 00.0% | Unchanged |
| Perkins Capital Management Inc | 239,000 | $1.52M | 1.43% | 00.0% | Unchanged |
| Morgan Stanley | 237,315 | $1.51M | 0.00% | +12,752+5.7% | Added |
| Nano Cap New Millennium Growth Fund L P | 235,000 | $1.50M | 1.40% | −55,000−19.0% | Reduced |
| Bruce & Co., Inc. | 233,000 | $1.48M | 0.42% | 00.0% | Unchanged |
| First Manhattan Co | 230,600 | $1.47M | 0.00% | −143,222−38.3% | Reduced |
| Tudor Investment Corp Et Al | 209,826 | $1.34M | 0.01% | +209,826 | New |
| HRT Financial LP | 208,891 | $1.33M | 0.00% | +111,119+113.7% | Added |
| Royce & Associates LP | 156,036 | $993.9K | 0.01% | +156,036 | New |
| Susquehanna International Group, LLP | 149,336 | $951.3K | 0.00% | +118,369+382.2% | Added |
| Charles Schwab Investment Management Inc | 144,626 | $921.3K | 0.00% | −13,544−8.6% | Reduced |
| SEI Investments Co | 139,046 | $885.7K | 0.00% | +83,040+148.3% | Added |
| Williams Jones Wealth Management, LLC. | 134,072 | $854.0K | 0.01% | 00.0% | Unchanged |
| LPL Financial LLC | 132,012 | $840.9K | 0.00% | −331−0.3% | Reduced |
| Bank of New York Mellon Corp | 124,641 | $794.0K | 0.00% | +1,690+1.4% | Added |
| American Century Companies Inc | 114,683 | $730.5K | 0.00% | +682+0.6% | Added |
| Bank of America Corp | 111,306 | $709.0K | 0.00% | +51,273+85.4% | Added |
| TD Asset Management Inc | 105,678 | $673.2K | 0.00% | −166,198−61.1% | Reduced |
| Swiss National Bank | 105,400 | $671.4K | 0.00% | +105,400 | New |
| Russell Investments Group, Ltd. | 101,937 | $649.3K | 0.00% | +97,753+2,336.4% | Added |
| Two Sigma Investments, LP | 90,711 | $577.8K | 0.00% | +58,235+179.3% | Added |
| Gsa Capital Partners LLP | 82,175 | $523.0K | 0.03% | +82,175 | New |
| Royal Bank of Canada | 78,742 | $502.0K | 0.00% | −568−0.7% | Reduced |
| Janney Montgomery Scott LLC | 75,000 | $478.0K | 0.00% | +45,000+150.0% | Added |
| Green Alpha Advisors, LLC | 66,409 | $423.0K | 0.42% | −2,108−3.1% | Reduced |
| Aquatic Capital Management LLC | 64,269 | $409.4K | 0.01% | +64,269 | New |
| AlphaCentric Advisors LLC | 64,032 | $407.9K | 0.41% | +16,236+34.0% | Added |
| Rhumbline Advisers | 63,111 | $402.0K | 0.00% | −1,070−1.7% | Reduced |
| Invesco Ltd. | 62,745 | $399.7K | 0.00% | +22,870+57.4% | Added |
| FMR LLC | 62,686 | $399.3K | 0.00% | +59,295+1,748.6% | Added |
| Susquehanna Portfolio Strategies, LLC | 61,292 | $390.4K | 0.01% | −552−0.9% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 58,972 | $375.7K | 0.00% | +2,138+3.8% | Added |
| Barclays PLC | 51,577 | $328.5K | 0.00% | −68,374−57.0% | Reduced |
| Quadrature Capital Ltd | 38,722 | $246.7K | 0.00% | +38,722 | New |
| Pathstone Holdings, LLC | 38,449 | $244.9K | 0.00% | −566−1.5% | Reduced |
| Alliancebernstein L.P. | 28,700 | $228.5K | 0.00% | 00.0% | Unchanged |
| Vanguard Asset Management, Ltd | 35,517 | $226.2K | 0.00% | +35,517 | New |
| Vanguard Global Advisers, LLC | 34,980 | $222.8K | 0.00% | +34,980 | New |
| Deutsche Bank AG | 34,899 | $222.3K | 0.00% | −3,928−10.1% | Reduced |
| Virtu Financial LLC | 34,434 | $219.0K | 0.01% | +34,434 | New |
| Cerity Partners LLC | 34,100 | $217.2K | 0.00% | +34,100 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 31,126 | $198.3K | 0.00% | +29,861+2,360.6% | Added |
| Janus Henderson Group PLC | 30,200 | $191.9K | 0.00% | +30,200 | New |
| Wells Fargo & Company | 28,975 | $184.6K | 0.00% | −35,276−54.9% | Reduced |
| MetLife Investment Management | 28,002 | $178.4K | 0.00% | +9,344+50.1% | Added |
| Legal & General Group Plc | 27,698 | $176.4K | 0.00% | +23,126+505.8% | Added |
| Bridgefront Capital, LLC | 25,643 | $163.3K | 0.04% | +25,643 | New |
| ADAR1 Capital Management, LLC | 25,000 | $159.3K | 0.01% | +25,000 | New |
| Captrust Financial Advisors | 23,533 | $149.9K | 0.00% | +23,533 | New |
| Persistent Asset Partners Ltd | 20,929 | $133.3K | 0.05% | +20,929 | New |
| China Universal Asset Management Co., Ltd. | 18,568 | $118.3K | 0.01% | +4,097+28.3% | Added |
| Tower Research Capital LLC (TRC) | 18,128 | $115.5K | 0.00% | +17,351+2,233.1% | Added |
| SG Americas Securities, LLC | 17,731 | $113.0K | 0.00% | −26,947−60.3% | Reduced |
| AQR Capital Management LLC | 17,422 | $111.0K | 0.00% | +7,182+70.1% | Added |
| US Bancorp | 17,344 | $110.5K | 0.00% | −2,718−13.5% | Reduced |
| Vanguard Investments Australia, Ltd. | 16,113 | $102.6K | 0.00% | +16,113 | New |
| XTX Topco Ltd | 16,035 | $102.1K | 0.00% | −23,377−59.3% | Reduced |
| New York State Common Retirement Fund | 15,800 | $100.6K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 15,748 | $100.3K | 0.00% | −20−0.1% | Reduced |
| Renaissance Technologies LLC | 15,200 | $96.8K | 0.00% | −77,794−83.7% | Reduced |
| Arizona State Retirement System | 14,635 | $93.2K | 0.00% | +14,635 | New |
| Manufacturers Life Insurance Company, The | 14,179 | $90.3K | 0.00% | −1,566−9.9% | Reduced |
| BNP Paribas Arbitrage, SA | 13,634 | $86.8K | 0.00% | +178+1.3% | Added |
| Scientech Research LLC | 13,575 | $86.5K | 0.07% | +1,173+9.5% | Added |
| Guggenheim Capital LLC | 13,372 | $85.2K | 0.00% | −206−1.5% | Reduced |