Vault-13

PERSONALIS INC PSNL

COM · Common Stock · CUSIP 71535D106

Company in Menlo Park, United States

81 institutional holders +0 vs Q3 2022
27,820,07227.8m shares reported held*
59.5% of all shares outstanding*
$55.1mreported value*
15 new 26 added 27 reduced 15 sold out net sold ≈ $1.0m (-570.3k 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: 46.7m as of 2023-02-14, 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 ≈ $1.98. Options: 2 managers hold calls ($2.4k notional), 3 hold puts ($35.5k).

Trends to Q4 2022

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 81Q4 22: 8181Q3 22Q4 22
Numbers
QuarterHolders
Q3 202281
Q4 202281

Calls vs puts

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

CallsPuts
$0$50k$100k$150kQ3 22 calls: $136.0kQ3 22 puts: $63.0kQ3 22P/C 0.46Q4 22 calls: $2.4kQ4 22 puts: $35.5kQ4 22P/C 14.94
Numbers
QuarterCallsPutsP/C
Q3 2022$136.0k$63.0k0.46
Q4 2022$2.4k$35.5k14.94

Biggest buyers

BlackRock Inc. Added +273,368+273.4k
ACADIAN ASSET MANAGEMENT LLC Added +258,461+258.5k
D. E. Shaw & Co., Inc. Added +257,266+257.3k
BANK OF MONTREAL /CAN/ New +139,800+139.8k
Man Group plc New +138,214+138.2k
272 Capital LP New +125,670+125.7k
Anson Funds Management LP New +104,972+105.0k
UBS Group AG Added +100,471+100.5k
Wellington Shields & Co., LLC Added +86,947+86.9k
Prosight Management, LP New +58,668+58.7k

Biggest sellers

MILLENNIUM MANAGEMENT LLC Reduced -630,315-630.3k
Swedbank AB Sold out -400,250-400.2k
JPMORGAN CHASE & CO Reduced -270,159-270.2k
MARSHALL WACE, LLP Reduced -215,698-215.7k
MORGAN STANLEY Reduced -134,546-134.5k
Mirae Asset Global Investments Co., Ltd. Sold out -115,035-115.0k
Wellington Shields Capital Management, LLC Reduced -112,227-112.2k
JACOBS LEVY EQUITY MANAGEMENT, INC Reduced -74,828-74.8k
GABELLI FUNDS LLC Sold out -72,200-72.2k
CAXTON ASSOCIATES LP Reduced -61,670-61.7k

Biggest calls

GROUP ONE TRADING LLC Added $2.4k1.2k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Added $30.5k15.4k shares
SIMPLEX TRADING, LLC Reduced $5.0k2.7k 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), Red Sky Ventures LLC (4.7%, 2025-11-13)

Insider purchases and sales in Q4 2022

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
404Q1 21: 0 buyingQ1 21: 0 sellingQ2 21: 0 buyingQ2 21: 0 sellingQ2 21Q3 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 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q1 20210—0——
Q2 20210—0——
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—
DateInsiderTradeSharesPrice ValueTheir holding
2022-12-20 Tachibana Aaron Chief Financial Officer Sold 3,843 $1.92 $7.4k3.8k shares -2%
2022-12-20 Chen Richard Chief Medical Officer Sold 1,750 $1.92 $3.4k1.8k shares -1%
2022-12-15 Chen Richard Chief Medical Officer Sold 7,177 $2.50 $17.9k7.2k shares -5%
2022-12-15 Tachibana Aaron Chief Financial Officer Sold 7,177 $2.50 $17.9k7.2k shares -3%
2022-12-15 Moore Stephen Michael General Counsel Sold 1,930 $2.50 $4.8k1.9k shares -2%
2022-12-02 Tachibana Aaron Chief Financial Officer Sold 4,360 $2.60 $11.3k4.4k shares -2%
2022-12-02 Chen Richard Chief Medical Officer Sold 440 $2.60 $1.1k440 shares -<1%
2022-11-16 Moore Stephen Michael General Counsel Sold 2,045 $2.71 $5.5k2.0k shares -2%
2022-11-16 Chen Richard Chief Medical Officer Sold 1,295 $2.71 $3.5k1.3k shares -1%
2022-11-16 Tachibana Aaron Chief Financial Officer Sold 1,294 $2.71 $3.5k1.3k 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, Q4 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 ARK Investment Management LLC 0.09% of their portfolio ST. PETERSBURG, FL 5,500,4005.5m $10.9m $10.9m 0.09% Added +53.9k +53,888
2 BlackRock Inc. 0.00% of their portfolio New York, NY 3,558,9133.6m $7.0m $7.0m 0.00% Added +273.4k +273,368
3 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 3,503,2393.5m $6.9m $6.9m 0.00% Reduced -270.2k -270,159
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,035,0002.0m $4.0m $4.0m 0.00% Reduced -28.9k -28,888
5 Alyeska Investment Group, L.P. 0.02% of their portfolio CHICAGO, IL 1,161,6721.2m $2.3m $2.3m 0.02% Added +50.9k +50,907
6 Wellington Shields & Co., LLC 0.46% of their portfolio NEW YORK, NY 1,013,3131.0m $2.0m $2.0m 0.46% Added +86.9k +86,947
7 Sumitomo Mitsui Trust Group, Inc. 0.00% of their portfolio CHIYODA-KU, TOKYO, M0 889,870889.9k $1.8m $1.8m 0.00% Reduced -60.2k -60,231
8 Amova Asset Management Americas, Inc. 0.03% of their portfolio New York, NY 889,870889.9k $1.8m $1.8m 0.03% Reduced -60.2k -60,231
9 Wellington Shields Capital Management, LLC 0.21% of their portfolio NEW YORK, NY 863,138863.1k $1.7m $1.7m 0.21% Reduced -112.2k -112,227
10 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 857,647857.6k $1.7m $1.7m 0.00% Reduced -630.3k -630,315
11 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 735,153735.2k $1.5m $1.5m 0.00% Added +257.3k +257,266
12 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 642,911642.9k $1.3m $1.3m 0.00% Reduced -45.4k -45,424
13 ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio Boston, MA 538,864538.9k $1.1m $1.1m 0.01% Added +258.5k +258,461
14 STATE OF MICHIGAN RETIREMENT SYSTEM 0.01% of their portfolio EAST LANSING, MI 443,798443.8k $878.7k $878.7k 0.01% Unchanged
15 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 368,345368.3k $729.0k $729.0k 0.00% Added +6.4k +6,379
16 Monarch Partners Asset Management LLC 0.19% of their portfolio BOSTON, MA 321,406321.4k $636.4k $636.4k 0.19% Added +2.3k +2,343
17 Pacific Heights Asset Management LLC 0.06% of their portfolio San Francisco, CA 310,000310.0k $613.8k $613.8k 0.06% Unchanged
18 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 290,500290.5k $575.2k $575.2k 0.00% Reduced -19.6k -19,600
19 UBS Group AG 0.00% of their portfolio ZURICH, V8 261,260261.3k $517.3k $517.3k 0.00% Added +100.5k +100,471
20 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 236,160236.2k $467.6k $467.6k 0.00% Added +27.9k +27,945
21 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 221,823221.8k $439.2k $439.2k 0.00% Reduced -215.7k -215,698
22 FRED ALGER MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 209,100209.1k $414.0k $414.0k 0.00% Reduced -15 -15
23 JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio FLORHAM PARK, NJ 201,225201.2k $398.4k $398.4k 0.00% Reduced -74.8k -74,828
24 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 159,391159.4k $315.0k $315.0k 0.00% Added +52.0k +51,987
25 GSA CAPITAL PARTNERS LLP 0.04% of their portfolio LONDON, X0 156,574156.6k $310.0k $310.0k 0.04% Added +5.9k +5,898
26 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 139,800139.8k $278.2k $278.2k 0.00% New
27 Man Group plc 0.00% of their portfolio LONDON, X0 138,214138.2k $273.7k $273.7k 0.00% New
28 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 137,850137.8k $272.9k $272.9k 0.00% Added +58.0k +58,013
29 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 127,765127.8k $253.0k $253.0k 0.00% Added +18.3k +18,332
30 272 Capital LP 0.11% of their portfolio DALLAS, TX 125,670125.7k $248.8k $248.8k 0.11% New
31 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 118,142118.1k $233.9k $233.9k 0.00% Unchanged
32 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio HOUSTON, TX 115,500115.5k $228.7k $228.7k 0.01% Unchanged
33 TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio STAMFORD, CT 114,512114.5k $227.0k $227.0k 0.01% Added +23.9k +23,870
34 Anson Funds Management LP 0.05% of their portfolio DALLAS, TX 104,972105.0k $207.8k $207.8k 0.05% New
35 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 89,22689.2k $176.7k $176.7k 0.00% Added +8.7k +8,740
36 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 88,90088.9k $176.0k $176.0k 0.00% Unchanged
37 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 84,20084.2k $166.7k $166.7k 0.00% Reduced -373 -373
38 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 77,60877.6k $153.0k $153.0k 0.00% Added +1.7k +1,714
39 Green Alpha Advisors, LLC 0.11% of their portfolio NIWOT, CO 66,61666.6k $132.0k $132.0k 0.11% Added +977 +977
40 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 65,42865.4k $129.5k $129.5k 0.00% Reduced -134.5k -134,546
41 Prosight Management, LP 0.06% of their portfolio DALLAS, TX 58,66858.7k $116.2k $116.2k 0.06% New
42 HSBC HOLDINGS PLC 0.00% of their portfolio LONDON, X0 53,24053.2k $104.3k $104.3k 0.00% Added +23.2k +23,165
43 BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 51,12951.1k $101.2k $101.2k 0.00% New
44 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 50,96551.0k $100.9k $100.9k 0.00% Reduced -54.0k -54,045
45 Bruce & Co., Inc. 0.03% of their portfolio CHICAGO, IL 50,00050.0k $99.0k $99.0k 0.03% New
46 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 48,12548.1k $95.3k $95.3k 0.00% Added +12.5k +12,492
47 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 45,02445.0k $89.1k $89.1k 0.00% First filing
48 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 44,27844.3k $87.7k $87.7k 0.00% Added +28.7k +28,719
49 Ergoteles LLC 0.00% of their portfolio NEW YORK, NY 37,96238.0k $75.2k $75.2k 0.00% New
50 PATHSTONE FAMILY OFFICE, LLC 0.00% of their portfolio ENGLEWOOD, NJ 34,61834.6k $68.5k $68.5k 0.00% Reduced -912 -912
51 Cubist Systematic Strategies, LLC 0.00% of their portfolio STAMFORD, CT 28,67428.7k $56.8k $56.8k 0.00% Reduced -6.4k -6,385
52 Board of Trustees of The Leland Stanford Junior University 0.01% of their portfolio STANFORD, CA 25,26225.3k $50.0k $50.0k 0.01% Unchanged
53 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 25,05225.1k $49.6k $49.6k 0.00% Reduced -6.4k -6,412
54 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 24,87024.9k $49.2k $49.2k 0.00% Added +13.6k +13,640
55 CAXTON ASSOCIATES LP 0.00% of their portfolio NEW YORK, NY 24,52424.5k $48.6k $48.6k 0.00% Reduced -61.7k -61,670
56 Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio VANCOUVER, A1 22,97923.0k $45.5k $45.5k 0.00% Reduced -41.5k -41,456
57 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 22,94122.9k $45.4k $45.4k 0.00% New
58 IEQ CAPITAL, LLC 0.00% of their portfolio Foster City, CA 22,00022.0k $43.6k $43.6k 0.00% Unchanged
59 ALGERT GLOBAL LLC 0.00% of their portfolio SAN FRANCISCO, CA 20,25420.3k $40.1k $40.1k 0.00% Reduced -36.6k -36,620
60 HOWLAND CAPITAL MANAGEMENT LLC 0.00% of their portfolio BOSTON, MA 20,20020.2k $40.0k $40.0k 0.00% Unchanged
61 PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio COLUMBUS, OH 16,92616.9k $34.0k $34.0k 0.00% Reduced -8.6k -8,565
62 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 16,80016.8k $34.0k $34.0k 0.00% Reduced -11.6k -11,602
63 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 16,52216.5k $32.7k $32.7k 0.00% Unchanged
64 HoyleCohen, LLC 0.00% of their portfolio SAN DIEGO, CA 15,37315.4k $30.4k $30.4k 0.00% Unchanged
65 Engineers Gate Manager LP 0.00% of their portfolio NEW YORK, NY 15,16115.2k $30.0k $30.0k 0.00% New
66 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 14,99915.0k $29.7k $29.7k 0.00% Reduced -2.5k -2,514
67 PRELUDE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 12,07412.1k $23.9k $23.9k 0.00% Reduced -3.4k -3,400
68 Orion Porfolio Solutions, LLC 0.00% of their portfolio OMAHA, NE 10,44310.4k $20.7k $20.7k 0.00% New
69 FMR LLC 0.00% of their portfolio BOSTON, MA 8,9148.9k $17.6k $17.6k 0.00% New
70 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 6,5826.6k $13.0k $13.0k 0.00% Reduced -33 -33
71 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 3,4573.5k $7.1k $7.1k 0.00% Added +691 +691
72 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 2,9663.0k $5.9k $5.9k 0.00% Added +1.4k +1,391
73 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 2,3402.3k $4.0k $4.0k 0.00% Reduced -15.6k -15,617
74 Quantbot Technologies LP 0.00% of their portfolio NEW YORK, NY 1,1441.1k $2.3k $2.3k 0.00% New
75 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 578578 $1.1k $1.1k 0.00% Added +28 +28
76 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 570570 $1.1k $1.1k 0.00% Added +203 +203
77 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 257257 $509 $509 0.00% Reduced -4.9k -4,939
78 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 124124 $4.0k $4.0k 0.00% New
79 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 100100 $198 $198 0.00% Unchanged
80 Financial Gravity Asset Management, Inc. 0.00% of their portfolio Lakeway, TX 22 $8 $8 0.00% New
81 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged