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QSI

Quantum-Si Inc
$0.82 +0.00 (+0.42%) At close · Jul 17
Market Cap
$179.09M
Shares
217,760,163

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 157
Total Value: $48,491,697
Total Shares: 62,616,496
Showing 1–100 of 164 holdings by value · page 1 of 2

Institutional Ownership Trend

21 quarters

Holder Concentration

Across 156 13F filers
Top Holder
21.4%
Jun 2023 → Mar 2026 · range 15.9% – 29.0%
of institutional value
Top 5
57.7%
Jun 2023 → Mar 2026 · range 56.4% – 79.6%
of institutional value
Top 10
79.5%
Jun 2023 → Mar 2026 · range 77.6% – 90.9%
of institutional value
HHI
925
Jun 2023 → Mar 2026 · range 811 – 1,485
Broadly held
Showing 100 of 164
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $10,383,168 21.41% 13,414,949
Mega VANGUARD CAPITAL MANAGEMENT LLC $5,434,956 11.21% 7,021,907
Large ARK Investment Management LLC $5,324,267 10.98% 6,878,899
Mega Sumitomo Mitsui Trust Group, Inc. $3,399,149 7.01% 4,391,666
Mid Amova Asset Management Americas, Inc. $3,399,149 7.01% 4,391,666
Mega GEODE CAPITAL MANAGEMENT, LLC $2,968,383 6.12% 3,835,121
Mega STATE STREET CORP $2,918,513 6.02% 3,770,689
Mega AQR CAPITAL MANAGEMENT LLC $1,851,541 3.82% 2,392,179
Mega UBS Group AG $1,317,753 2.72% 1,702,527
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,133,575 2.34% 1,464,568
Mega NORTHERN TRUST CORP Bank $975,782 2.01% 1,260,701
Mega VANGUARD FIDUCIARY TRUST CO Bank $864,753 1.78% 1,117,252
Small Fosun International Ltd $575,805 1.19% 743,935
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $354,159 0.73% 457,571
Mega Nuveen, LLC $349,357 0.72% 451,367
Mega GOLDMAN SACHS GROUP INC $343,792 0.71% 444,177
Mega Invesco Ltd. $314,776 0.65% 406,690
Mid XTX Topco Ltd $301,282 0.62% 389,254
Mega Bank of New York Mellon Corp Bank $296,509 0.61% 383,088
Large IEQ CAPITAL, LLC $276,850 0.57% 357,688
Small Knollwood Investment Advisory, LLC $232,200 0.48% 300,000
Mid IQ EQ FUND MANAGEMENT (IRELAND) Ltd $226,090 0.47% 292,107
Mid GROUP ONE TRADING LLC $219,801 0.45% 283,981
Mega ALLIANCEBERNSTEIN L.P. $210,667 0.43% 272,180
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $202,091 0.42% 261,100
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $194,815 0.40% 251,700
Mega JANE STREET GROUP, LLC $194,661 0.40% 251,500
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $173,143 0.36% 223,700
Mid IMC-Chicago, LLC $170,958 0.35% 220,876
Large CIBC Bancorp USA Inc. Bank $161,386 0.33% 208,510
Mid Verdence Capital Advisors LLC $157,783 0.33% 203,855
Large Mariner, LLC $154,561 0.32% 199,692
Mega RHUMBLINE ADVISERS $149,434 0.31% 193,068
Mega BANK OF AMERICA CORP /DE/ Bank $125,377 0.26% 161,987
Mid Shay Capital LLC $116,813 0.24% 150,922
Mega MORGAN STANLEY $100,572 0.21% 129,940
Mid AlphaCore Capital LLC $99,419 0.21% 128,449
Large CWM, LLC $98,013 0.20% 126,632
Mega DEUTSCHE BANK AG\ Bank $92,127 0.19% 119,028
Large RENAISSANCE TECHNOLOGIES LLC $91,254 0.19% 117,900
Large LOS ANGELES CAPITAL MANAGEMENT LLC $90,047 0.19% 116,341
Mega CITADEL ADVISORS LLC $88,081 0.18% 113,800
Large JONES FINANCIAL COMPANIES LLLP $85,062 0.18% 109,900
Large MetLife Investment Management, LLC $78,603 0.16% 101,555
Mega PRICE T ROWE ASSOCIATES INC /MD/ $74,680 0.15% 96,486
Mid SIMPLEX TRADING, LLC $70,070 0.14% 90,531
Mid Y-Intercept (Hong Kong) Ltd $69,993 0.14% 79,089
Mega CITADEL ADVISORS LLC $69,814 0.14% 90,200
Mega Vanguard Global Advisers, LLC $65,601 0.14% 84,757
Mega JPMORGAN CHASE & CO $64,643 0.13% 83,519
Large Cerity Partners LLC $62,421 0.13% 80,650
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $57,994 0.12% 74,928
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $56,139 0.12% 63,435
Large CAPTRUST FINANCIAL ADVISORS $53,433 0.11% 69,036
Mid Virtu Financial LLC $50,117 0.10% 64,751
Mega WELLS FARGO & COMPANY/MN $49,433 0.10% 63,868
Mid Quantbot Technologies LP $45,248 0.09% 58,461
Large MERCER GLOBAL ADVISORS INC /ADV $42,720 0.09% 55,195
Mega TWO SIGMA INVESTMENTS, LP $40,963 0.08% 52,924
Large Creative Planning $40,672 0.08% 52,548
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $36,728 0.08% 47,453
Mid INTECH INVESTMENT MANAGEMENT LLC $35,980 0.07% 46,486
Large Police & Firemen's Retirement System of New Jersey Pension $35,735 0.07% 46,170
Small Green Alpha Advisors, LLC $33,442 0.07% 43,208
Mid Sanctuary Advisors, LLC $33,145 0.07% 42,824
Large Cambridge Investment Research Advisors, Inc. $32,360 0.07% 41,809
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Pension $31,952 0.07% 41,282
Mid NINE MASTS CAPITAL Ltd $31,837 0.07% 41,134
Mid HOLLENCREST CAPITAL MANAGEMENT $31,045 0.06% 40,111
Mega BARCLAYS PLC $30,292 0.06% 39,137
Mega BNP PARIBAS ARBITRAGE, SA $29,713 0.06% 38,390
Micro Red Wave Investments LLC $28,638 0.06% 37,000
Mid China Universal Asset Management Co., Ltd. $26,859 0.06% 34,702
Mid JTC Employer Solutions Trustee Ltd $26,733 0.06% 34,540
Large SG Americas Securities, LLC Broker-Dealer $26,065 0.05% 33,677
Large ProShare Advisors LLC $25,726 0.05% 33,239
Large SEI INVESTMENTS CO $25,621 0.05% 33,103
Mid SBI Securities Co., Ltd. Broker-Dealer $24,870 0.05% 32,133
Mega FMR LLC $24,743 0.05% 31,968
Mega JANE STREET GROUP, LLC $24,071 0.05% 31,100
Mid Kovack Advisors, Inc. $23,220 0.05% 30,000
Micro Northern Lights Advisors, Inc. $23,211 0.05% 29,989
Large COMMONWEALTH EQUITY SERVICES, LLC $23,059 0.05% 29,792
Large VOYA INVESTMENT MANAGEMENT LLC $21,088 0.04% 27,246
Mid Merit Financial Group, LLC $20,899 0.04% 23,616
Small Wealth Management Associates, Inc. $20,859 0.04% 26,950
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $20,189 0.04% 26,084
Mid Pallas Capital Advisors LLC $19,935 0.04% 25,757
Small HBW ADVISORY SERVICES LLC $19,728 0.04% 22,292
Mid Leonteq Securities AG Broker-Dealer $19,350 0.04% 25,000
Mid Tower Research Capital LLC (TRC) $19,305 0.04% 24,943
Mid Vanguard Personalized Indexing Management, LLC $18,569 0.04% 23,991
Large Walleye Capital LLC $18,266 0.04% 23,600
Large Focus Partners Wealth $18,202 0.04% 23,517
Mega LPL Financial LLC $17,389 0.04% 22,467
Large Walleye Trading LLC $16,950 0.03% 21,900
Small DLK Investment Management, LLC $16,815 0.03% 19,000
Large PRUDENTIAL FINANCIAL INC $16,695 0.03% 21,570
Small Capital Investment Advisory Services, LLC $15,480 0.03% 20,000
Mega VICTORY CAPITAL MANAGEMENT INC $15,331 0.03% 19,808
Key facts CIK 1816431 CUSIP 74765K105 13F (30d) 12 filings 12 filers Visit website Investor relations

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