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 13, 2025
Q3 2025
|
Jane Street Group, LLC
New York, NY |
BUY
|
- |
1.33M+ 465.41% |
$1.33M - $2.84M
|
1.61M
$2.29M
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
BUY
|
- |
1.06M+ 106.99% |
$1.06M - $2.26M
|
2.04M
$2.9M
|
|
|
Nov 13, 2025
Q3 2025
|
Peak6 LLC
Chicago, IL |
BUY
|
CALL |
987KNew |
$987K - $2.11M
|
987K
$1.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Squarepoint Ops LLC
New York, NY |
BUY
|
- |
613KNew |
$613K - $1.31M
|
613K
$871K
|
|
|
Nov 12, 2025
Q3 2025
|
Geode Capital Management, LLC
Boston, MA |
BUY
|
- |
299K+ 8.68% |
$299K - $641K
|
3.75M
$5.32M
|
|
|
Nov 12, 2025
Q3 2025
|
Group One Trading, L.P.
Chicago, IL |
BUY
|
- |
243K+ 180.6% |
$243K - $520K
|
378K
$536K
|
|
|
Nov 04, 2025
Q3 2025
|
Imc Chicago, LLC
|
BUY
|
- |
185KNew |
$185K - $396K
|
185K
$263K
|
|
|
Oct 29, 2025
Q3 2025
|
Verdence Capital Advisors LLC
Hunt Valley, MD |
BUY
|
- |
164KNew |
$164K - $351K
|
164K
$233K
|
|
|
Nov 14, 2025
Q3 2025
|
Xtx Topco LTD
London, X0 |
BUY
|
- |
104K+ 223.91% |
$104K - $223K
|
151K
$214K
|
|
|
Nov 13, 2025
Q3 2025
|
Invesco Ltd.
Atlanta, GA |
BUY
|
- |
100K+ 51.31% |
$100K - $215K
|
296K
$420K
|
|
|
Nov 05, 2025
Q3 2025
|
Iq Eq Fund Management (Ireland) LTD
|
BUY
|
- |
72.3K+ 61.93% |
$72.3K - $155K
|
189K
$269K
|
|
|
Nov 14, 2025
Q3 2025
|
Bridgeway Capital Management, LLC
Houston, TX |
BUY
|
- |
65K+ 33.15% |
$65K - $139K
|
261K
$371K
|
|
|
Nov 14, 2025
Q3 2025
|
State Street Corp
Boston, MA |
BUY
|
- |
61.1K+ 2.21% |
$61.1K - $131K
|
2.82M
$4M
|
|
|
Nov 14, 2025
Q3 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
BUY
|
PUT |
60.6K+ 17.22% |
$60.6K - $130K
|
413K
$586K
|
|
|
Nov 19, 2025
Q3 2025
|
Caitong International Asset Management Co., LTD
Hong Kong, K3 |
BUY
|
- |
59.8KNew |
$59.8K - $128K
|
59.8K
$84.9K
|
|
|
Nov 12, 2025
Q3 2025
|
Simplex Trading, LLC
|
BUY
|
- |
48.5K+ 46.0% |
$48.5K - $104K
|
154K
$219K
|
|
|
Nov 04, 2025
Q3 2025
|
Jones Financial Companies Lllp
|
BUY
|
- |
46.6K+ 99.36% |
$46.6K - $99.7K
|
93.5K
$133K
|
|
|
Nov 07, 2025
Q3 2025
|
Vanguard Group Inc
Valley Forge, PA |
BUY
|
- |
44.8K+ 0.52% |
$44.8K - $96K
|
8.71M
$12.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Engineers Gate Manager LP
New York, NY |
BUY
|
- |
41.5KNew |
$41.5K - $88.7K
|
41.5K
$58.9K
|
|
|
Nov 10, 2025
Q3 2025
|
Charles Schwab Investment Management Inc
San Francisco, CA |
BUY
|
- |
36.6K+ 8.49% |
$36.6K - $78.4K
|
468K
$665K
|
|
|
Nov 13, 2025
Q3 2025
|
Wells Fargo & Company
San Francisco, CA |
BUY
|
- |
34.2K+ 33.66% |
$34.2K - $73.3K
|
136K
$193K
|
|
|
Nov 14, 2025
Q3 2025
|
Northern Trust Corp
Chicago, IL |
BUY
|
- |
33.6K+ 1.47% |
$33.6K - $71.9K
|
2.32M
$3.3M
|
|
|
Nov 14, 2025
Q3 2025
|
Shay Capital LLC
New York, NY |
BUY
|
- |
24.9K+ 19.24% |
$24.9K - $53.4K
|
155K
$219K
|
|
|
Oct 14, 2025
Q3 2025
|
Hbk Sorce Advisory LLC
Erie, PA |
BUY
|
- |
21.4KNew |
$21.4K - $45.9K
|
21.4K
$30.4K
|
|
|
Oct 23, 2025
Q3 2025
|
Jtc Employer Solutions Trustee LTD
|
BUY
|
- |
21.2K+ 158.92% |
$21.2K - $45.4K
|
34.5K
$49K
|
|
|
Oct 16, 2025
Q3 2025
|
Elite Life Management LLC
Erie, PA |
BUY
|
- |
20.6KNew |
$20.6K - $44.1K
|
20.6K
$29.3K
|
|
|
Nov 14, 2025
Q3 2025
|
Balyasny Asset Management LLC
Chicago, IL |
BUY
|
- |
19.8KNew |
$19.8K - $42.4K
|
19.8K
$28.1K
|
|
|
Nov 10, 2025
Q3 2025
|
Alpha Core Capital LLC
La Jolla, CA |
BUY
|
- |
18.9K+ 22.51% |
$18.9K - $40.4K
|
103K
$146K
|
|
|
Nov 12, 2025
Q3 2025
|
Cibc Bancorp Usa Inc.
Chicago, IL |
BUY
|
- |
16.7KNew |
$16.7K - $35.8K
|
16.7K
$23.8K
|
|
|
Nov 06, 2025
Q3 2025
|
Rhumbline Advisers
Boston, MA |
BUY
|
- |
16K+ 7.84% |
$16K - $34.2K
|
220K
$312K
|
|
|
Nov 13, 2025
Q3 2025
|
Jump Financial, LLC
Chicago, IL |
BUY
|
- |
15.1KNew |
$15.1K - $32.3K
|
15.1K
$21.4K
|
|
|
Nov 12, 2025
Q3 2025
|
Police & Firemen'S Retirement System Of New Jersey
Trenton, NJ |
BUY
|
- |
15K+ 48.29% |
$15K - $32.2K
|
46.2K
$65.6K
|
|
|
Nov 13, 2025
Q3 2025
|
Deutsche Bank Ag\
Frankfurt Am Main, 2M |
BUY
|
- |
13.6K+ 13.75% |
$13.6K - $29K
|
112K
$159K
|
|
|
Nov 04, 2025
Q3 2025
|
Principal Financial Group Inc
Des Moines, IA |
BUY
|
- |
11.2KNew |
$11.2K - $23.9K
|
11.2K
$15.8K
|
|
|
Oct 22, 2025
Q3 2025
|
Commonwealth Equity Services, LLC
|
BUY
|
- |
10.7K+ 41.8% |
$10.7K - $22.8K
|
36.2K
$51.4K
|
|
|
Nov 05, 2025
Q3 2025
|
Capital Investment Advisory Services, LLC
|
BUY
|
- |
10K+ 100.0% |
$10K - $21.4K
|
20K
$28.4K
|
|
|
Nov 03, 2025
Q3 2025
|
Hollencrest Capital Management
|
BUY
|
- |
10K+ 40.0% |
$10K - $21.4K
|
35K
$49.7K
|
|
|
Oct 23, 2025
Q3 2025
|
Sg Americas Securities, LLC
|
BUY
|
- |
9.93K+ 30.84% |
$9.93K - $21.2K
|
42.1K
$59.8K
|
|
|
Nov 04, 2025
Q3 2025
|
Sbi Securities Co., Ltd.
Tokyo, M0 |
BUY
|
- |
7.48K+ 28.59% |
$7.48K - $16K
|
33.6K
$47.7K
|
|
|
Nov 12, 2025
Q3 2025
|
Sterling Capital Management LLC
Charlotte, NC |
BUY
|
- |
7.44K+ 219.26% |
$7.44K - $15.9K
|
10.8K
$15.4K
|
|
|
Nov 07, 2025
Q3 2025
|
Jpmorgan Chase & CO
New York, NY |
BUY
|
- |
5.63K+ 9.76% |
$5.63K - $12K
|
63.3K
$89.9K
|
|
|
Nov 12, 2025
Q3 2025
|
Lpl Financial LLC
Fort Mill, SC |
BUY
|
- |
5.17K+ 22.2% |
$5.17K - $11.1K
|
28.5K
$40.4K
|
|
|
Oct 21, 2025
Q3 2025
|
Wealth Management Associates, Inc.
Cherry Hill, NJ |
BUY
|
- |
4K+ 14.84% |
$4K - $8.56K
|
31K
$43.9K
|
|
|
Nov 13, 2025
Q3 2025
|
Russell Investments Group, Ltd.
|
BUY
|
- |
2.11K+ 7.04% |
$2.11K - $4.5K
|
32K
$45.4K
|
|
|
Nov 14, 2025
Q3 2025
|
Mercer Global Advisors Inc
Denver, CO |
BUY
|
- |
1.73K+ 6.84% |
$1.73K - $3.7K
|
27K
$38.3K
|
|
|
Nov 12, 2025
Q3 2025
|
Victory Capital Management Inc
|
BUY
|
- |
1.26K+ 7.76% |
$1.26K - $2.69K
|
17.5K
$24.8K
|
|
|
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
|
|