Vault-13

STANDARD BIOTOOLS INC LAB

COM · Common Stock · CUSIP 34385P108

Company in South San Francisco, United States

73 institutional holders +6 vs Q2 2023
47,423,25347.4m shares reported held*
59.7% of all shares outstanding*
$137.5mreported value*
15 new 16 added 19 reduced 9 sold out net bought ≈ $3.7m (+1.3m 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 ($17.9k this quarter). Holder counts are more reliable. Shares outstanding: 79.4m as of 2023-11-03, 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 ≈ $2.90. Options: 4 managers hold calls ($82.9k notional), 4 hold puts ($98.9k).

Trends to Q3 2023

Institutional holders

Managers reporting a position, each quarter

0255075Q3 22: 66Q4 22: 68Q1 23: 69Q2 23: 67Q3 23: 7373Q3 22Q4 22Q1 23Q2 23Q3 23
Numbers
QuarterHolders
Q3 202266
Q4 202268
Q1 202369
Q2 202367
Q3 202373

Buyers vs sellers

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

Bought or addedCut or sold out
40040Q4 22: 29 bought or addedQ4 22: 32 cut or sold outQ4 22Q1 23: 29 bought or addedQ1 23: 28 cut or sold outQ1 23Q2 23: 24 bought or addedQ2 23: 39 cut or sold outQ2 23Q3 23: 31 bought or addedQ3 23: 28 cut or sold outQ3 23
Numbers
QuarterBought or addedCut or sold out
Q4 20222932
Q1 20232928
Q2 20232439
Q3 20233128

Calls vs puts

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

CallsPuts
$0$100k$200k$300kQ4 22 calls: $36.5kQ4 22 puts: $107.0kQ4 22P/C 2.93Q1 23 calls: $21.6kQ1 23 puts: $254.6kQ1 23P/C 11.76Q2 23 calls: $28.8kQ2 23 puts: $61.8kQ2 23P/C 2.14Q3 23 calls: $82.9kQ3 23 puts: $98.9kQ3 23P/C 1.19
Numbers
QuarterCallsPutsP/C
Q4 2022$36.5k$107.0k2.93
Q1 2023$21.6k$254.6k11.76
Q2 2023$28.8k$61.8k2.14
Q3 2023$82.9k$98.9k1.19

Biggest buyers

Hollow Brook Wealth Management LLC New +1,785,757+1.8m
MORGAN STANLEY Added +1,409,290+1.4m
Balyasny Asset Management L.P. Added +595,020+595.0k
Parkman Healthcare Partners LLC New +500,000+500.0k
Informed Momentum Co LLC New +473,982+474.0k
CITIGROUP INC New +189,791+189.8k
Schonfeld Strategic Advisors LLC New +143,000+143.0k
GEODE CAPITAL MANAGEMENT, LLC Added +69,868+69.9k
Jefferies Financial Group Inc. New +56,400+56.4k
BARCLAYS PLC New +48,194+48.2k

Biggest sellers

BOOTHBAY FUND MANAGEMENT, LLC Reduced -1,096,264-1.1m
Caligan Partners LP Reduced -845,507-845.5k
NEEDHAM INVESTMENT MANAGEMENT LLC Reduced -810,000-810.0k
HighTower Advisors, LLC Reduced -593,616-593.6k
D. E. Shaw & Co., Inc. Reduced -199,099-199.1k
MILLENNIUM MANAGEMENT LLC Reduced -157,666-157.7k
SILVERBACK ASSET MANAGEMENT LLC Reduced -150,000-150.0k
PRIMECAP MANAGEMENT CO/CA/ Reduced -137,837-137.8k
TUDOR INVESTMENT CORP ET AL Sold out -85,058-85.1k
BlackRock Inc. Reduced -72,060-72.1k

Biggest calls

CITADEL ADVISORS LLC Added $29.9k10.3k shares
GROUP ONE TRADING LLC Added $29.0k10.0k shares
SIMPLEX TRADING, LLC Added $24.0k8.3k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

GROUP ONE TRADING LLC Reduced $53.1k18.3k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added $45.5k15.7k shares
CITADEL ADVISORS LLC New $290100 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
Casdin Capital, LLC 13D · may seek influence -0.3 pts · filed 2026-06-09
Stated purposeItem 4 of the Schedule 13D amendment filed on November 28, 2025 is hereby supplemented by the addition of the following: On June 6, 2026, the Issuer, Treeline Biosciences, Inc., a Delaware corporation (the "Company"), and Siri Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of the Issuer ("Merger Sub"), entered into an Agreement and Plan of Merger and Reorganization (the "Merger Agreement"), pursuant to which, among other matters, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into the Company, with the Company continuing as a wholly owned subsidiary of the Issuer and the surviving corporation of the merger (the "Merger"). Upon the terms and subject to the conditions set forth in the Merg… Full filing
23.9% -0.3 pts 93.8m≈ $77.2m 2026-06-09
VIKING GLOBAL INVESTORS LP 13D · may seek influence no change · filed 2026-06-12
Stated purposeThe response to Item 3 of this Schedule 13D is incorporated by reference herein. On June 6, 2026, the Issuer, Treeline Biosciences, Inc., a Delaware corporation ("Treeline"), and Siri Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of the Issuer ("Merger Sub"), entered into an Agreement and Plan of Merger and Reorganization (the "Merger Agreement"), pursuant to which, among other matters, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into Treeline, with Treeline continuing as a wholly owned subsidiary of the Issuer and the surviving corporation of the merger (the "Merger"). Upon the terms and subject to the conditions set forth in the Merger Agreement, at the effective time of the Merger… Full filing
15.0% no change 58.7m≈ $48.3m 2026-06-12
MAK CAPITAL ONE LLC 13G · passive investor filed 2026-08-14 7.3% 28.8m≈ $23.7m 2026-08-14
MAK Capital Fund LP 13G · passive investor +1.5 pts · filed 2026-05-15 6.7% +1.5 pts 26.2m≈ $21.5m 2026-05-15
Long Focus Capital Management, LLC 13G · institution new · filed 2026-08-14 6.0% new 23.5m≈ $19.3m 2026-08-14

Fell to 5% or below in the last year: BlackRock, Inc. (2.0%, 2026-07-30)

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: 0 sellingQ1 22: 0 buyingQ1 22: 0 sellingQ1 22Q2 22: 0 buyingQ2 22: 0 sellingQ3 22: 0 buyingQ3 22: 0 sellingQ3 22Q4 22: 0 buyingQ4 22: 0 sellingQ1 23: 0 buyingQ1 23: 0 sellingQ1 23Q2 23: 3 buyingQ2 23: 0 sellingQ3 23: 0 buyingQ3 23: 0 sellingQ3 23
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20210—0——
Q1 20220—0——
Q2 20220—0——
Q3 20220—0——
Q4 20220—0——
Q1 20230—0——
Q2 20233$2.8m0——
Q3 20230—0——

None reported in Q3 2023.

Holders, Q3 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Caligan Partners LP 11.31% of their portfolio NEW YORK, NY 7,622,4137.6m $22.1m $22.1m 11.31% Reduced -845.5k -845,507
2 Indaba Capital Management, L.P. 6.36% of their portfolio SAN FRANCISCO, CA 7,446,2297.4m $21.6m $21.6m 6.36% Unchanged
3 NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio NEW YORK, NY 4,543,7074.5m $13.2m $13.2m 0.01% Added +38.6k +38,558
4 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 4,453,3504.5m $12.9m $12.9m 0.00% Added +1.4m +1,409,290
5 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 3,974,5264.0m $11.5m $11.5m 0.00% Added +31.6k +31,636
6 PRIMECAP MANAGEMENT CO/CA/ 0.01% of their portfolio PASADENA, CA 3,083,0803.1m $8.9m $8.9m 0.01% Reduced -137.8k -137,837
7 Balyasny Asset Management L.P. 0.02% of their portfolio Chicago, IL 2,696,7102.7m $7.8m $7.8m 0.02% Added +595.0k +595,020
8 Hollow Brook Wealth Management LLC 2.16% of their portfolio Katonah, NY 1,785,7571.8m $5.2m $5.2m 2.16% New
9 BlackRock Inc. 0.00% of their portfolio New York, NY 1,365,3841.4m $4.0m $4.0m 0.00% Reduced -72.1k -72,060
10 NEEDHAM INVESTMENT MANAGEMENT LLC 0.60% of their portfolio NEW YORK, NY 1,224,4351.2m $3.6m $3.6m 0.60% Reduced -810.0k -810,000
11 BOOTHBAY FUND MANAGEMENT, LLC 0.11% of their portfolio NEW YORK, NY 1,206,0141.2m $3.5m $3.5m 0.11% Reduced -1.1m -1,096,264
12 Casdin Capital, LLC 0.39% of their portfolio New York, NY 1,200,0001.2m $3.5m $3.5m 0.39% Unchanged
13 Price Jennifer C. 1.64% of their portfolio NEW YORK, NY 980,100980.1k $2.8m $2.8m 1.64% Unchanged
14 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 757,814757.8k $2.2m $2.2m 0.00% Added +69.9k +69,868
15 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 613,400613.4k $1.8m $1.8m 0.00% Reduced -11.9k -11,909
16 Parkman Healthcare Partners LLC 0.27% of their portfolio STAMFORD, CT 500,000500.0k $1.4m $1.4m 0.27% New
17 Informed Momentum Co LLC 0.27% of their portfolio SOLANA BEACH, CA 473,982474.0k $1.4m $1.4m 0.27% New
18 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 428,601428.6k $1.2m $1.2m 0.00% Reduced -157.7k -157,666
19 SILVERBACK ASSET MANAGEMENT LLC 0.12% of their portfolio DURHAM, NC 300,000300.0k $870.0k $870.0k 0.12% Reduced -150.0k -150,000
20 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 279,537279.5k $810.7k $810.7k 0.00% Unchanged
21 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio HOUSTON, TX 212,000212.0k $614.8k $614.8k 0.01% Unchanged
22 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 202,247202.2k $586.5k $586.5k 0.00% Added +27.5k +27,464
23 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 192,670192.7k $559.0k $559.0k 0.00% Reduced -593.6k -593,616
24 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 189,791189.8k $550.4k $550.4k 0.00% New
25 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 144,598144.6k $419.3k $419.3k 0.00% Reduced -199.1k -199,099
26 Schonfeld Strategic Advisors LLC 0.00% of their portfolio NEW YORK, NY 143,000143.0k $414.7k $414.7k 0.00% New
27 Rockefeller Capital Management L.P. 0.00% of their portfolio NEW YORK, NY 131,768131.8k $382.1k $382.1k 0.00% Added +728 +728
28 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 113,525113.5k $329.2k $329.2k 0.00% Added +33.5k +33,495
29 Polar Capital Holdings Plc 0.00% of their portfolio London, X0 100,000100.0k $290.0k $290.0k 0.00% Unchanged
30 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 97,70197.7k $283.3k $283.3k 0.00% Reduced -2.1k -2,062
31 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 96,23196.2k $279.1k $279.1k 0.00% Added +25.0k +25,020
32 Intellectus Partners, LLC 0.06% of their portfolio SAN FRANCISCO, CA 62,76862.8k $182.0k $182.0k 0.06% Unchanged
33 Jefferies Financial Group Inc. 0.00% of their portfolio NEW YORK, NY 56,40056.4k $163.6k $163.6k 0.00% New
34 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 54,39854.4k $157.8k $157.8k 0.00% Unchanged
35 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 50,23550.2k $146.0k $146.0k 0.00% Reduced -13.1k -13,144
36 Bradley & Co. Private Wealth Management, LLC 0.15% of their portfolio MIAMI, FL 50,00050.0k $145.0k $145.0k 0.15% Unchanged
37 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 48,19448.2k $139.8k $139.8k 0.00% New
38 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 47,58047.6k $138.0k $138.0k 0.00% Added +20.4k +20,355
39 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 38,40038.4k $112.0k $112.0k 0.00% Unchanged
40 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 35,63335.6k $103.3k $103.3k 0.00% Reduced -2.9k -2,883
41 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 34,58234.6k $100.3k $100.3k 0.00% New
42 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 33,79933.8k $98.0k $98.0k 0.00% Added +1.9k +1,873
43 Jump Financial, LLC 0.00% of their portfolio Chicago, IL 32,45032.5k $94.1k $94.1k 0.00% New
44 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 31,19231.2k $90.5k $90.5k 0.00% Unchanged
45 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 30,08230.1k $87.0k $87.0k 0.00% Unchanged
46 EverSource Wealth Advisors, LLC 0.01% of their portfolio BIRMINGHAM, AL 27,80027.8k $80.6k $80.6k 0.01% Unchanged
47 ALGERT GLOBAL LLC 0.00% of their portfolio SAN FRANCISCO, CA 26,09026.1k $75.7k $75.7k 0.00% Unchanged
48 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 23,47223.5k $68.1k $68.1k 0.00% Added +7.3k +7,300
49 FREEDOM WEALTH ALLIANCE, LLC 0.10% of their portfolio BROOKFIELD, WI 20,39420.4k $59.1k $59.1k 0.10% New
50 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 19,90019.9k $57.7k $57.7k 0.00% Reduced -10.2k -10,200
51 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 19,08519.1k $55.3k $55.3k 0.00% New
52 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 17,61017.6k $50.0k $50.0k 0.00% New
53 MEYER HANDELMAN CO 0.00% of their portfolio RYE BROOK, NY 17,50017.5k $50.8k $50.8k 0.00% Unchanged
54 Engineers Gate Manager LP 0.00% of their portfolio NEW YORK, NY 16,33816.3k $47.4k $47.4k 0.00% Reduced -1.2k -1,154
55 UBS Group AG 0.00% of their portfolio ZURICH, V8 15,63015.6k $45.3k $45.3k 0.00% Reduced -3.2k -3,160
56 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 15,00015.0k $43.5k $43.5k 0.00% New
57 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 10,43010.4k $30.2k $30.2k 0.00% Added +9.9k +9,901
58 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 9,5069.5k $27.6k $27.6k 0.00% Reduced -214 -214
59 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 6,4246.4k $18.6k $18.6k 0.00% Added +485 +485
60 Cubist Systematic Strategies, LLC 0.00% of their portfolio STAMFORD, CT 6,1736.2k $17.9k $17.9k 0.00% Reduced -9.6k -9,600
61 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 2,8912.9k $8.4k $8.4k 0.00% Unchanged
62 Park Place Capital Corp 0.00% of their portfolio Homewood, AL 2,8082.8k $8.1k $8.1k 0.00% Unchanged
63 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 1,3981.4k $4.0k $4.0k 0.00% Reduced -7.2k -7,167
64 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 1,3111.3k $3.8k $3.8k 0.00% Unchanged
65 COMERICA BANK 0.00% of their portfolio DALLAS, TX 1,1611.2k $3.4k $3.4k 0.00% New
66 Sandy Spring Bank 0.00% of their portfolio Olney, MD 1,0001.0k $2.9k $2.9k 0.00% Unchanged
67 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 947947 $2.7k $2.7k 0.00% Added +64 +64
68 Global Retirement Partners, LLC 0.00% of their portfolio San Rafael, CA 880880 $1.8k $1.8k 0.00% Unchanged
69 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 845845 $2.5k $2.5k 0.00% Added +145 +145
70 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 498498 $1.4k $1.4k 0.00% New
71 FMR LLC 0.00% of their portfolio BOSTON, MA 5151 $148 $148 0.00% Unchanged
72 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 11 $3 $3 0.00% Unchanged
73 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged