Vault-13

PERSONALIS INC PSNL

COM · Common Stock · CUSIP 71535D106

Company in Menlo Park, United States

64 institutional holders -3 vs Q2 2023
24,680,81924.7m shares reported held*
50.3% of all shares outstanding*
$30.0mreported value*
7 new 11 added 24 reduced 10 sold out net sold ≈ $1.6m (-1.4m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 49.0m as of 2023-10-30, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.22. Options: 1 managers hold calls ($0 notional), 2 hold puts ($1.2k).

Trends to Q3 2023

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 81Q4 22: 81Q1 23: 64Q2 23: 67Q3 23: 6464Q3 22Q4 22Q1 23Q2 23Q3 23
Numbers
QuarterHolders
Q3 202281
Q4 202281
Q1 202364
Q2 202367
Q3 202364

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
50050Q4 22: 41 bought or addedQ4 22: 42 cut or sold outQ4 22Q1 23: 33 bought or addedQ1 23: 40 cut or sold outQ1 23Q2 23: 25 bought or addedQ2 23: 31 cut or sold outQ2 23Q3 23: 18 bought or addedQ3 23: 34 cut or sold outQ3 23
Numbers
QuarterBought or addedCut or sold out
Q4 20224142
Q1 20233340
Q2 20232531
Q3 20231834

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$50k$100k$150k$200kQ4 22 calls: $2.4kQ4 22 puts: $35.5kQ4 22P/C 14.94Q1 23 calls: $167.5kQ1 23 puts: $24.8kQ1 23P/C 0.15Q2 23 calls: $3.8kQ2 23 puts: $6.6kQ2 23P/C 1.75Q3 23 calls: $0Q3 23 puts: $1.2kQ3 23P/C —
Numbers
QuarterCallsPutsP/C
Q4 2022$2.4k$35.5k14.94
Q1 2023$167.5k$24.8k0.15
Q2 2023$3.8k$6.6k1.75
Q3 2023$0$1.2k—

Biggest buyers

GSA CAPITAL PARTNERS LLP Added +106,824+106.8k
Man Group plc New +106,438+106.4k
RENAISSANCE TECHNOLOGIES LLC Added +100,275+100.3k
Green Alpha Advisors, LLC Added +77,255+77.3k
MILLENNIUM MANAGEMENT LLC Added +69,054+69.1k
Prime Capital Investment Advisors, LLC New +29,409+29.4k
PRUDENTIAL FINANCIAL INC New +28,150+28.1k
PATHSTONE FAMILY OFFICE, LLC Added +22,204+22.2k
Virtu Financial LLC New +18,201+18.2k
HOWLAND CAPITAL MANAGEMENT LLC Added +17,644+17.6k

Biggest sellers

FRED ALGER MANAGEMENT, LLC Sold out -584,779-584.8k
Man Group plc Sold out -269,311-269.3k
Wellington Shields Capital Management, LLC Reduced -221,451-221.5k
ACADIAN ASSET MANAGEMENT LLC Reduced -127,759-127.8k
DIMENSIONAL FUND ADVISORS LP Reduced -111,155-111.2k
Balyasny Asset Management L.P. Sold out -107,358-107.4k
BlackRock Inc. Reduced -65,048-65.0k
JACOBS LEVY EQUITY MANAGEMENT, INC Reduced -62,658-62.7k
JPMORGAN CHASE & CO Reduced -50,277-50.3k
CITADEL ADVISORS LLC Reduced -42,712-42.7k

Biggest calls

Biggest puts

CITADEL ADVISORS LLC Reduced $1.2k1.0k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Merck & Co., Inc. 13G · passive investor new · filed 2024-12-23 16.5% new 14.0m≈ $188.2m 2024-12-23
Tempus AI, Inc. 13D · may seek influence -1.9 pts · filed 2026-07-21
Stated purposeMerger Agreement Following conclusion of confidential preliminary discussions between the Issuer and Tempus, and in response to the Issuer's request for Tempus to submit a proposal, on July 19, 2026, Tempus submitted a non-binding proposal to acquire all of the outstanding Common Stock of the Issuer. On July 20, 2026, Tempus entered into an Agreement and Plan of Merger (the "Merger Agreement") with the Issuer, Aviary Development, Inc., a Delaware corporation and a direct, wholly owned subsidiary of Tempus ("Merger Sub I") and Toucan Development, LLC, a Nevada limited liability company and a direct, wholly owned subsidiary of Tempus ("Merger Sub II" and, together with Merger Sub I, the "Merger Subs"). Pursuant to the Merger Agreement, and upon the terms and subject to the conditions therei… Full filing
12.6% -1.9 pts 13.2m≈ $176.7m 2026-07-21
ARK Investment Management LLC 13G · institution -1.4 pts · filed 2025-05-14 8.1% -1.4 pts 7.2m≈ $96.3m 2025-05-14
BlackRock, Inc. 13G · institution +2.4 pts · filed 2026-07-29 5.9% +2.4 pts 6.2m≈ $82.7m 2026-07-29
AMERIPRISE FINANCIAL INC 13G · institution -1.3 pts · filed 2026-08-14 5.8% -1.3 pts 6.1m≈ $81.6m 2026-08-14

Fell to 5% or below in the last year: KEYWELL BRADLEY A (3.5%, 2026-10-28), Deep Track Capital, LP (3.8%, 2026-08-14), Lightspeed Venture Partners Select IV, L.P. (2.0%, 2026-06-10), T. Rowe Price Investment Management, Inc. (4.5%, 2026-04-08), HIRSCHMAN ORIN (3.8%, 2026-01-29)

Insider purchases and sales in Q3 2023

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 21: 0 buyingQ4 21: 3 sellingQ1 22: 0 buyingQ1 22: 3 sellingQ1 22Q2 22: 0 buyingQ2 22: 4 sellingQ3 22: 0 buyingQ3 22: 2 sellingQ3 22Q4 22: 0 buyingQ4 22: 3 sellingQ1 23: 0 buyingQ1 23: 2 sellingQ1 23Q2 23: 0 buyingQ2 23: 3 sellingQ3 23: 0 buyingQ3 23: 2 sellingQ3 23
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20210—3$4.8m—
Q1 20220—3——
Q2 20220—4$113.9k—
Q3 20220—2$35.3k—
Q4 20220—3$58.5k—
Q1 20230—2$17.8k—
Q2 20230—3$47.3k—
Q3 20230—2$2.6k—
DateInsiderTradeSharesPrice ValueTheir holding
2023-07-31 Tachibana Aaron CFO and COO Sold 662 $2.26 $1.5k662 shares -<1%
2023-07-31 Chen Richard Chief Medical Officer and EVP Sold 485 $2.26 $1.1k485 shares -<1%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 ARK Investment Management LLC 0.05% of their portfolio ST. PETERSBURG, FL 5,719,4275.7m $6.9m $6.9m 0.05% Reduced -16.7k -16,736
2 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 3,536,1173.5m $4.3m $4.3m 0.00% Reduced -50.3k -50,277
3 BlackRock Inc. 0.00% of their portfolio New York, NY 3,329,8783.3m $4.0m $4.0m 0.00% Reduced -65.0k -65,048
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,065,6012.1m $2.5m $2.5m 0.00% Unchanged
5 Alyeska Investment Group, L.P. 0.01% of their portfolio CHICAGO, IL 1,245,6681.2m $1.5m $1.5m 0.01% Unchanged
6 Sumitomo Mitsui Trust Group, Inc. 0.00% of their portfolio CHIYODA-KU, TOKYO, M0 1,083,6851.1m $1.3m $1.3m 0.00% Unchanged
7 Amova Asset Management Americas, Inc. 0.02% of their portfolio New York, NY 1,083,6851.1m $1.3m $1.3m 0.02% Unchanged
8 Wellington Shields Capital Management, LLC 0.11% of their portfolio NEW YORK, NY 657,737657.7k $795.9k $795.9k 0.11% Reduced -221.5k -221,451
9 Wellington Shields & Co., LLC 0.18% of their portfolio NEW YORK, NY 604,267604.3k $731.2k $731.2k 0.18% Reduced -13.1k -13,144
10 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 552,475552.5k $668.0k $668.0k 0.00% Added +100.3k +100,275
11 JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio FLORHAM PARK, NJ 444,903444.9k $538.3k $538.3k 0.00% Reduced -62.7k -62,658
12 STATE OF MICHIGAN RETIREMENT SYSTEM 0.00% of their portfolio EAST LANSING, MI 443,798443.8k $537.0k $537.0k 0.00% Unchanged
13 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 386,341386.3k $467.5k $467.5k 0.00% Reduced -31.3k -31,321
14 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 375,137375.1k $452.0k $452.0k 0.00% Reduced -127.8k -127,759
15 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 371,898371.9k $450.1k $450.1k 0.00% Added +6.2k +6,179
16 Pacific Heights Asset Management LLC 0.04% of their portfolio San Francisco, CA 310,000310.0k $375.1k $375.1k 0.04% Unchanged
17 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 217,338217.3k $263.0k $263.0k 0.00% Reduced -111.2k -111,155
18 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 194,139194.1k $234.9k $234.9k 0.00% Reduced -6.4k -6,442
19 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio HOUSTON, TX 154,500154.5k $186.9k $186.9k 0.00% Unchanged
20 Bruce & Co., Inc. 0.06% of their portfolio CHICAGO, IL 150,000150.0k $181.5k $181.5k 0.06% Unchanged
21 GSA CAPITAL PARTNERS LLP 0.01% of their portfolio LONDON, X0 137,358137.4k $166.0k $166.0k 0.01% Added +106.8k +106,824
22 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 130,242130.2k $157.6k $157.6k 0.00% Unchanged
23 Green Alpha Advisors, LLC 0.12% of their portfolio NIWOT, CO 127,164127.2k $153.9k $153.9k 0.12% Added +77.3k +77,255
24 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 123,600123.6k $149.6k $149.6k 0.00% Reduced -39.5k -39,500
25 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 122,306122.3k $148.0k $148.0k 0.00% Reduced -42.7k -42,712
26 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 114,894114.9k $139.0k $139.0k 0.00% Added +69.1k +69,054
27 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 108,707108.7k $131.5k $131.5k 0.00% Reduced -5.8k -5,783
28 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 107,290107.3k $129.8k $129.8k 0.00% Reduced -29.6k -29,625
29 Man Group plc 0.00% of their portfolio LONDON, X0 106,438106.4k $128.8k $128.8k 0.00% New
30 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 86,59186.6k $104.8k $104.8k 0.00% Reduced -2.9k -2,886
31 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 75,89175.9k $92.0k $92.0k 0.00% Reduced -18.9k -18,932
32 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 60,10060.1k $73.0k $73.0k 0.00% Unchanged
33 HSBC HOLDINGS PLC 0.00% of their portfolio LONDON, X0 45,46545.5k $54.6k $54.6k 0.00% Unchanged
34 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 45,02445.0k $54.5k $54.5k 0.00% Unchanged
35 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 44,81144.8k $54.2k $54.2k 0.00% Reduced -2.5k -2,496
36 HOWLAND CAPITAL MANAGEMENT LLC 0.00% of their portfolio BOSTON, MA 37,84437.8k $45.8k $45.8k 0.00% Added +17.6k +17,644
37 PATHSTONE FAMILY OFFICE, LLC 0.00% of their portfolio ENGLEWOOD, NJ 37,08137.1k $44.9k $44.9k 0.00% Added +22.2k +22,204
38 Prime Capital Investment Advisors, LLC 0.00% of their portfolio OVERLAND PARK, KS 29,40929.4k $35.6k $35.6k 0.00% New
39 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 28,15028.1k $34.1k $34.1k 0.00% New
40 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 27,97328.0k $33.8k $33.8k 0.00% Reduced -353 -353
41 Board of Trustees of The Leland Stanford Junior University 0.00% of their portfolio STANFORD, CA 25,26225.3k $30.6k $30.6k 0.00% Unchanged
42 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 23,85423.9k $28.9k $28.9k 0.00% Reduced -1.3k -1,308
43 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 22,94122.9k $27.8k $27.8k 0.00% Unchanged
44 IEQ CAPITAL, LLC 0.00% of their portfolio Foster City, CA 22,00022.0k $26.6k $26.6k 0.00% Unchanged
45 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 21,60021.6k $26.1k $26.1k 0.00% Reduced -26.8k -26,800
46 UBS Group AG 0.00% of their portfolio ZURICH, V8 20,61020.6k $24.9k $24.9k 0.00% Added +3.0k +2,996
47 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 18,44118.4k $22.0k $22.0k 0.00% Reduced -1.5k -1,463
48 Virtu Financial LLC 0.00% of their portfolio New York, NY 18,20118.2k $22.0k $22.0k 0.00% New
49 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 16,52216.5k $20.0k $20.0k 0.00% Unchanged
50 HoyleCohen, LLC 0.00% of their portfolio SAN DIEGO, CA 15,37315.4k $18.6k $18.6k 0.00% Unchanged
51 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 13,59313.6k $16.4k $16.4k 0.00% Reduced -21.0k -20,982
52 Bragg Financial Advisors, Inc 0.00% of their portfolio CHARLOTTE, NC 12,64412.6k $15.3k $15.3k 0.00% Unchanged
53 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 12,29912.3k $14.9k $14.9k 0.00% New
54 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 6,7016.7k $8.1k $8.1k 0.00% Added +487 +487
55 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 5,6135.6k $6.8k $6.8k 0.00% Reduced -475 -475
56 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 3,7093.7k $4.5k $4.5k 0.00% Unchanged
57 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3,1293.1k $3.8k $3.8k 0.00% Reduced -218 -218
58 WR Wealth Planners, LLC 0.00% of their portfolio COLUMBIA, MO 1,2001.2k $1.5k $1.5k 0.00% Unchanged
59 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 283283 $342 $342 0.00% Added +7 +7
60 COMERICA BANK 0.00% of their portfolio DALLAS, TX 205205 $248 $248 0.00% New
61 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 135135 $163 $163 0.00% Added +3 +3
62 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 99 $11 $11 0.00% New
63 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 11 $1 $1 0.00% Unchanged
64 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged