Quantum-Si Incorporated (QSI)
:QSI
US Market
Advertisement

Quantum-Si (QSI) Ownership - Who Owns Quantum-Si?

Compare
1,771 Followers

Quantum-Si (QSI) Ownership Overview

21.57%7.01%9.77%11.36%50.30%
21.57% Insiders
9.77% Other Institutional Investors
11.36% ETFs
50.30% Public Companies and Individual Investors
The ownership structure of Quantum-Si (QSI) stock is a mix of institutional, retail, and individual investors. Approximately 28.13% of the company’s stock is owned by Institutional Investors, 21.57% is owned by Insiders, and 50.30% is owned by Public Companies and Individual Investors.
The ownership structure of Quantum-Si (QSI) stock is a mix of institutional, retail, and individual investors. Approximately 16.77% of the company’s stock is owned by Institutional Investors, 21.57% is owned by Insiders, and 11.36% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date
Name
Activity
Value
Sep 24, 2025
xxxxxxxxxxxxx
$61175
Sep 24, 2025
xxxxxxxxxxxxx
$17755
Sep 24, 2025
xxxxxxxxxxxxx
$35228
Sep 24, 2025
xxxxxxxxxxxxx
$12820

Recent Hedge Fund Trading Activity

Date
Firm
Activity
Value
Sep 30, 2025
xxxxxxxxxxxxx
$15603042

Top Shareholders

Holder
# of Shares
Type
% Holding
Value
33,644,178Insider17.20%46,765,407
8,095,960Institution4.14%11,253,384
7,624,042Institution3.90%10,597,418
7,416,548Institution3.79%10,309,002
7,368,392Institution3.77%10,242,065
5,975,839Institution3.06%8,306,416
2,601,725Insider1.33%3,616,398
1,603,104Institution0.82%2,228,315
1,414,448Institution0.72%1,966,083
1,317,986Institution0.67%1,832,001

Top Mutual Fund Holders

Holder
# of Shares
Type
% Holding
Value
7,416,548Institution3.79%10,309,002
1,603,104Institution0.82%2,228,315
1,414,448Institution0.72%1,966,083
1,317,986Institution0.67%1,832,001
757,160Institution0.39%1,052,452
431,447Institution0.22%599,711
190,000Institution0.10%264,100
69,556Institution0.04%96,683
68,080Institution0.03%94,631
67,433Institution0.03%93,732

Top ETF Holders

Holder
# of Shares
Type
% Holding
Value
7,045,621Institution3.60%9,793,413
4,889,572Institution2.50%6,894,297
3,855,591Institution1.97%5,359,271
1,729,958Institution0.88%2,439,241
1,324,035Institution0.68%1,840,409
748,233Institution0.38%1,055,009
618,166Institution0.32%976,702
404,192Institution0.21%561,827
376,085Institution0.19%522,758
247,378Institution0.13%343,855

FAQ

Who Owns Quantum-Si Incorporated (QSI)?
According to the latest TipRanks data, approximately 9.77% of the company's stock is held by institutional investors, 21.57% is held by insiders, and 50.30% is held by retail investors.
    What percentage of Quantum-Si Incorporated (QSI) stock is held by institutional investors?
    According to the latest TipRanks data, approximately 9.77% of Quantum-Si Incorporated (QSI) stock is held by institutional investors.
      What percentage of Quantum-Si Incorporated (QSI) stock is held by retail investors?
      According to the latest TipRanks data, approximately 50.30% of Quantum-Si Incorporated (QSI) stock is held by retail investors.
        Who owns the most shares of Quantum-Si Incorporated (QSI)?
        JONATHAN M ROTHBERG owns the most shares of Quantum-Si Incorporated (QSI).
          What is the significance of the ownership structure for a publicly traded company?
          The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.
            What am I Missing?
            Make informed decisions based on Top Analysts' activity
            Know what industry insiders are buying
            Get actionable alerts from top Wall Street Analysts
            Find out before anyone else which stock is going to shoot up
            Get powerful stock screeners & detailed portfolio analysis