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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.

Q1 2026 vs. Q4 2025

How the institutions holding Personalis, Inc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of PSNL: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders1262140+16
Shares81.0M3.59M84.6M+7.21M (+9.3%)
Value$644.8M$28.6M$538.8M−$77.4M (−12.6%)

2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (36)

Institutions that held Personalis, Inc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to PSNL in Q1 2026
InstitutionSharesValue% of portfolio
Deep Track Capital, LP3,000,000$19.1M0.39%
Vanguard Capital Management LLC2,868,463$18.3M0.00%
Casdin Capital, LLC1,600,000$10.2M0.77%
Vanguard Portfolio Management LLC560,539$3.57M0.00%
Millennium Management LLC419,128$2.67M0.00%
Vanguard Fiduciary Trust Co339,508$2.16M0.00%
Balyasny Asset Management LLC308,696$1.97M0.00%
Adage Capital Partners GP, L.L.C.300,000$1.91M0.00%
Tudor Investment Corp Et Al209,826$1.34M0.01%
Royce & Associates LP156,036$993.9K0.01%
Swiss National Bank105,400$671.4K0.00%
Gsa Capital Partners LLP82,175$523.0K0.03%
Aquatic Capital Management LLC64,269$409.4K0.01%
Quadrature Capital Ltd38,722$246.7K0.00%
Vanguard Asset Management, Ltd35,517$226.2K0.00%
Vanguard Global Advisers, LLC34,980$222.8K0.00%
Virtu Financial LLC34,434$219.0K0.01%
Cerity Partners LLC34,100$217.2K0.00%
Janus Henderson Group PLC30,200$191.9K0.00%
Bridgefront Capital, LLC25,643$163.3K0.04%
ADAR1 Capital Management, LLC25,000$159.3K0.01%
Captrust Financial Advisors23,533$149.9K0.00%
Persistent Asset Partners Ltd20,929$133.3K0.05%
Vanguard Investments Australia, Ltd.16,113$102.6K0.00%
Arizona State Retirement System14,635$93.2K0.00%
KLP Kapitalforvaltning AS11,700$74.5K0.00%
Nisa Investment Advisors, LLC3,600$22.9K0.00%
Opal Wealth Advisors, LLC3,500$22.3K0.01%
Quantbot Technologies LP2,239$14.3K0.00%
Northwestern Mutual Wealth Management Co1,977$12.6K0.00%
Great West Life Assurance Co701$4.00K0.00%
Huntington National Bank144$9170.00%
Rothschild Investment LLC85$5410.00%
Twin Peaks Wealth Advisors, LLC72$4590.00%
Harbour Investments, Inc.53$3420.00%
Swiss Life Asset Management Ltd30,116––

Sold out (20)

Institutions that held Personalis, Inc. at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of PSNL in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Next Century Growth Investors LLC624,363$4.97M
Jane Street Group, LLC171,166$1.36M
D.A. Davidson & Co.145,507$1.16M
Susquehanna Fundamental Investments, LLC108,951$867.3K
Citadel Advisors LLC92,162$733.6K
Verition Fund Management LLC51,804$412.4K
Polen Capital Management LLC50,705$403.6K
Stifel Financial Corp13,933$110.9K
Colony Group, LLC13,527$107.7K
Skopos Labs, Inc.12,045$95.5K
Simplex Trading, LLC10,923$86.9K
HSBC Holdings PLC10,474$84.1K
DRW Securities, LLC10,483$83.4K
Quest Partners LLC5,007$39.9K
Amalgamated Bank1,575$13.0K
MCF Advisors LLC800$6.37K
Daiwa Securities Group Inc.200$2.00K
Signaturefd, LLC57$454
Rockefeller Capital Management L.P.36$287
SRS Capital Advisors, Inc.9$72

Not filed for Q1 2026 yet (2)

Institutions that held Personalis, Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding PSNL in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc3,253,797$25.9M
Oracle Investment Management Inc339,343$2.70M