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Quantum-Si Incorporated
QSI

Overview Fund Activity

134 hedge funds and large institutions have $69.2M invested in Quantum-Si Incorporated in 2025 Q1 according to their latest regulatory filings, with 38 funds opening new positions, 39 increasing their positions, 35 reducing their positions, and 21 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
134
Holders Change
+14
Holders Change %
+11.67%
% of All Funds
1.82%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
38
Increased
39
Reduced
35
Closed
21
Calls
$1.48M
Puts
$1.89M
Net Calls
-$418K
Net Calls Change
-$3.93M

Top Buyers

1
Millennium Management
Millennium Management
New York
+$4.72M
2
Vanguard Group
Vanguard Group
Pennsylvania
+$1.68M
3
BlackRock
BlackRock
New York
+$1.2M
4
Two Sigma Investments
Two Sigma Investments
New York
+$797K
5
Geode Capital Management
Geode Capital Management
Massachusetts
+$752K

Top Sellers

1
Morgan Stanley
Morgan Stanley
New York
-$3.83M
2
Goldman Sachs
Goldman Sachs
New York
-$673K
3
CC
Centiva Capital
New York
-$387K
4
Simplex Trading
Simplex Trading
Illinois
-$314K
5
Susquehanna International Group
Susquehanna International Group
Pennsylvania
-$247K
Name Holding Trade Value Shares
Change 		Shares
Change %
BlackRock
1
BlackRock
New York
$11.3M +$1.2M +1,002,596 +12%
AIM
2
ARK Investment Management
Florida
$10.5M -$162K -135,149 -2%
Vanguard Group
3
Vanguard Group
Pennsylvania
$8.27M +$1.68M +1,401,109 +26%
Sumitomo Mitsui Trust Group
4
Sumitomo Mitsui Trust Group
Japan
$6.97M -$185K -153,778 -3%
NAMA
5
Nikko Asset Management Americas
New York
$6.92M -$183K -153,778 -3%
Millennium Management
6
Millennium Management
New York
$4.72M +$4.72M +3,934,285 New
Geode Capital Management
7
Geode Capital Management
Massachusetts
$3.59M +$752K +626,512 +26%
State Street
8
State Street
Massachusetts
$2.94M +$58.9K +49,087 +2%
Northern Trust
9
Northern Trust
Illinois
$1.23M +$217K +180,972 +22%
Renaissance Technologies
10
Renaissance Technologies
New York
$1.05M +$392K +326,800 +60%
Two Sigma Investments
11
Two Sigma Investments
New York
$980K +$797K +664,292 +435%
Susquehanna International Group
12
Susquehanna International Group
Pennsylvania
$956K -$247K -205,943 -21%
FI
13
Fosun International
China
$893K – – –
UBS Group
14
UBS Group
Switzerland
$540K -$171K -142,430 -24%
Goldman Sachs
15
Goldman Sachs
New York
$530K -$673K -560,816 -56%
XT
16
XTX Topco
Cayman Islands
$443K +$148K +123,383 +50%
Charles Schwab
17
Charles Schwab
California
$441K +$71.3K +59,423 +19%
NL
18
Nuveen LLC
North Carolina
$383K +$383K +319,100 New
KIA
19
Knollwood Investment Advisory
Maryland
$360K – – –
Bank of New York Mellon
20
Bank of New York Mellon
New York
$354K +$30.1K +25,099 +9%
Morgan Stanley
21
Morgan Stanley
New York
$345K -$3.83M -3,192,980 -92%
GCP
22
GSA Capital Partners
United Kingdom
$295K -$153K -128,086 -34%
GAA
23
Green Alpha Advisors
Colorado
$293K +$102K +85,209 +54%
Pathstone Holdings
24
Pathstone Holdings
New Jersey
$257K +$103K +85,725 +67%
BCM
25
Bridgeway Capital Management
Texas
$235K -$120K -100,000 -34%
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