Latest Institutional Purchases of Quantum Si Inc (QSI)
This list provides information on the latest institutional transactions involving Quantum Si Inc (QSI) stock that were buys. The list includes the name of the institution, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the purchase has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Nov 10, 2025
Q3 2025
|
Optiver Holding B.V.
Amsterdam, P7 |
BUY
|
- |
1.12KNew |
$1.12K - $2.39K
|
1.12K
$1.59K
|
|
|
Oct 31, 2025
Q3 2025
|
Vanguard Personalized Indexing Management, LLC
Oakland, CA |
BUY
|
- |
1.1K+ 4.57% |
$1.1K - $2.36K
|
25.2K
$35.8K
|
|
|
Nov 10, 2025
Q3 2025
|
Xponance, Inc.
|
BUY
|
- |
901+ 8.15% |
$901 - $1.93K
|
12K
$17K
|
|
|
Nov 19, 2025
Q3 2025
|
Captrust Financial Advisors
Raleigh, NC |
BUY
|
- |
518+ 1.51% |
$518 - $1.11K
|
34.8K
$49.5K
|
|
|
Nov 04, 2025
Q3 2025
|
Atlantic Union Bankshares Corp
|
BUY
|
- |
251New |
$251 - $537
|
251
$356
|
|
|
Nov 14, 2025
Q3 2025
|
Srs Capital Advisors, Inc.
Denver, CO |
BUY
|
- |
104New |
$104 - $223
|
104
$148
|
|
|
Dec 02, 2025
Q3 2025
|
Allworth Financial LP
|
BUY
|
- |
15+ 1.79% |
$15 - $32.1
|
851
$1.21K
|
|
|
Nov 14, 2025
Q3 2025
|
California State Teachers Retirement System
West Sacramento, CA |
BUY
|
- |
6+ 0.07% |
$6 - $12.8
|
8.81K
$12.5K
|
|
| Q2 2025 | |||||||
|
Nov 21, 2025
Q2 2025
|
Royal Bank Of Canada
Toronto, A6 |
BUY
|
- |
447K+ 3327.57% |
$483K - $916K
|
460K
$654K
|
|
|
Aug 14, 2025
Q2 2025
|
Ameriprise Financial Inc
Minneapolis, MN |
BUY
|
- |
223KNew |
$241K - $457K
|
223K
$317K
|
|
|
Aug 14, 2025
Q2 2025
|
Alliancebernstein L.P.
New York, NY |
BUY
|
- |
162K+ 147.03% |
$175K - $332K
|
272K
$386K
|
|
|
Aug 12, 2025
Q2 2025
|
Axq Capital, LP
Jersey City, NJ |
BUY
|
- |
57KNew |
$61.6K - $117K
|
57K
$80.9K
|
|
|
Jul 22, 2025
Q2 2025
|
Gsa Capital Partners LLP
London, X0 |
BUY
|
- |
38.2K+ 15.5% |
$41.2K - $78.3K
|
284K
$404K
|
|
|
Aug 13, 2025
Q2 2025
|
Cerity Partners LLC
New York, NY |
BUY
|
- |
14.9KNew |
$16.1K - $30.5K
|
14.9K
$21.1K
|
|
|
Aug 06, 2025
Q2 2025
|
Flagship Private Wealth, LLC
|
BUY
|
- |
14.2KNew |
$15.3K - $29K
|
14.2K
$20.1K
|
|
|
Aug 12, 2025
Q2 2025
|
Prudential Financial Inc
Newark, NJ |
BUY
|
- |
12.9KNew |
$13.9K - $26.3K
|
12.9K
$18.2K
|
|
|
Aug 12, 2025
Q2 2025
|
American Century Companies Inc
Kansas City, MO |
BUY
|
- |
12KNew |
$13K - $24.7K
|
12K
$17.1K
|
|
|
Jul 24, 2025
Q2 2025
|
Callan Family Office, LLC
Radnor, PA |
BUY
|
- |
10.4KNew |
$11.2K - $21.3K
|
10.4K
$14.7K
|
|
|
Jul 31, 2025
Q2 2025
|
Ground Swell Capital, LLC
Folly Beach, SC |
BUY
|
- |
10.1KNew |
$10.9K - $20.7K
|
10.1K
$14.3K
|
|
|
Aug 08, 2025
Q2 2025
|
Kingsview Wealth Management, LLC
Grants Pass, OR |
BUY
|
- |
10K+ 99.88% |
$10.8K - $20.5K
|
20K
$28.4K
|
|
|
Aug 14, 2025
Q2 2025
|
Headlands Technologies LLC
Chicago, IL |
BUY
|
- |
9K+ 2768.31% |
$9.72K - $18.4K
|
9.32K
$13.2K
|
|
|
Aug 12, 2025
Q2 2025
|
Ameritas Investment Partners, Inc.
Lincoln, NE |
BUY
|
- |
4.5K+ 45.38% |
$4.85K - $9.21K
|
14.4K
$20.4K
|
|
|
Aug 08, 2025
Q2 2025
|
Mtm Investment Management, LLC
Spartanburg, SC |
BUY
|
- |
4.13KNew |
$4.46K - $8.46K
|
4.13K
$5.86K
|
|
|
Aug 12, 2025
Q2 2025
|
Legal & General Group PLC
London, X0 |
BUY
|
- |
3.57K+ 38.37% |
$3.85K - $7.31K
|
12.9K
$18.3K
|
|
|
Aug 14, 2025
Q2 2025
|
Talon Private Wealth, LLC
The Villages, FL |
BUY
|
- |
2KNew |
$2.16K - $4.1K
|
2K
$2.84K
|
|
|
Aug 11, 2025
Q2 2025
|
Principal Securities, Inc.
Des Moines, IA |
BUY
|
- |
1.73K+ 35.2% |
$1.87K - $3.54K
|
6.64K
$9.43K
|
|
|
Jul 09, 2025
Q2 2025
|
Dlk Investment Management, LLC
Solana Beach, CA |
BUY
|
- |
750+ 3.95% |
$810 - $1.54K
|
19.8K
$28K
|
|
|
Aug 08, 2025
Q2 2025
|
Pnc Financial Services Group, Inc.
Pittsburgh, PA |
BUY
|
- |
59+ 12.07% |
$63.7 - $121
|
548
$778
|
|
|
Aug 12, 2025
Q2 2025
|
Concourse Financial Group Securities, Inc.
Birmingham, AL |
BUY
|
- |
0New |
$0 - $0
|
0
$0
|
|
| Q1 2025 | |||||||
|
May 15, 2025
Q1 2025
|
David A. Siegel
Two Sigma Advisers, LP | New York, Ny
|
BUY
|
- |
78.9KNew |
$89.9K - $338K
|
78.9K
$112K
|
|
|
May 15, 2025
Q1 2025
|
Sculptor Capital LP
New York, NY |
BUY
|
- |
78.2KNew |
$89.1K - $335K
|
78.2K
$111K
|
|
|
May 15, 2025
Q1 2025
|
Sculptor Capital LP
New York, NY |
BUY
|
PUT |
78.2KNew |
$89.1K - $335K
|
78.2K
$111K
|
|
|
Apr 29, 2025
Q1 2025
|
Callan Capital, LLC
La Jolla, CA |
BUY
|
- |
50.2K+ 464.35% |
$57.2K - $215K
|
61K
$86.5K
|
|
|
May 12, 2025
Q1 2025
|
Virtu Financial LLC
New York, NY |
BUY
|
- |
34.8KNew |
$39.7K - $149K
|
34.8K
$49.5K
|
|
|
Apr 21, 2025
Q1 2025
|
West Hill Financial Advisors, Inc.
|
BUY
|
- |
21.7KNew |
$24.8K - $93.2K
|
21.7K
$30.9K
|
|
|
May 12, 2025
Q1 2025
|
State Board Of Administration Of Florida Retirement System
|
BUY
|
- |
12.3KNew |
$14K - $52.8K
|
12.3K
$17.5K
|
|
|
May 08, 2025
Q1 2025
|
Jefferies Financial Group Inc.
New York, NY |
BUY
|
PUT |
12.3KNew |
$14K - $52.8K
|
12.3K
$17.5K
|
|
|
May 15, 2025
Q1 2025
|
Sih Partners, Lllp
Wilmington, DE |
BUY
|
- |
10.6KNew |
$12.1K - $45.6K
|
10.6K
$15.1K
|
|
|
May 15, 2025
Q1 2025
|
Glen Eagle Advisors, LLC
Kingston, NJ |
BUY
|
- |
10KNew |
$11.4K - $42.9K
|
10K
$14.2K
|
|
|
May 14, 2025
Q1 2025
|
Cibc Private Wealth Group, LLC
|
BUY
|
- |
10KNew |
$11.4K - $42.9K
|
10K
$14.2K
|
|
|
May 14, 2025
Q1 2025
|
Dash Acquisitions Inc.
|
BUY
|
- |
10KNew |
$11.4K - $42.9K
|
10K
$14.2K
|
|
|
Apr 16, 2025
Q1 2025
|
Ballew Advisors, Inc
|
BUY
|
- |
10KNew |
$11.4K - $42.9K
|
10K
$14.2K
|
|
|
May 07, 2025
Q1 2025
|
N.E.W. Advisory Services LLC
|
BUY
|
- |
3.85KNew |
$4.39K - $16.5K
|
3.85K
$5.47K
|
|
|
May 06, 2025
Q1 2025
|
Abel Hall, LLC
Baton Rouge, LA |
BUY
|
- |
1.58K+ 15.11% |
$1.8K - $6.76K
|
12K
$17.1K
|
|
|
May 09, 2025
Q1 2025
|
Core Cap Advisors, LLC
Southfield, MI |
BUY
|
- |
1.27K+ 268.0% |
$1.45K - $5.46K
|
1.75K
$2.48K
|
|
|
Apr 25, 2025
Q1 2025
|
Amalgamated Bank
New York, NY |
BUY
|
- |
972+ 30.66% |
$1.11K - $4.17K
|
4.14K
$5.88K
|
|
|
Apr 28, 2025
Q1 2025
|
Uma Financial Services, Inc.
|
BUY
|
- |
687New |
$783 - $2.95K
|
687
$976
|
|
|
Apr 14, 2025
Q1 2025
|
Bangor Savings Bank
Bangor, ME |
BUY
|
- |
400New |
$456 - $1.72K
|
400
$568
|
|
|
May 13, 2025
Q1 2025
|
True Wealth Design, LLC
Akron, OH |
BUY
|
- |
2New |
$2.28 - $8.58
|
2
$2.84
|
|
| Q4 2024 | |||||||
|
Feb 14, 2025
Q4 2024
|
Centiva Capital, LP
New York, NY |
BUY
|
- |
143KNew |
$90.2K - $515K
|
143K
$203K
|
|