PERSONALIS INC (PSNL) Institutional Ownership Changes & 13F Activity

PERSONALIS INC (PSNL) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, ARK Invest, and Polen Capital Management.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2022Renaissance Technologies LLCSell-76,476688,335$2,044
Q2 2022Renaissance Technologies LLCBuy672,400764,811$2,639
Q2 2022ARK InvestBuy163,0365,347,820$21,177
Q1 2022Renaissance Technologies LLCSell-395,30292,411$757
Q1 2022ARK InvestBuy296,6695,184,784$42,463
Q4 2021ARK InvestSell-277,2454,888,115$69,753
Q3 2021ARK InvestBuy223,3965,165,360$99,382
Q3 2021Renaissance Technologies LLCBuy13,913487,713$9,384
Q2 2021ARK InvestSell-763,8634,941,964$125,032
Q2 2021Renaissance Technologies LLCSell-199,300473,800$11,987
Q1 2021ARK InvestSell-1,072,7965,705,827$140,420
Q1 2021Renaissance Technologies LLCBuy659,300673,100$16,565
Q4 2020ARK InvestBuy3,485,4826,778,623$248,165
Q3 2020ARK InvestBuy1,224,4583,293,141$71,362
Q3 2020Renaissance Technologies LLCBuy13,80013,800$299
Q2 2020ARK InvestBuy964,6182,068,683$26,831
Q1 2020ARK InvestBuy478,2091,104,065$8,910
Q4 2019ARK InvestBuy326,392625,856$6,822
Q3 2019ARK InvestBuy101,744299,464$4,395
Q2 2019ARK InvestBuy197,720197,720$5,368

Frequently asked questions about PSNL activity

  • Which institutional owners are buying PSNL?

    Institutional owners buying PSNL include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in PSNL activity?

    "Buy" means an investor increased their reported position in PSNL compared to the prior reporting period. This reflects growing exposure to PERSONALIS INC (PSNL) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in PSNL increasing?

    Institutional interest in PSNL can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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