Institutional Ownership Quantum Si Inc (QSI)
This table provides information about the institutional ownership of Quantum Si Inc (QSI). We have compiled data on the 150 institutions that hold shares in the stock, with a total of 51.9 Million shares, which have been reported (via 13F filing form) to have a value of $62.3 Million.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Cathie Wood
Ark Investment Management LLC | St. Petersburg, Fl
|
May 07, 2025 Q1 2025 |
8,713,501
shares
|
$10.5 Million
0.11% of portfolio
|
Q1 2025
Reduced 1.53%
|
|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
7,000,884
shares
|
$8.4 Million
0.0% of portfolio
|
Q2 2024
Reduced 3.2%
|
|
|
Vanguard Group Inc
Valley Forge, PA |
May 09, 2025 Q1 2025 |
6,892,862
shares
|
$8.27 Million
0.0% of portfolio
|
Q1 2025
Added 25.51%
|
|
|
Sumitomo Mitsui Trust Holdings, Inc.
|
Apr 25, 2025 Q1 2025 |
5,811,430
shares
|
$6.97 Million
0.01% of portfolio
|
Q1 2025
Reduced 2.58%
|
|
|
Nikko Asset Management Americas, Inc.
|
May 07, 2025 Q1 2025 |
5,811,430
shares
|
$6.97 Million
0.09% of portfolio
|
Q1 2025
Reduced 2.58%
|
|
|
Israel Englander
Millennium Management LLC | New York, Ny
|
May 15, 2025 Q1 2025 |
3,934,285
shares
|
$4.72 Million
0.0% of portfolio
|
Q1 2025
New holding
|
|
|
Geode Capital Management, LLC
Boston, MA |
May 13, 2025 Q1 2025 |
2,994,888
shares
|
$3.59 Million
0.0% of portfolio
|
Q1 2025
Added 26.45%
|
|
|
State Street Corp
Boston, MA |
May 15, 2025 Q1 2025 |
2,454,106
shares
|
$2.94 Million
0.0% of portfolio
|
Q1 2025
Added 2.04%
|
|
|
Northern Trust Corp
Chicago, IL |
May 13, 2025 Q1 2025 |
1,022,118
shares
|
$1.23 Million
0.0% of portfolio
|
Q1 2025
Added 21.51%
|
|
|
Jim Simons
Renaissance Technologies LLC | New York, Ny
|
May 14, 2025 Q1 2025 |
871,756
shares
|
$1.05 Million
0.0% of portfolio
|
Q1 2025
Added 59.97%
|
|
|
Two Sigma Investments, LP
New York, NY |
May 15, 2025 Q1 2025 |
816,975
shares
|
$980,370
0.0% of portfolio
|
Q1 2025
Added 435.08%
|
|
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
May 14, 2025 Q1 2025 |
796,930
shares
|
$956,316
0.0% of portfolio
|
Q1 2025
Reduced 20.54%
|
|
|
Fosun International LTD
|
May 14, 2025 Q1 2025 |
743,935
shares
|
$892,722
0.96% of portfolio
|
Q4 2021
Reduced -0.0%
|
|
|
Foresite Capital Opportunity Management V, LLC
Larkspur, CA |
Nov 14, 2022 Q3 2022 |
633,626
shares
|
$760,351
5.23% of portfolio
|
Q2 2022
Reduced 60.35%
|
|
|
Ubs Group Ag
|
May 13, 2025 Q1 2025 |
449,682
shares
|
$539,618
0.0% of portfolio
|
Q1 2025
Reduced 24.05%
|
|
|
Goldman Sachs Group Inc
New York, NY |
May 09, 2025 Q1 2025 |
441,314
shares
|
$529,576
0.0% of portfolio
|
Q1 2025
Reduced 55.96%
|
|
|
Xtx Topco LTD
London, X0 |
May 07, 2025 Q1 2025 |
368,968
shares
|
$442,761
0.02% of portfolio
|
Q1 2025
Added 50.24%
|
|
|
Charles Schwab Investment Management Inc
San Francisco, CA |
May 09, 2025 Q1 2025 |
367,444
shares
|
$440,932
0.0% of portfolio
|
Q1 2025
Added 19.29%
|
|
|
Nuveen Asset Management, LLC
Chicago, IL |
Feb 14, 2025 Q4 2024 |
319,100
shares
|
$382,920
0.0% of portfolio
|
Q4 2024
Reduced 43.53%
|
|
|
Nuveen, LLC
Charlotte, NC |
May 12, 2025 Q1 2025 |
319,100
shares
|
$382,920
0.0% of portfolio
|
Q1 2025
New holding
|
|
|
Knollwood Investment Advisory, LLC
Hunt Valley, MD |
May 14, 2025 Q1 2025 |
300,000
shares
|
$360,000
0.04% of portfolio
|
Q1 2023
New holding
|
|
|
Morgan Stanley
New York, NY |
May 15, 2025 Q1 2025 |
287,488
shares
|
$344,985
0.0% of portfolio
|
Q1 2025
Reduced 91.74%
|
|
|
Gsa Capital Partners LLP
London, X0 |
May 08, 2025 Q1 2025 |
246,192
shares
|
$295,430
0.03% of portfolio
|
Q1 2025
Reduced 34.22%
|
|
|
Green Alpha Advisors, LLC
|
Apr 09, 2025 Q1 2025 |
244,067
shares
|
$292,880
0.39% of portfolio
|
Q1 2025
Added 53.64%
|
|
|
Pathstone Holdings, LLC
Englewood, NJ |
May 15, 2025 Q1 2025 |
214,309
shares
|
$257,170
0.0% of portfolio
|
Q1 2025
Added 66.67%
|