Quantum-Si Inc - QSI

Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 1 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
BlackRock, Inc. History Added to 13,054,057 14,359 0.0% 0.0% 1 +1,732,384 15.3% Q4 2025 Feb 12, 2026
VANGUARD GROUP INC History Added to 9,607,022 10,567 0.0% 0.0% 2 +892,515 10.24% Q4 2025 Jan 29, 2026
ARK Investment Management LLC History Reduced 7,021,571 7,723 0.05% 0.06% 3 -602,471 -7.9% Q4 2025 Feb 11, 2026
Sumitomo Mitsui Trust Group, Inc. History Reduced 4,690,720 5,159 0.0% 0.0% 4 -526,779 -10.1% Q4 2025 Jan 23, 2026
Amova Asset Management Americas, Inc. History Reduced 4,690,720 5,112 0.06% 0.07% 5 -526,779 -10.1% Q4 2025 Feb 11, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 4,114,375 4,526 0.0% 0.0% 6 +367,206 9.8% Q4 2025 Feb 09, 2026
STATE STREET CORP History Added to 3,562,721 3,918 0.0% 0.0% 7 +745,231 26.45% Q4 2025 Feb 13, 2026
CITADEL ADVISORS LLC History Added to 3,493,097 3,842 0.0% 0.0% 8 +2,295,650 191.71% Q4 2025 Feb 17, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 2,855,585 3,141 0.0% 0.0% 9 +344,790 13.73% Q4 2025 Feb 17, 2026
NORTHERN TRUST CORP History Reduced 2,207,936 2,428 0.0% 0.0% 10 -115,106 -4.95% Q4 2025 Feb 17, 2026
UBS Group AG History Added to 1,449,512 1,594 0.0% 0.0% 11 +944,653 187.11% Q4 2025 Jan 29, 2026
JANE STREET GROUP, LLC History Reduced 1,434,833 1,578 0.0% 0.0% 12 -251,390 -14.91% Q4 2025 Feb 12, 2026
TWO SIGMA INVESTMENTS, LP History Added to 1,384,181 1,522 0.0% 0.0% 13 +868,329 168.33% Q4 2025 Feb 17, 2026
Fosun International Ltd History No change 743,935 818 0.19% 0.39% 14 0 0.0% Q4 2025 Feb 11, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Added to 468,174 514 0.0% 0.0% 15 +86 0.02% Q4 2025 Feb 13, 2026
XTX Topco Ltd History Added to 461,982 508 0.01% 0.01% 16 +311,450 206.9% Q4 2025 Feb 17, 2026
Nuveen, LLC History No change 447,519 492 0.0% 0.0% 17 0 0.0% Q4 2025 Feb 12, 2026
Bank of New York Mellon Corp History Added to 406,291 446 0.0% 0.0% 18 +11,386 2.88% Q4 2025 Feb 10, 2026
Invesco Ltd. History Added to 402,821 443 0.0% 0.0% 19 +107,093 36.21% Q4 2025 Feb 19, 2026
MORGAN STANLEY History Added to 399,994 439 0.0% 0.0% 20 +128,994 47.6% Q4 2025 Feb 13, 2026
GOLDMAN SACHS GROUP INC History Reduced 386,824 425 0.0% 0.0% 21 -327 -0.08% Q4 2025 Mar 25, 2026
Knollwood Investment Advisory, LLC History No change 300,000 330 0.03% 0.04% 22 0 0.0% Q4 2025 Feb 13, 2026
Quadrature Capital Ltd History New 276,889 304 0.0% 23 +276,889 New Q4 2025 Feb 17, 2026
ALLIANCEBERNSTEIN L.P. History No change 272,180 299 0.0% 0.0% 24 0 0.0% Q4 2025 Feb 17, 2026
BARCLAYS PLC History Added to 269,415 296 0.0% 0.0% 25 +48,205 21.79% Q4 2025 Feb 13, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History No change 261,100 287 0.01% 0.01% 26 0 0.0% Q4 2025 Feb 17, 2026
BANK OF AMERICA CORP /DE/ History Reduced 258,445 284 0.0% 0.0% 27 -89,562 -25.74% Q4 2025 Feb 17, 2026
IQ EQ FUND MANAGEMENT (IRELAND) Ltd History Added to 253,895 279 0.02% 0.02% 28 +64,721 34.21% Q4 2025 Feb 12, 2026
GROUP ONE TRADING LLC History Reduced 245,801 270 0.0% 0.0% 29 -131,973 -34.93% Q4 2025 Feb 12, 2026
Virtu Financial LLC History New 238,379 262 0.01% 30 +238,379 New Q4 2025 Feb 23, 2026
RHUMBLINE ADVISERS History Reduced 193,595 212 0.0% 0.0% 31 -26,370 -11.99% Q4 2025 Feb 13, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 191,791 210 0.0% 0.0% 32 -2,478,168 -92.82% Q4 2025 Feb 17, 2026
Verdence Capital Advisors LLC History Added to 187,805 206 0.01% 0.02% 33 +23,975 14.63% Q4 2025 Jan 29, 2026
WELLS FARGO & COMPANY/MN History Added to 176,132 193 0.0% 0.0% 34 +40,182 29.56% Q4 2025 Feb 13, 2026
LOS ANGELES CAPITAL MANAGEMENT LLC History New 93,010 188 0.0% 35 +93,010 New Q4 2025 Feb 11, 2026
Shay Capital LLC History Reduced 149,132 164 0.02% 0.02% 36 -5,440 -3.52% Q4 2025 Feb 17, 2026
DEUTSCHE BANK AG\ History Added to 119,028 130 0.0% 0.0% 37 +6,944 6.2% Q4 2025 Feb 11, 2026
HRT FINANCIAL LP History New 104,292 114 0.0% 38 +104,292 New Q4 2025 Feb 12, 2026
JONES FINANCIAL COMPANIES LLLP History Added to 98,900 108 0.0% 0.0% 39 +5,400 5.78% Q4 2025 Feb 17, 2026
FMR LLC History Added to 97,925 107 0.0% 0.0% 41 +7,405 8.18% Q4 2025 Feb 17, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History Added to 96,486 107 0.0% 0.0% 40 +4,452 4.84% Q4 2025 Feb 17, 2026
AQR CAPITAL MANAGEMENT LLC History Added to 86,689 95 0.0% 0.0% 42 +2,865 3.42% Q4 2025 Feb 17, 2026
SIMPLEX TRADING, LLC History Reduced 80,507 88 0.0% 0.0% 43 -73,576 -47.75% Q4 2025 Feb 11, 2026
JPMORGAN CHASE & CO History Added to 76,909 84 0.0% 0.0% 44 +13,629 21.54% Q4 2025 Feb 11, 2026
Caitong International Asset Management Co., Ltd History Added to 75,928 83 0.02% 0.06% 45 +16,154 27.03% Q4 2025 Mar 03, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Reduced 72,970 80 0.0% 0.0% 46 -6 -0.01% Q4 2025 Feb 17, 2026
INTECH INVESTMENT MANAGEMENT LLC History Reduced 65,636 72 0.0% 0.0% 47 -9,125 -12.21% Q4 2025 Feb 10, 2026
Mariner, LLC History Added to 56,880 62 0.0% 0.0% 48 +6,351 12.57% Q4 2025 Feb 13, 2026
Green Alpha Advisors, LLC History Reduced 51,528 56 0.05% 0.29% 49 -164,504 -76.15% Q4 2025 Jan 07, 2026
AlphaCore Capital LLC History Reduced 49,350 54 0.0% 0.0% 50 -53,500 -52.02% Q4 2025 Feb 05, 2026
MANUFACTURERS LIFE INSURANCE COMPANY, THE History New 48,372 53 0.0% 51 +48,372 New Q4 2025 Feb 13, 2026
Scientech Research LLC History New 45,915 50 0.03% 52 +45,915 New Q4 2025 Feb 17, 2026
Police & Firemen's Retirement System of New Jersey History No change 46,170 50 0.0% 0.0% 53 0 0.0% Q4 2025 Feb 13, 2026
Sanctuary Advisors, LLC History Added to 42,413 46 0.0% 0.0% 54 +5,631 15.31% Q4 2025 Jan 29, 2026
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM History New 41,282 45 0.0% 55 +41,282 New Q4 2025 Feb 12, 2026
Cambridge Investment Research Advisors, Inc. History Reduced 37,767 42 0.0% 0.0% 56 -1,100 -2.83% Q4 2025 Feb 05, 2026
PEAK6 LLC History Reduced 38,100 41 0.0% 0.0% 58 -948,800 -96.14% Q4 2025 Mar 12, 2026
ProShare Advisors LLC History Added to 37,341 41 0.0% 0.0% 57 +10,481 39.02% Q4 2025 Feb 06, 2026
Red Wave Investments LLC History No change 37,000 40 0.01% 0.02% 59 0 0.0% Q4 2025 Feb 06, 2026
BNP PARIBAS FINANCIAL MARKETS History Added to 36,276 39 0.0% 0.0% 60 +5,812 19.08% Q4 2025 Feb 10, 2026
CAPTRUST FINANCIAL ADVISORS History Reduced 34,603 38 0.0% 0.0% 61 -225 -0.65% Q4 2025 Feb 17, 2026
JTC Employer Solutions Trustee Ltd History No change 34,540 38 0.0% 0.0% 62 0 0.0% Q4 2025 Feb 10, 2026
MetLife Investment Management, LLC History Reduced 34,222 37 0.0% 0.0% 63 -30,346 -47.0% Q4 2025 Feb 12, 2026
SBI Securities Co., Ltd. History Added to 34,163 37 0.0% 0.0% 64 +547 1.63% Q4 2025 Feb 03, 2026
SEI INVESTMENTS CO History No change 33,103 36 0.0% 0.0% 65 0 0.0% Q4 2025 Feb 13, 2026
China Universal Asset Management Co., Ltd. History New 31,865 35 0.0% 67 +31,865 New Q4 2025 Jan 29, 2026
Tower Research Capital LLC (TRC) History Added to 32,595 35 0.0% 0.0% 66 +17,934 122.32% Q4 2025 Feb 17, 2026
DIMENSIONAL FUND ADVISORS LP History New 31,320 34 0.0% 68 +31,320 New Q4 2025 Feb 12, 2026
SG Americas Securities, LLC History Reduced 29,106 32 0.0% 0.0% 69 -13,001 -30.88% Q4 2025 Jan 09, 2026
COMMONWEALTH EQUITY SERVICES, LLC History Reduced 27,960 30 0.0% 0.0% 70 -8,219 -22.72% Q4 2025 Feb 12, 2026
Neuberger Berman Group LLC History New 26,820 29 0.0% 72 +26,820 New Q4 2025 Feb 13, 2026
Russell Investments Group, Ltd. History Reduced 26,893 29 0.0% 0.0% 73 -5,113 -15.98% Q4 2025 Feb 17, 2026
Wealth Management Associates, Inc. History Reduced 26,950 29 0.01% 0.02% 74 -4,000 -12.92% Q4 2025 Jan 20, 2026
VOYA INVESTMENT MANAGEMENT LLC History No change 27,246 29 0.0% 0.0% 71 0 0.0% Q4 2025 Feb 12, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 26,084 28 0.0% 0.0% 75 0 0.0% Q4 2025 Feb 12, 2026
LPL Financial LLC History Reduced 25,217 27 0.0% 0.0% 76 -3,243 -11.39% Q4 2025 Feb 11, 2026
Leonteq Securities AG History No change 25,000 27 0.0% 0.0% 77 0 0.0% Q4 2025 Feb 06, 2026
Curbstone Financial Management Corp History New 24,000 26 0.0% 78 +24,000 New Q4 2025 Jan 23, 2026
Walleye Capital LLC History New 23,658 26 0.0% 79 +23,658 New Q4 2025 Feb 13, 2026
Vanguard Personalized Indexing Management, LLC History Reduced 23,799 26 0.0% 0.0% 80 -1,394 -5.53% Q4 2025 Feb 13, 2026
HBW ADVISORY SERVICES LLC History Reduced 24,163 26 0.0% 0.0% 81 -80 -0.33% Q4 2025 Jan 23, 2026
Atom Investors LP History New 21,995 24 0.0% 83 +21,995 New Q4 2025 Feb 17, 2026
Walleye Trading LLC History New 21,900 24 0.0% 82 +21,900 New Q4 2025 Feb 13, 2026
Capital Investment Advisory Services, LLC History No change 20,000 22 0.0% 0.0% 84 0 0.0% Q4 2025 Jan 21, 2026
CITIGROUP INC History Reduced 19,776 21 0.0% 0.0% 85 -3,897 -16.46% Q4 2025 Feb 13, 2026
VICTORY CAPITAL MANAGEMENT INC History Added to 19,797 21 0.0% 0.0% 86 +2,321 13.28% Q4 2025 Feb 13, 2026
BALYASNY ASSET MANAGEMENT L.P. History Reduced 19,300 21 0.0% 0.0% 87 -502 -2.54% Q4 2025 Feb 17, 2026
Blueshift Asset Management, LLC History New 17,442 19 0.01% 88 +17,442 New Q4 2025 Feb 13, 2026
Kovack Advisors, Inc. History New 16,800 18 0.0% 89 +16,800 New Q4 2025 Feb 17, 2026
Belvedere Trading LLC History Reduced 14,600 16 0.0% 0.0% 90 -3,090 -17.47% Q4 2025 Feb 10, 2026
Stratos Wealth Advisors, LLC History Added to 15,036 16 0.0% 0.0% 91 +1,500 11.08% Q4 2025 Jan 20, 2026
Graham Capital Management, L.P. History New 14,422 15 0.0% 93 +14,422 New Q4 2025 Feb 17, 2026
NewEdge Advisors, LLC History Added to 14,042 15 0.0% 0.0% 94 +3,872 38.07% Q4 2025 Feb 18, 2026
Ameritas Investment Partners, Inc. History No change 14,401 15 0.0% 0.0% 92 0 0.0% Q4 2025 Feb 11, 2026
Procyon Advisors, LLC History No change 13,671 15 0.0% 0.0% 95 0 0.0% Q4 2025 Jan 07, 2026
Flagship Private Wealth, LLC History No change 14,158 15 0.01% 0.01% 96 0 0.0% Q4 2025 Feb 04, 2026
EWA, LLC History Reduced 13,632 14 0.0% 0.01% 98 -3,487 -20.37% Q4 2025 Feb 03, 2026
Legal & General Group Plc History No change 12,860 14 0.0% 0.0% 97 0 0.0% Q4 2025 Feb 09, 2026
McAdam, LLC History New 12,329 13 0.0% 100 +12,329 New Q4 2025 Feb 13, 2026
XPONANCE LLC History Reduced 11,824 13 0.0% 0.0% 99 -128 -1.07% Q4 2025 Feb 12, 2026
State of Wyoming History New 11,089 12 0.0% 101 +11,089 New Q4 2025 Feb 11, 2026
HOLLENCREST CAPITAL MANAGEMENT History Reduced 10,000 11 0.0% 0.0% 103 -25,000 -71.43% Q4 2025 Feb 12, 2026
CIBC WORLD MARKETS CORP History New 10,392 11 0.0% 102 +10,392 New Q4 2025 Feb 12, 2026
Cresset Asset Management, LLC History New 10,207 11 0.0% 104 +10,207 New Q4 2025 Feb 17, 2026
Kestra Advisory Services, LLC History No change 10,090 11 0.0% 0.0% 105 0 0.0% Q4 2025 Feb 13, 2026
Glen Eagle Advisors, LLC History No change 10,000 11 0.0% 0.0% 106 0 0.0% Q4 2025 Feb 13, 2026
Mirae Asset Global Investments Co., Ltd. History New 9,503 10 0.0% 108 +9,503 New Q4 2025 Jan 26, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Added to 9,661 10 0.0% 0.0% 107 +854 9.7% Q4 2025 Feb 17, 2026
Sterling Capital Management LLC History Reduced 9,054 9 0.0% 0.0% 109 -1,785 -16.47% Q4 2025 Feb 13, 2026
CWM, LLC History Added to 6,994 8 0.0% 0.0% 110 +4,838 224.4% Q4 2025 Jan 26, 2026
GAMMA Investing LLC History New 6,991 7 0.0% 112 +6,991 New Q4 2025 Jan 05, 2026
OSAIC HOLDINGS, INC. History Added to 7,101 7 0.0% 0.0% 111 +5,881 482.05% Q4 2025 Feb 17, 2026
WOLVERINE ASSET MANAGEMENT LLC History Reduced 6,170 6 0.0% 0.0% 113 -1,655 -21.15% Q4 2025 Feb 02, 2026
Blue Trust, Inc. History New 5,000 5 0.0% 116 +5,000 New Q4 2025 Jan 16, 2026
TUCKER ASSET MANAGEMENT LLC History New 4,714 5 0.0% 117 +4,714 New Q4 2025 Feb 05, 2026
ROYAL BANK OF CANADA History New 4,467 5 0.0% 115 +4,467 New Q4 2025 Feb 17, 2026
AMALGAMATED BANK History Added to 4,935 5 0.0% 0.0% 114 +793 19.15% Q4 2025 Feb 05, 2026
FNY Investment Advisers, LLC History New 4,000 4 0.0% 118 +4,000 New Q4 2025 Jan 16, 2026
GF FUND MANAGEMENT CO. LTD. History New 3,723 4 0.0% 122 +3,723 New Q4 2025 Jan 27, 2026
N.E.W. Advisory Services LLC History No change 3,854 4 0.0% 0.0% 119 0 0.0% Q4 2025 Jan 28, 2026
MTM Investment Management, LLC History No change 4,125 4 0.0% 0.0% 120 0 0.0% Q4 2025 Feb 09, 2026
PINNEY & SCOFIELD, INC. History No change 3,680 4 0.0% 0.0% 121 0 0.0% Q4 2025 Feb 13, 2026
Archer Investment Corp History No change 2,000 2 0.0% 0.0% 123 0 0.0% Q4 2025 Jan 30, 2026
Sound Income Strategies, LLC History New 1,000 1 0.0% 124 +1,000 New Q4 2025 Jan 21, 2026
Signature Resources Capital Management, LLC History New 1,000 1 0.0% 126 +1,000 New Q4 2025 Jan 21, 2026
Optiver Holding B.V. History Reduced 927 1 0.0% 0.0% 125 -191 -17.08% Q4 2025 Feb 17, 2026
Squarepoint Ops LLC History Closed out 0 0 0.0% -613,475 -100.0% Q3 2025 Nov 14, 2025
IMC-Chicago, LLC History Closed out 0 0 0.0% -185,117 -100.0% Q3 2025 Nov 04, 2025
Engineers Gate Manager LP History Closed out 0 0 0.0% -41,451 -100.0% Q3 2025 Nov 14, 2025
MERCER GLOBAL ADVISORS INC /ADV History Closed out 0 0 0.0% -26,989 -100.0% Q3 2025 Nov 14, 2025
Elite Life Management LLC History Closed out 0 0 0.11% -20,611 -100.0% Q3 2025 Oct 16, 2025
DLK Investment Management, LLC History Closed out 0 0 0.01% -19,750 -100.0% Q3 2025 Oct 14, 2025
Jump Financial, LLC History Closed out 0 0 0.0% -15,100 -100.0% Q3 2025 Nov 13, 2025
CIBC WORLD MARKET INC. History Closed out 0 0 0.0% -14,000 -100.0% Q3 2025 Nov 06, 2025
PRUDENTIAL FINANCIAL INC History Closed out 0 0 0.0% -12,850 -100.0% Q3 2025 Nov 13, 2025
PRINCIPAL FINANCIAL GROUP INC History Closed out 0 0 0.0% -11,156 -100.0% Q3 2025 Nov 04, 2025
MARK SHEPTOFF FINANCIAL PLANNING, LLC History Closed out 0 0 0.01% -10,500 -100.0% Q3 2025 Nov 13, 2025
TriaGen Wealth Management LLC History Closed out 0 0 0.0% -10,000 -100.0% Q3 2025 Oct 22, 2025
PRINCIPAL SECURITIES, INC. History Closed out 0 0 0.0% -6,641 -100.0% Q3 2025 Nov 12, 2025
Allworth Financial LP History New 436 0 +436 New Q4 2025 Feb 05, 2026
Bangor Savings Bank History Closed out 0 0 -400 -100.0% Q3 2025 Oct 27, 2025
Atlantic Union Bankshares Corp History Closed out 0 0 -251 -100.0% Q3 2025 Nov 04, 2025
United Financial Planning Group LLC History New 200 0 +200 New Q4 2025 Feb 11, 2026
Arax Advisory Partners History Closed out 0 0 -104 -100.0% Q3 2025 Nov 14, 2025
ROTHSCHILD INVESTMENT LLC History New 70 0 +70 New Q4 2025 Feb 10, 2026
SageView Advisory Group, LLC History New 17 0 +17 New Q4 2025 Feb 17, 2026
NISA INVESTMENT ADVISORS, LLC History No change 608 0 0 0.0% Q4 2025 Jan 15, 2026
Capital Advisors, Ltd. LLC History No change 58 0 0 0.0% Q4 2025 Jan 21, 2026
EverSource Wealth Advisors, LLC History No change 427 0 0 0.0% Q4 2025 Feb 06, 2026
TD Waterhouse Canada Inc. History No change 800 0 0.0% 0 0.0% Q4 2025 Jan 27, 2026
Federation des caisses Desjardins du Quebec History No change 50 0 0 0.0% Q4 2025 Feb 12, 2026