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Quantum-Si Incorporated (QSI)
NASDAQ:QSI
US Market
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Quantum-Si (QSI) Ownership - Who Owns Quantum-Si?

1,862 Followers

Quantum-Si (QSI) Ownership Overview

22.76%6.81%9.27%12.04%49.12%
22.76% Insiders
9.27% Other Institutional Investors
12.04% ETFs
49.12% Public Companies and
Individual Investors
The ownership structure of Quantum-Si (QSI) stock is a mix of institutional, retail, and individual investors. Approximately 28.12% of the company’s stock is owned by Institutional Investors, 22.76% is owned by Insiders, and 49.12% 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 16.08% of the company’s stock is owned by Institutional Investors, 22.76% is owned by Insiders, and 12.04% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date
Name
Activity
Value
Apr 22, 2026
xxxxxxxxxxxxx
$166587
Apr 22, 2026
xxxxxxxxxxxxx
$74389
Mar 24, 2026
xxxxxxxxxxxxx
$19730
Mar 24, 2026
xxxxxxxxxxxxx
$7182

Recent Hedge Fund Trading Activity

Date
Firm
Activity
Value
Mar 31, 2024
xxxxxxxxxxxxx
$5324268
Mar 31, 2024
xxxxxxxxxxxxx
$9458

Top Shareholders

Holder
# of Shares
Type
% Holding
Value
33,644,178Insider17.01%38,017,921
8,390,914Institution4.24%9,481,733
7,881,850Institution3.98%8,906,491
6,878,899Institution3.48%7,773,156
6,870,268Institution3.47%7,763,403
6,637,230Institution3.36%7,500,070
3,692,423Insider1.87%4,172,438
1,770,464Institution0.89%2,000,624
1,732,582Insider0.88%1,957,818
1,347,814Institution0.68%1,523,030

Top Mutual Fund Holders

Holder
# of Shares
Type
% Holding
Value
6,870,268Institution3.47%7,763,403
1,770,464Institution0.89%2,000,624
1,347,814Institution0.68%1,523,030
905,839Institution0.46%1,023,598
639,421Institution0.32%722,546
493,459Institution0.25%557,609
468,088Institution0.24%528,939
255,000Institution0.13%288,150
107,201Institution0.05%121,137
83,559Institution0.04%94,422

Top ETF Holders

Holder
# of Shares
Type
% Holding
Value
6,333,576Institution3.20%7,156,941
4,874,730Institution2.46%3,773,041
3,988,047Institution2.02%3,766,710
1,995,538Institution1.01%1,544,546
1,465,847Institution0.74%1,384,492
1,280,769Institution0.65%1,209,686
834,752Institution0.42%646,098
541,836Institution0.27%419,381
435,317Institution0.22%411,157
424,104Institution0.21%400,566

FAQ

Who Owns Quantum-Si Incorporated (QSI)?
According to the latest TipRanks data, approximately 9.27% of the company's stock is held by institutional investors, 22.76% is held by insiders, and 49.12% 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 9.27% 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 49.12% 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.