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Quantum-Si (QSI) Institutional Ownership

Quantum-Si logo
$1.60 -0.10 (-5.88%)
Closing price 09/23/2025 04:00 PM Eastern
Extended Trading
$1.68 +0.08 (+5.00%)
As of 05:33 AM Eastern
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Institutional Ownership Changes (13F Filings) for Quantum-Si (NASDAQ:QSI)

Current
Institutional Ownership
Percentage
39.90%
Number of
Institutional Buyers
(last 12 months)
57
Total
Institutional Inflows
(last 12 months)
$13.86M
Number of
Institutional Sellers
(last 12 months)
18
Total
Institutional Outflows
(last 12 months)
$23.73M
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QSI Institutional Buying and Selling by Quarter

Quantum-Si Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/16/2025 Nikko Asset Management Americas Inc.5,621,303$11.02M0.1%-3.3%3.063%
8/15/2025 Bank of America Corp DE465,999$913K0.0%+426.6%0.254%
8/15/2025 Ameriprise Financial Inc.223,100$437K0.0%N/A0.122%
8/14/2025 The Manufacturers Life Insurance Company 49,082$96K0.0%+27.4%0.027%
8/14/2025 Cerity Partners LLC14,881$29K0.0%N/A0.008%
8/13/2025 Invesco Ltd.195,450$383K0.0%+88.6%0.107%
8/12/2025 XTX Topco Ltd46,474$91K0.0%-87.4%0.025%
8/12/2025Jefferies Financial Group Inc.20,000$39K0.0%-71.7%0.011%
8/12/2025 Prudential Financial Inc.12,850$25K0.0%N/A0.007%
8/12/2025 Rhumbline Advisers203,967$400K0.0%+36.0%0.111%
8/12/2025 JPMorgan Chase & Co.66,656$131K0.0%+15.6%0.036%
8/8/2025 Kingsview Wealth Management LLC20,012$39K0.0%+99.9%0.011%
8/8/2025 Intech Investment Management LLC88,497$173K0.0%+44.2%0.048%
8/8/2025 Geode Capital Management LLC3,447,738$6.76M0.0%+15.1%1.879%
8/4/2025 Wolverine Asset Management LLC16,501$32K0.0%+140.0%0.009%
8/1/2025 IQ EQ FUND MANAGEMENT IRELAND Ltd116,828$229K0.0%+67.0%0.064%
8/1/2025 Green Alpha Advisors LLC228,348$448K0.4%-6.4%0.124%
7/31/2025 Sumitomo Mitsui Trust Group Inc.5,621,303$11.02M0.0%-3.3%3.063%
7/30/2025 ARK Investment Management LLC7,960,736$15.60M0.1%-8.6%4.338%
7/29/2025 JTC Employer Solutions Trustee Ltd13,340$26K0.0%N/A0.007%
7/18/2025 EWA LLC68,200$134K0.0%-13.3%0.037%
6/27/2025 Goldman Sachs Group Inc.441,314$530K0.0%-56.0%0.240%
5/28/2025Wealth Management Associates Inc.26,950$32K0.0%-23.1%0.015%
5/16/2025Goldman Sachs Group Inc.441,314$530K0.0%-56.0%0.241%
5/16/2025Millennium Management LLC3,934,285$4.72M0.0%N/A2.148%
5/16/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.70,552$85K0.0%+23.8%0.039%
5/14/2025Corebridge Financial Inc.58,876$71K0.0%+18.2%0.032%
5/14/2025MetLife Investment Management LLC76,015$91K0.0%N/A0.042%
5/13/2025Russell Investments Group Ltd.38,257$46K0.0%+322.6%0.021%
5/12/2025Nuveen LLC319,100$383K0.0%N/A0.174%
5/12/2025Virtu Financial LLC34,830$42K0.0%N/A0.019%
5/12/2025Invesco Ltd.103,657$124K0.0%+177.7%0.057%
5/9/2025Deutsche Bank AG67,522$81K0.0%+107.4%0.037%
5/9/2025Charles Schwab Investment Management Inc.367,444$441K0.0%+19.3%0.201%
5/9/2025IQ EQ FUND MANAGEMENT IRELAND Ltd69,944$84K0.0%+106.3%0.038%
5/8/2025XTX Topco Ltd368,968$443K0.0%+50.2%0.201%
5/7/2025ARK Investment Management LLC8,713,501$10.46M0.1%-1.5%4.758%
5/7/2025Nikko Asset Management Americas Inc.5,811,430$6.92M0.1%-2.6%3.173%
4/29/2025Bank of New York Mellon Corp294,906$354K0.0%+9.3%0.161%
4/25/2025Sumitomo Mitsui Trust Group Inc.5,811,430$6.97M0.0%-2.6%3.173%
4/22/2025EWA LLC78,688$94K0.0%N/A0.043%
4/21/2025WestHill Financial Advisors Inc.21,727$26K0.0%N/A0.012%
4/9/2025HBW Advisory Services LLC24,243$29K0.0%N/A0.013%
4/9/2025Green Alpha Advisors LLC244,067$293K0.3%+53.6%0.133%
3/17/2025Wealth Enhancement Advisory Services LLC13,384$36K0.0%N/A0.007%
2/18/2025Alpine Global Management LLC13,785$37K0.0%N/A0.010%
2/17/2025Two Sigma Investments LP152,683$412K0.0%N/A0.107%
2/17/2025Shay Capital LLC216,546$585K0.1%+56.7%0.152%
2/17/2025ProShare Advisors LLC28,204$76K0.0%+49.0%0.020%
2/17/2025Nuveen Asset Management LLC319,100$862K0.0%-43.5%0.224%
2/17/2025Cetera Investment Advisers13,380$36K0.0%N/A0.009%
2/17/2025Centiva Capital LP143,176$387K0.0%N/A0.100%
2/17/2025Bridgeway Capital Management LLC296,100$799K0.0%-27.2%0.207%
2/17/2025Balyasny Asset Management L.P.13,488$36K0.0%N/A0.009%
2/17/2025Bank of America Corp DE111,871$302K0.0%+13.4%0.078%
2/17/2025BNP Paribas Financial Markets19,025$51K0.0%N/A0.013%
2/14/2025Mercer Global Advisors Inc. ADV30,959$84K0.0%N/A0.022%
2/14/2025Northern Trust Corp841,146$2.27M0.0%+5.0%0.589%
2/14/2025The Manufacturers Life Insurance Company34,850$94K0.0%N/A0.024%
2/14/2025Voya Investment Management LLC30,863$83K0.0%-15.4%0.022%
2/14/2025Price T Rowe Associates Inc. MD109,114$295K0.0%+12.1%0.076%
2/14/2025Alpine Global Management LLC13,785$37K0.0%N/A0.010%
2/14/2025Tower Research Capital LLC TRC23,347$63K0.0%+139.3%0.016%
2/13/2025Jump Financial LLC12,385$33K0.0%N/A0.009%
2/13/2025Guggenheim Capital LLC199,999$540K0.0%-17.5%0.140%
2/13/2025XTX Topco Ltd245,585$663K0.1%+460.5%0.172%
2/13/2025Mariner LLC33,439$90K0.0%+29.1%0.023%
2/13/2025Barclays PLC150,616$406K0.0%-23.5%0.106%
2/13/2025Renaissance Technologies LLC544,956$1.47M0.0%+1,211.4%0.382%
2/13/2025Wells Fargo & Company MN71,980$194K0.0%+13.9%0.050%
2/12/2025Thoroughbred Financial Services LLC33,000$89K0.0%N/A0.023%
2/12/2025Geode Capital Management LLC2,368,376$6.40M0.0%+2.2%1.660%
2/12/2025IQ EQ FUND MANAGEMENT IRELAND Ltd33,902$92K0.0%+29.4%0.024%
2/12/2025WINTON GROUP Ltd34,610$93K0.0%N/A0.024%
2/11/2025Dudley Capital Management LLC11,000$30K0.0%N/A0.008%
2/11/2025AXQ Capital LP34,067$92K0.0%N/A0.024%
2/10/2025Nikko Asset Management Americas Inc.5,965,208$16.05M0.2%-20.8%4.180%
2/10/2025Commonwealth Equity Services LLC31,013$84K0.0%+46.7%0.022%
2/6/2025Charles Schwab Investment Management Inc.308,021$832K0.0%+32.6%0.216%
2/6/2025Bravias Capital Group LLC20,250$55K0.0%N/A0.014%
2/6/2025SBI Securities Co. Ltd.22,261$60K0.0%N/A0.016%
2/4/2025ARK Investment Management LLC8,848,650$23.89M0.2%-25.3%6.200%
2/4/2025Bank of New York Mellon Corp269,807$728K0.0%+21.3%0.189%
2/3/2025Wolverine Asset Management LLC9,632$26K0.0%N/A0.007%
1/31/2025Sanctuary Advisors LLC35,243$95K0.0%N/A0.025%
1/30/2025Rhumbline Advisers148,946$402K0.0%+3.7%0.104%
1/28/2025Sumitomo Mitsui Trust Group Inc.5,965,208$16.11M0.0%-21.0%4.180%
1/23/2025Abel Hall LLC10,432$28K0.0%N/A0.007%
1/17/2025SG Americas Securities LLC67,588$182K0.0%+12.4%0.047%
1/13/2025Green Alpha Advisors LLC158,858$429K0.3%-9.3%0.111%
11/19/2024Barclays PLC196,826$173K0.0%+210.5%0.138%
11/16/2024Geode Capital Management LLC2,316,921$2.04M0.0%+6.7%1.627%
11/15/2024Barclays PLC196,826$173K0.0%+210.5%0.138%
11/15/2024XTX Topco Ltd43,812$39K0.0%+81.3%0.031%
11/15/2024Jane Street Group LLC256,689$226K0.0%-15.6%0.180%
11/15/2024State Street Corp2,269,038$2.00M0.0%-4.3%1.594%
11/12/2024Charles Schwab Investment Management Inc.232,360$205K0.0%-10.8%0.163%
11/5/2024Sumitomo Mitsui Trust Group Inc.7,547,912$6.66M0.0%-4.0%5.302%
11/5/2024GSA Capital Partners LLP112,317$99K0.0%-38.4%0.079%
10/31/2024ARK Investment Management LLC11,842,609$10.45M0.1%-4.6%8.319%
(Data available from 1/1/2016 forward)

QSI Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of QSI shares?

During the previous two years, 84 institutional investors and hedge funds held shares of Quantum-Si. The most heavily invested institutionals were ARK Investment Management LLC ($15.60M), Nikko Asset Management Americas Inc. ($11.02M), Sumitomo Mitsui Trust Group Inc. ($11.02M), Vanguard Group Inc. ($10.44M), Sumitomo Mitsui Trust Holdings Inc. ($8.26M), Geode Capital Management LLC ($6.76M), and Millennium Management LLC ($4.72M).Learn more on Quantum-Si's institutional investors.

What percentage of Quantum-Si's stock is owned by institutional investors?

39.90% of Quantum-Si's stock is owned by institutional investors. Learn more on QSI's institutional investor holdings.

Which institutional investors have been buying Quantum-Si's stock?

Of the 70 institutional investors that purchased Quantum-Si's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Sumitomo Mitsui Trust Holdings Inc. ($6.91M), Millennium Management LLC ($3.93M), ARK Investment Management LLC ($2.76M), Geode Capital Management LLC ($649.40K), Jacobs Levy Equity Management Inc. ($506.70K), Renaissance Technologies LLC ($503.40K), and Bank of America Corp DE ($390.69K).

How much institutional buying is happening at Quantum-Si?

Institutional investors have bought a total of 8,626,255 shares in the last 24 months. This purchase volume represents approximately $13.86M in transactions.

Which of Quantum-Si's major shareholders have been selling company stock?

Of the 18 institutional investors that sold Quantum-Si's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: ARK Investment Management LLC ($4.45M), Sumitomo Mitsui Trust Group Inc. ($2.24M), Nikko Asset Management Americas Inc. ($1.91M), Goldman Sachs Group Inc. ($1.12M), XTX Topco Ltd ($322.49K), Nuveen Asset Management LLC ($245.98K), and Bridgeway Capital Management LLC ($110.60K).

How much institutional selling is happening at Quantum-Si?

Institutional investors have sold a total of 10,841,609 shares in the last 24 months. This volume of shares sold represents approximately $23.73M in transactions.


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This page (NASDAQ:QSI) was last updated on 9/24/2025 by MarketBeat.com Staff
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