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Personalis, Inc. (PSNL) institutional ownership

Latest close $13.44 Jul 21, 2026
Market cap$476M 52-week range SectorHealthcare
Funds holding · Q1 2026
133
reported PSNL position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
78 buyers · 55 sellers

Personalis, Inc. (PSNL) price and institutional activity

Dates

Q1 2026

$0 bought by 78 investors
Deep Track Capital, LPCasdin Capital, LLC +76 more
$0 sold by 55 investors
T. Rowe Price Investment Management, Inc.Next Century Growth Investors LLC +53 more
Bought Sold Totals per quarter; hover a bar for the names.

Personalis, Inc. (PSNL) institutional activity · 55

Investor Type Est. change Change Δ Own Date
T. Rowe Price Investment Management, Inc. · Reduced
Change −6.0M Date Q1 2026
T. Rowe Price Investment Management, Inc. Reduced· Q1 2026 −6.0M Q1 2026
Next Century Growth Investors LLC · Exited
Change −624K Δ Own −100.0% Date Q1 2026
Next Century Growth Investors LLC Exited· Q1 2026 −624K −100.0% Q1 2026
Jane Street Group, LLC · Exited
Change −171K Δ Own −100.0% Date Q1 2026
Jane Street Group, LLC Exited· Q1 2026 −171K −100.0% Q1 2026
Td Asset Management Inc · Reduced
Change −166K Date Q1 2026
Td Asset Management Inc Reduced· Q1 2026 −166K Q1 2026
D.a. Davidson & Co. · Exited
Change −146K Δ Own −100.0% Date Q1 2026
D.a. Davidson & Co. Exited· Q1 2026 −146K −100.0% Q1 2026
First Manhattan Co. LLC. · Reduced
Change −143K Date Q1 2026
First Manhattan Co. LLC. Reduced· Q1 2026 −143K Q1 2026
Susquehanna Fundamental Investments, LLC · Exited
Change −109K Δ Own −100.0% Date Q1 2026
Susquehanna Fundamental Investments, LLC Exited· Q1 2026 −109K −100.0% Q1 2026
Citadel Advisors LLC Exited· Q1 2026 −92K −100.0% Q1 2026
Renaissance Technologies LLC Reduced· Q1 2026 −78K −83.7% Q1 2026
Barclays PLC · Reduced
Change −68K Date Q1 2026
Barclays PLC Reduced· Q1 2026 −68K Q1 2026
Nano Cap New Millennium Growth Fund L P · Reduced
Change −55K Date Q1 2026
Nano Cap New Millennium Growth Fund L P Reduced· Q1 2026 −55K Q1 2026
Verition Fund Management LLC · Exited
Change −52K Δ Own −100.0% Date Q1 2026
Verition Fund Management LLC Exited· Q1 2026 −52K −100.0% Q1 2026
Polen Capital Management LLC · Exited
Change −51K Δ Own −100.0% Date Q1 2026
Polen Capital Management LLC Exited· Q1 2026 −51K −100.0% Q1 2026
Wells Fargo & Company · Reduced
Change −35K Date Q1 2026
Wells Fargo & Company Reduced· Q1 2026 −35K Q1 2026
Amova Asset Management Americas, Inc. · Reduced
Change −34K Date Q1 2026
Amova Asset Management Americas, Inc. Reduced· Q1 2026 −34K Q1 2026
Data through Q1 2026 · filed May 19, 2026
15 of 55

Famous investor activity in Personalis, Inc. (PSNL)

Personalis, Inc. (PSNL) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Chen Richard · Officer Sell −$1.5M
Price $15.15 Qty −100K Owned 174K ΔOwn −36.5% Trade date Jul 15, 2026 Filed date Jul 15, 2026
Chen Richard Officer Sell $15.15 −100K −$1.5M 174K −36.5% Jul 15, 2026 Jul 15, 2026
Chen Richard · Officer 2 operations 0
Price $2.44 Owned 0 Trade date Jul 15, 2026 Filed date Jul 15, 2026
Chen Richard Officer 2 operations $2.44 0 0 Jul 15, 2026 Jul 15, 2026
Hall Christopher M. · Director Sell −$1.5M
Price $15.08 Qty −100K Owned 236K ΔOwn −29.8% Trade date Jul 9, 2026 Filed date Jul 9, 2026
Hall Christopher M. Director Sell $15.08 −100K −$1.5M 236K −29.8% Jul 9, 2026 Jul 9, 2026
Hall Christopher M. · Director 3 operations 0
Price $1.61 Owned 0 Trade date Jul 9, 2026 Filed date Jul 9, 2026
Hall Christopher M. Director 3 operations $1.61 0 0 Jul 9, 2026 Jul 9, 2026
Tachibana Aaron · Officer Sell −$70K
Price $14.00 Qty −5K Owned 199K ΔOwn −2.4% Trade date Jun 29, 2026 Filed date Jun 29, 2026
Tachibana Aaron Officer Sell $14.00 −5K −$70K 199K −2.4% Jun 29, 2026 Jun 29, 2026
Tachibana Aaron · Officer 2 operations 0
Price $5.32 Owned 2K Trade date Jun 29, 2026 Filed date Jun 29, 2026
Tachibana Aaron Officer 2 operations $5.32 0 2K Jun 29, 2026 Jun 29, 2026
Tachibana Aaron · Officer Sell −$675K
Price $13.18 Qty −51K Owned 199K ΔOwn −20.5% Trade date Jun 26, 2026 Filed date Jun 26, 2026
Tachibana Aaron Officer Sell $13.18 −51K −$675K 199K −20.5% Jun 26, 2026 Jun 26, 2026
Tachibana Aaron · Officer 4 operations 0
Price $5.32–$9.16 Owned 7K Trade date Jun 26, 2026 Filed date Jun 26, 2026
Tachibana Aaron Officer 4 operations $5.32–$9.16 0 7K Jun 26, 2026 Jun 26, 2026
Hall Christopher M. · Director Sell −$1.3M
Price $13.15 Qty −100K Owned 236K ΔOwn −29.8% Trade date Jun 26, 2026 Filed date Jun 26, 2026
Hall Christopher M. Director Sell $13.15 −100K −$1.3M 236K −29.8% Jun 26, 2026 Jun 26, 2026
Hall Christopher M. · Director 2 operations 0
Price $1.61 Owned 200K Trade date Jun 26, 2026 Filed date Jun 26, 2026
Hall Christopher M. Director 2 operations $1.61 0 200K Jun 26, 2026 Jun 26, 2026
Tachibana Aaron · Officer Sell −$480K
Price $12.01 Qty −40K Owned 199K Trade date Jun 4, 2026 Filed date Jun 5, 2026
Tachibana Aaron Officer Sell $12.01 −40K −$480K 199K Jun 4, 2026 Jun 5, 2026
Tachibana Aaron · Officer 2 operations 0
Price $9.16 Owned 29K Trade date Jun 4, 2026 Filed date Jun 5, 2026
Tachibana Aaron Officer 2 operations $9.16 0 29K Jun 4, 2026 Jun 5, 2026
Hall Christopher M. · Director Sell −$883K
Price $11.02 Qty −80K Owned 236K Trade date May 29, 2026 Filed date May 29, 2026
Hall Christopher M. Director Sell $11.02 −80K −$883K 236K May 29, 2026 May 29, 2026
Hall Christopher M. · Director 2 operations 0
Price $1.61 Owned 300K Trade date May 29, 2026 Filed date May 29, 2026
Hall Christopher M. Director 2 operations $1.61 0 300K May 29, 2026 May 29, 2026
Tachibana Aaron · Officer Sell −$449K
Price $11.58 Qty −39K Owned 199K Trade date May 29, 2026 Filed date May 29, 2026
Tachibana Aaron Officer Sell $11.58 −39K −$449K 199K May 29, 2026 May 29, 2026
15 of 49
15 of 49 Sign in to continue to older insider transactions.

Personalis, Inc. (PSNL) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Tempus Ai, Inc. 12.7M
% of shares outstanding 19.3% Filing date Aug 20, 2024
Tempus Ai, Inc. 12.7M 19.3% Aug 20, 2024
Ark Investment Management LLC 5.5M
% of shares outstanding 12.0% Filing date Feb 10, 2023
Ark Investment Management LLC 5.5M 12.0% Feb 10, 2023
Lightspeed Venture Partners VIII LP 4.1M
% of shares outstanding 9.2% Filing date Mar 7, 2022
Lightspeed Venture Partners VIII LP 4.1M 9.2% Mar 7, 2022
BlackRock Inc. 3.3M
% of shares outstanding 6.8% Filing date Jan 26, 2024
BlackRock Inc. 3.3M 6.8% Jan 26, 2024
Hirschman Orin 4.0M
% of shares outstanding 6.1% Filing date Aug 19, 2024
Hirschman Orin 4.0M 6.1% Aug 19, 2024
Deep Track Capital, LP 5.8M
% of shares outstanding 5.5% Filing date May 12, 2026
Deep Track Capital, LP 5.8M 5.5% May 12, 2026
Blackrock, Inc. 2.9M
% of shares outstanding 5.1% Filing date Nov 8, 2024
Blackrock, Inc. 2.9M 5.1% Nov 8, 2024
JPMorgan Chase & Co
% of shares outstanding 0.0% Filing date Dec 7, 2023
JPMorgan Chase & Co 0.0% Dec 7, 2023
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Personalis, Inc. (PSNL) ownership FAQ

Who owns PSNL?

133 reporting institutions disclosed PSNL position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.