Vault-13

PERSONALIS INC PSNL

COM · Common Stock · CUSIP 71535D106

Company in Menlo Park, United States

67 institutional holders +3 vs Q1 2023
26,078,27926.1m shares reported held*
53.7% of all shares outstanding*
$49.0mreported value*
8 new 17 added 26 reduced 5 sold out net sold ≈ $2.1m (-1.0m 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: 48.5m as of 2023-08-01, 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 ≈ $1.88. Options: 2 managers hold calls ($3.8k notional), 2 hold puts ($6.6k).

Trends to Q2 2023

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 81Q4 22: 81Q1 23: 64Q2 23: 6767Q3 22Q4 22Q1 23Q2 23
Numbers
QuarterHolders
Q3 202281
Q4 202281
Q1 202364
Q2 202367

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 23
Numbers
QuarterBought or addedCut or sold out
Q4 20224142
Q1 20233340
Q2 20232531

Calls vs puts

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

CallsPuts
$0$50k$100k$150k$200kQ3 22 calls: $136.0kQ3 22 puts: $63.0kQ3 22P/C 0.46Q4 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 1.75
Numbers
QuarterCallsPutsP/C
Q3 2022$136.0k$63.0k0.46
Q4 2022$2.4k$35.5k14.94
Q1 2023$167.5k$24.8k0.15
Q2 2023$3.8k$6.6k1.75

Biggest buyers

FRED ALGER MANAGEMENT, LLC Added +375,627+375.6k
Man Group plc New +269,311+269.3k
JACOBS LEVY EQUITY MANAGEMENT, INC Added +216,441+216.4k
DIMENSIONAL FUND ADVISORS LP Added +114,352+114.4k
MORGAN STANLEY Added +80,055+80.1k
Amova Asset Management Americas, Inc. Added +64,972+65.0k
Sumitomo Mitsui Trust Group, Inc. Added +64,972+65.0k
BRIDGEWAY CAPITAL MANAGEMENT, LLC Added +39,000+39.0k
GSA CAPITAL PARTNERS LLP New +30,534+30.5k
HRT FINANCIAL LP New +19,904+19.9k

Biggest sellers

Balyasny Asset Management L.P. Reduced -897,252-897.3k
Wellington Shields & Co., LLC Reduced -395,902-395.9k
UBS Group AG Reduced -246,466-246.5k
ACADIAN ASSET MANAGEMENT LLC Reduced -144,328-144.3k
Man Group plc Sold out -105,184-105.2k
MILLENNIUM MANAGEMENT LLC Reduced -103,629-103.6k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Sold out -97,479-97.5k
JANE STREET GROUP, LLC Sold out -90,494-90.5k
TWO SIGMA ADVISERS, LP Reduced -60,300-60.3k
CITADEL ADVISORS LLC Reduced -53,813-53.8k

Biggest calls

CITADEL ADVISORS LLC Reduced $3.8k2.0k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Reduced $6.6k3.5k 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 Q2 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
404Q3 21: 0 buyingQ3 21: 0 sellingQ4 21: 0 buyingQ4 21: 3 sellingQ4 21Q1 22: 0 buyingQ1 22: 3 sellingQ2 22: 0 buyingQ2 22: 4 sellingQ2 22Q3 22: 0 buyingQ3 22: 2 sellingQ4 22: 0 buyingQ4 22: 3 sellingQ4 22Q1 23: 0 buyingQ1 23: 2 sellingQ2 23: 0 buyingQ2 23: 3 sellingQ2 23
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20210—0——
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—
DateInsiderTradeSharesPrice ValueTheir holding
2023-06-16 Tachibana Aaron CFO and COO Sold 6,904 $2.07 $14.3k6.9k shares -3%
2023-06-16 Chen Richard Chief Medical Officer and EVP Sold 4,817 $2.07 $10.0k4.8k shares -4%
2023-06-16 Moore Stephen Michael General Counsel Sold 1,509 $2.07 $3.1k1.5k shares -2%
2023-05-17 Moore Stephen Michael General Counsel Sold 1,781 $1.98 $3.5k1.8k shares -2%
2023-05-17 Tachibana Aaron CFO and COO Sold 1,389 $1.98 $2.8k1.4k shares -1%
2023-05-17 Chen Richard Chief Medical Officer and EVP Sold 971 $1.98 $1.9k971 shares -1%
2023-05-02 Moore Stephen Michael General Counsel Sold 5,102 $2.29 $11.7k5.1k shares -6%

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, Q2 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 ARK Investment Management LLC 0.07% of their portfolio ST. PETERSBURG, FL 5,736,1635.7m $10.8m $10.8m 0.07% Reduced -44.2k -44,201
2 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 3,586,3943.6m $6.7m $6.7m 0.00% Reduced -41.3k -41,327
3 BlackRock Inc. 0.00% of their portfolio New York, NY 3,394,9263.4m $6.4m $6.4m 0.00% Reduced -15.9k -15,889
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,065,6012.1m $3.9m $3.9m 0.00% Unchanged
5 Alyeska Investment Group, L.P. 0.02% of their portfolio CHICAGO, IL 1,245,6681.2m $2.3m $2.3m 0.02% Unchanged
6 Sumitomo Mitsui Trust Group, Inc. 0.00% of their portfolio CHIYODA-KU, TOKYO, M0 1,083,6851.1m $2.0m $2.0m 0.00% Added +65.0k +64,972
7 Amova Asset Management Americas, Inc. 0.02% of their portfolio New York, NY 1,083,6851.1m $2.0m $2.0m 0.02% Added +65.0k +64,972
8 Wellington Shields Capital Management, LLC 0.20% of their portfolio NEW YORK, NY 879,188879.2k $1.7m $1.7m 0.20% Reduced -3.8k -3,750
9 Wellington Shields & Co., LLC 0.27% of their portfolio NEW YORK, NY 617,411617.4k $1.2m $1.2m 0.27% Reduced -395.9k -395,902
10 FRED ALGER MANAGEMENT, LLC 0.01% of their portfolio NEW YORK, NY 584,779584.8k $1.1m $1.1m 0.01% Added +375.6k +375,627
11 JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio FLORHAM PARK, NJ 507,561507.6k $954.2k $954.2k 0.01% Added +216.4k +216,441
12 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 502,896502.9k $944.0k $944.0k 0.00% Reduced -144.3k -144,328
13 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 452,200452.2k $850.0k $850.0k 0.00% Added +5.0k +5,000
14 STATE OF MICHIGAN RETIREMENT SYSTEM 0.01% of their portfolio EAST LANSING, MI 443,798443.8k $834.3k $834.3k 0.01% Unchanged
15 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 417,662417.7k $785.2k $785.2k 0.00% Added +10.8k +10,771
16 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 365,719365.7k $687.6k $687.6k 0.00% Reduced -20.8k -20,782
17 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 328,493328.5k $617.6k $617.6k 0.00% Added +114.4k +114,352
18 Pacific Heights Asset Management LLC 0.05% of their portfolio San Francisco, CA 310,000310.0k $582.8k $582.8k 0.05% Unchanged
19 Man Group plc 0.00% of their portfolio LONDON, X0 269,311269.3k $506.3k $506.3k 0.00% New
20 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 200,581200.6k $377.1k $377.1k 0.00% Added +17.2k +17,189
21 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 165,018165.0k $310.2k $310.2k 0.00% Reduced -53.8k -53,813
22 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 163,100163.1k $306.6k $306.6k 0.00% Reduced -60.3k -60,300
23 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio HOUSTON, TX 154,500154.5k $290.5k $290.5k 0.01% Added +39.0k +39,000
24 Bruce & Co., Inc. 0.08% of their portfolio CHICAGO, IL 150,000150.0k $279.0k $279.0k 0.08% Unchanged
25 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 136,915136.9k $257.4k $257.4k 0.00% Added +80.1k +80,055
26 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 130,242130.2k $244.9k $244.9k 0.00% Unchanged
27 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 114,490114.5k $215.2k $215.2k 0.00% Reduced -28.3k -28,320
28 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 107,358107.4k $201.8k $201.8k 0.00% Reduced -897.3k -897,252
29 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 94,82394.8k $178.0k $178.0k 0.00% Added +18.9k +18,932
30 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 89,47789.5k $168.2k $168.2k 0.00% Added +1.8k +1,808
31 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 60,10060.1k $113.0k $113.0k 0.00% Unchanged
32 Green Alpha Advisors, LLC 0.06% of their portfolio NIWOT, CO 49,90949.9k $93.8k $93.8k 0.06% Reduced -20.6k -20,617
33 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 48,40048.4k $91.0k $91.0k 0.00% Reduced -10.2k -10,200
34 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 47,30747.3k $88.9k $88.9k 0.00% Reduced -28.3k -28,272
35 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 45,84045.8k $86.2k $86.2k 0.00% Reduced -103.6k -103,629
36 HSBC HOLDINGS PLC 0.00% of their portfolio LONDON, X0 45,46545.5k $85.7k $85.7k 0.00% Reduced -7.8k -7,775
37 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 45,02445.0k $84.6k $84.6k 0.00% Reduced -30.5k -30,509
38 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 34,57534.6k $65.0k $65.0k 0.00% Reduced -9.3k -9,313
39 GSA CAPITAL PARTNERS LLP 0.01% of their portfolio LONDON, X0 30,53430.5k $57.0k $57.0k 0.01% New
40 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 28,32628.3k $53.3k $53.3k 0.00% Reduced -95 -95
41 Board of Trustees of The Leland Stanford Junior University 0.00% of their portfolio STANFORD, CA 25,26225.3k $47.5k $47.5k 0.00% Added +12.6k +12,631
42 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 25,16225.2k $47.3k $47.3k 0.00% Added +974 +974
43 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 22,94122.9k $43.1k $43.1k 0.00% Unchanged
44 IEQ CAPITAL, LLC 0.00% of their portfolio Foster City, CA 22,00022.0k $41.4k $41.4k 0.00% Unchanged
45 HOWLAND CAPITAL MANAGEMENT LLC 0.00% of their portfolio BOSTON, MA 20,20020.2k $38.0k $38.0k 0.00% Unchanged
46 HRT FINANCIAL LP 0.00% of their portfolio NEW YORK, NY 19,90419.9k $37.0k $37.0k 0.00% New
47 UBS Group AG 0.00% of their portfolio ZURICH, V8 17,61417.6k $33.1k $33.1k 0.00% Reduced -246.5k -246,466
48 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 16,52216.5k $31.1k $31.1k 0.00% Unchanged
49 HoyleCohen, LLC 0.00% of their portfolio SAN DIEGO, CA 15,37315.4k $28.9k $28.9k 0.00% Unchanged
50 PATHSTONE FAMILY OFFICE, LLC 0.00% of their portfolio ENGLEWOOD, NJ 14,87714.9k $28.0k $28.0k 0.00% Reduced -891 -891
51 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 13,07213.1k $24.6k $24.6k 0.00% New
52 Bragg Financial Advisors, Inc 0.00% of their portfolio CHARLOTTE, NC 12,64412.6k $23.8k $23.8k 0.00% New
53 BSW Wealth Partners 0.00% of their portfolio BOULDER, CO 10,07810.1k $18.9k $18.9k 0.00% Added +69 +69
54 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 6,2146.2k $11.7k $11.7k 0.00% Added +261 +261
55 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 6,0886.1k $11.4k $11.4k 0.00% Reduced -494 -494
56 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 3,7093.7k $7.0k $7.0k 0.00% New
57 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3,3473.3k $6.3k $6.3k 0.00% Reduced -6.6k -6,630
58 FMR LLC 0.00% of their portfolio BOSTON, MA 3,2213.2k $6.1k $6.1k 0.00% Reduced -23.7k -23,653
59 WR Wealth Planners, LLC 0.00% of their portfolio COLUMBIA, MO 1,2001.2k $2.3k $2.3k 0.00% Reduced -500 -500
60 First Horizon Advisors, Inc. 0.00% of their portfolio MEMPHIS, TN 900900 $1.7k $1.7k 0.00% New
61 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 385385 $0 $0 0.00% Reduced -666 -666
62 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 276276 $519 $519 0.00% Added +15 +15
63 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 132132 $248 $248 0.00% Unchanged
64 Bogart Wealth, LLC 0.00% of their portfolio MCLEAN, VA 3131 $58 $58 0.00% Unchanged
65 Financial Gravity Asset Management, Inc. 0.00% of their portfolio Lakeway, TX 22 $8 $8 0.00% New
66 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 11 $2 $2 0.00% Unchanged
67 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged