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Quantum-Si Incorporated
QSI

Overview Fund Activity

131 hedge funds and large institutions have $124M invested in Quantum-Si Incorporated in 2025 Q2 according to their latest regulatory filings, with 15 funds opening new positions, 55 increasing their positions, 33 reducing their positions, and 15 closing their positions.

Holders
131
Holders Change
-3
Holders Change %
-2.24%
% of All Funds
1.76%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
15
Increased
55
Reduced
33
Closed
15
Calls
$2.33M
Puts
$2.11M
Net Calls
+$220K
Net Calls Change
+$638K

Top Buyers

1
Vanguard Group
1
Vanguard Group
Pennsylvania
$17M
2
BlackRock
2
BlackRock
New York
$21.3M
3
Northern Trust
3
Northern Trust
Illinois
$4.49M
4
NL
4
Nuveen LLC
North Carolina
$2.21M
5
Geode Capital Management
5
Geode Capital Management
Massachusetts
$6.76M

Top Sellers

1
Renaissance Technologies
1
Renaissance Technologies
New York
$175K
2
AIM
2
ARK Investment Management
Florida
$15.6M
3
XT
3
XTX Topco
Cayman Islands
$91.1K
4
Two Sigma Investments
4
Two Sigma Investments
New York
$1.11M
5
Sumitomo Mitsui Trust Group
5
Sumitomo Mitsui Trust Group
Japan
$11M
Name Market Value Shares Shares
Change 		Shares
Change %
BlackRock
1
BlackRock
New York
$21.3M 10,848,142 +1,407,899 +15%
Vanguard Group
2
Vanguard Group
Pennsylvania
$17M 8,669,661 +1,776,799 +26%
AIM
3
ARK Investment Management
Florida
$15.6M 7,960,736 -752,765 -9%
Sumitomo Mitsui Trust Group
4
Sumitomo Mitsui Trust Group
Japan
$11M 5,621,303 -190,127 -3%
NAMA
5
Nikko Asset Management Americas
New York
$11M 5,621,303 -190,127 -3%
Millennium Management
6
Millennium Management
New York
$7.41M 3,779,259 -155,026 -4%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$6.76M 3,447,738 +452,850 +15%
State Street
8
State Street
Massachusetts
$5.4M 2,756,437 +302,331 +12%
Northern Trust
9
Northern Trust
Illinois
$4.49M 2,289,456 +1,267,338 +124%
NL
10
Nuveen LLC
North Carolina
$2.21M 1,126,084 +806,984 +253%
Goldman Sachs
11
Goldman Sachs
New York
$1.75M 894,100 +452,786 +103%
UBS Group
12
UBS Group
Switzerland
$1.55M 789,570 +339,888 +76%
FI
13
Fosun International
China
$1.46M 743,935 – –
Two Sigma Investments
14
Two Sigma Investments
New York
$1.11M 564,442 -252,533 -31%
Citadel Advisors
15
Citadel Advisors
Florida
$1.09M 558,307 +419,809 +303%
Bank of America
16
Bank of America
North Carolina
$913K 465,999 +377,504 +427%
Royal Bank of Canada
17
Royal Bank of Canada
Ontario, Canada
$902K 460,289 +446,860 +3,328%
Charles Schwab
18
Charles Schwab
California
$846K 431,447 +64,003 +17%
Bank of New York Mellon
19
Bank of New York Mellon
New York
$691K 352,732 +57,826 +20%
KIA
20
Knollwood Investment Advisory
Maryland
$588K 300,000 – –
Morgan Stanley
21
Morgan Stanley
New York
$568K 289,913 +2,425 +0.8%
Jane Street
22
Jane Street
New York
$558K 284,753 +284,753 New
GCP
23
GSA Capital Partners
United Kingdom
$557K 284,363 +38,171 +16%
AllianceBernstein
24
AllianceBernstein
Tennessee
$533K 272,180 +162,000 +147%
Barclays
25
Barclays
United Kingdom
$469K 239,001 +118,113 +98%
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