Free Trial
→ Here’s How to Claim Your Stake in Elon’s Private Company, xAI (From Brownstone Research) (Ad) Buy QSI Stock  Free QSI Stock Alerts

Quantum-Si (QSI) Institutional Ownership

Quantum-Si logo
$1.26 +0.10 (+8.62%)
Closing price 04:00 PM Eastern
Extended Trading
$1.25 -0.01 (-0.40%)
As of 05:55 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.
Compare

Institutional Ownership Changes (13F Filings) for Quantum-Si (NASDAQ:QSI)

Current
Institutional Ownership
Percentage
39.90%
Number of
Institutional Buyers
(last 12 months)
46
Total
Institutional Inflows
(last 12 months)
$6.88M
Number of
Institutional Sellers
(last 12 months)
15
Total
Institutional Outflows
(last 12 months)
$20.68M
Get QSI Insider Trade Alerts

Want to know when executives and insiders are buying or selling Quantum-Si stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

Skip Chart & View Institutional Buying and Selling Data

QSI Institutional Buying and Selling by Quarter

Quantum-Si Major Shareholders & Ownership History

Export to Excel
Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
4/29/2025 Bank of New York Mellon Corp294,906$354K0.0%+9.3%0.161%
4/25/2025 Sumitomo Mitsui Trust Group Inc.5,811,430$6.97M0.0%-2.6%3.173%
4/22/2025 EWA LLC78,688$94K0.0%N/A0.043%
4/21/2025 WestHill Financial Advisors Inc.21,727$26K0.0%N/A0.012%
4/9/2025 HBW Advisory Services LLC24,243$29K0.0%N/A0.013%
4/9/2025 Green Alpha Advisors LLC244,067$293K0.3%+53.6%0.133%
3/17/2025 Wealth 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 Company 34,850$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 TRC 23,347$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%
Trump’s treachery (Ad)

Trump’s Final Reset Inside the shocking plot to re-engineer America’s financial system…and why you need to move your money now.

Millions of Americans are about to be wiped out, while others could make a fortune… click here to ma
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%
2/4/2025 Bank 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%
1/30/2025 Rhumbline Advisers148,946$402K0.0%+3.7%0.104%
1/28/2025 Sumitomo 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%
1/17/2025 SG Americas Securities LLC67,588$182K0.0%+12.4%0.047%
1/13/2025 Green 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%
11/5/2024 Sumitomo 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%
10/7/2024 Green Alpha Advisors LLC175,055$154K0.1%+35.4%0.123%
10/3/2024 SG Americas Securities LLC60,118$53K0.0%N/A0.042%
8/12/2024XTX Topco Ltd24,161$25K0.0%N/A0.017%
7/26/2024ARK Investment Management LLC12,409,929$13.03M0.1%-2.8%8.750%
7/26/2024 Bank of New York Mellon Corp322,460$339K0.0%+3.5%0.227%
7/19/2024 Sumitomo Mitsui Trust Holdings Inc.7,863,161$8.26M0.0%-2.4%5.544%
7/10/2024 Neumann Advisory Hong Kong Ltd33,803$35K0.0%-79.7%0.024%
5/20/2024Virtu Financial LLC49,988$98K0.0%N/A0.035%
5/16/2024Jacobs Levy Equity Management Inc.506,697$998K0.0%N/A0.357%
5/15/2024Public Employees Retirement System of Ohio13,800$27K0.0%N/A0.010%
5/15/2024Price T Rowe Associates Inc. MD59,727$118K0.0%+11.1%0.042%
5/10/2024Vanguard Group Inc.5,300,685$10.44M0.0%+1.6%3.739%
5/8/2024Bleakley Financial Group LLC14,090$28K0.0%N/A0.010%
5/3/2024Nikko Asset Management Americas Inc.8,054,503$15.71M0.2%-5.6%5.681%
4/24/2024 Simplicity Wealth LLC14,090$28K0.0%N/A0.010%
4/19/2024 Sumitomo Mitsui Trust Holdings Inc.8,054,503$15.87M0.0%-5.6%5.681%
2/14/2024TIG Advisors LLC82,577$166K0.0%N/A0.058%
2/13/2024General American Investors Co. Inc.294,350$592K0.0%+146.8%0.208%
1/30/2024Cookson Peirce & Co. Inc.50,000$101K0.0%N/A0.035%
1/29/2024 Round Rock Advisors LLC13,935$28K0.0%-36.3%0.010%
1/17/2024ARK Investment Management LLC15,519,322$31.19M0.2%+7.4%10.950%
1/12/2024 SG Americas Securities LLC17,341$35K0.0%-62.8%0.012%
1/5/2024 Green Alpha Advisors LLC131,785$265K0.2%+209.2%0.093%
11/14/2023Knollwood Investment Advisory LLC300,000$498K0.2%N/A0.212%
11/13/2023WINTON GROUP Ltd62,058$103K0.0%N/A0.044%
11/8/2023State Board of Administration of Florida Retirement System35,636$59K0.0%N/A0.025%
11/8/2023Pathstone Family Office LLC26,039$43K0.0%N/A0.018%
10/30/2023 Sumitomo Mitsui Trust Holdings Inc.8,532,917$14.17M0.0%+424.5%6.021%
DOGE officially begins retirement transformation (Ad)

Elon Musk's Department of Government Efficiency ("DOGE") just announced the first-ever "fully digital retirement" process . This fired the starting gun on the biggest economic transformation in American history.

Here's everything you need to do BEFORE Elon has the chance to make his biggest move yet.
10/24/2023 Bank of New York Mellon Corp346,956$576K0.0%-2.5%0.245%
10/23/2023Commonwealth Equity Services LLC16,774$28K0.0%N/A0.012%
10/18/2023ARK Investment Management LLC14,448,217$23.98M0.2%+13.3%10.195%
10/13/2023 SG Americas Securities LLC46,566$77K0.0%N/A0.033%
10/12/2023 Neumann Advisory Hong Kong Ltd166,198$276K0.1%-13.8%0.117%
10/10/2023 Green Alpha Advisors LLC42,622$71K0.1%N/A0.030%
9/21/2023Barclays PLC49,777$89K0.0%-34.6%0.035%
8/14/2023Shay Capital LLC83,698$150K0.0%N/A0.059%
8/11/2023Guggenheim Capital LLC709,035$1.27M0.0%+14.9%0.501%
8/7/2023 Principal Financial Group Inc.41,696$75K0.0%+32.2%0.029%
(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, 73 institutional investors and hedge funds held shares of Quantum-Si. The most heavily invested institutionals were ARK Investment Management LLC ($23.89M), Nikko Asset Management Americas Inc. ($16.05M), Vanguard Group Inc. ($10.44M), Sumitomo Mitsui Trust Holdings Inc. ($8.26M), Glenview Capital Management LLC ($7.42M), Sumitomo Mitsui Trust Group Inc. ($6.97M), and Geode Capital Management LLC ($6.40M).Learn more on QSI's institutional investors.

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

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

Which institutional investors have been buying Quantum-Si stock?

Of the 61 institutional investors that purchased Quantum-Si stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Sumitomo Mitsui Trust Holdings Inc. ($7.41M), ARK Investment Management LLC ($3.82M), Jacobs Levy Equity Management Inc. ($506.70K), Renaissance Technologies LLC ($503.40K), Knollwood Investment Advisory LLC ($300K), Barclays PLC ($266.88K), and Green Alpha Advisors LLC ($262.79K).

How much institutional buying is happening at Quantum-Si?

Institutional investors have bought a total of 15,655,706 shares in the last 24 months. This purchase volume represents approximately $28.23M in transactions.

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

Of the 20 institutional investors that sold Quantum-Si stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: ARK Investment Management LLC ($3.92M), Security Benefit Life Insurance Co. KS ($3.44M), Nikko Asset Management Americas Inc. ($2.10M), Sumitomo Mitsui Trust Group Inc. ($2.05M), Sumitomo Mitsui Trust Holdings Inc. ($669.76K), Nuveen Asset Management LLC ($245.98K), and Neumann Advisory Hong Kong Ltd ($159.05K).

How much institutional selling is happening at Quantum-Si?

Institutional investors have sold a total of 13,168,342 shares in the last 24 months. This volume of shares sold represents approximately $28.03M in transactions.


Related Companies

This page (NASDAQ:QSI) was last updated on 5/2/2025 by MarketBeat.com Staff
From Our Partners
Elon’s Terrifying Warning Forces Trump To Take Action
Elon Musk has avoided two major financial crises before. He pulled Tesla and SpaceX back from the brink of col...
American Hartford Gold | Sponsored
Here’s How to Claim Your Stake in Elon’s Private Company, xAI
I predict this single breakthrough could make Elon the world’s first trillionaire — and mint more new milliona...
Brownstone Research | Sponsored
Trump Orders 'National Digital Asset Stockpile'
Billionaires Rush Into Digital Banking Token Three massive forces are converging right now, creating what c...
Crypto 101 Media | Sponsored
Warning: “DOGE Collapse” imminent
Elon Strikes Back You may already sense that the tide is turning against Elon Musk and DOGE. Just this week...
Altimetry | Sponsored
$2 Trillion Disappears Because of Fed's Secretive New Move
$2 trillion has disappeared from the US government's books. The reason why is a new, secretive move being c...
Stansberry Research | Sponsored
Gold Hits New Highs as Global Markets Spiral
When Trump took office in 2017, gold was just $1,100 an ounce. By the time he left, it had soared to $1,839. ...
Premier Gold Co | Sponsored
Gold Alert: The Truth About Fort Knox Is Coming
Owning physical gold isn’t the best way to profit. I’ve found a better way to invest in gold—one that’s alr...
Golden Portfolio | Sponsored
The Trump Dump is starting; Get out of stocks now?
The first 365 days of the Trump presidency… Will be the best time to get rich in American history.
Paradigm Press | Sponsored