Quantum Si Inc QSI
Institutional shares held
60.9 Million
781K
calls
1.01M
puts
Total value of holdings
$129M
$1.66M
calls
$2.15M
puts
Market Cap
$253M
119,433,000
Shares Out.
Institutional ownership
50.97%
# of Institutions
154
We take great care to ensure that the data presented and summarized in this overview for Quantum-Si Inc is accurate and up-to-date, based on a comprehensive analysis of 13F filing forms for institutional ownership and form 4 filings for insider transactions. Please note that this data may differ from other sources and should not be relied upon as the sole basis for investment decisions.
Top Institutions Holding QSI
View all-
Vanguard Group Inc Valley Forge, PA8.67MShares$18.4 Million0.0% of portfolio
-
Cathie Wood Ark Investment Management LLC | St. Petersburg, Fl7.96MShares$16.9 Million0.13% of portfolio
-
Black Rock Inc. New York, NY7MShares$14.8 Million0.0% of portfolio
-
Nikko Asset Management Americas, Inc.5.62MShares$11.9 Million0.12% of portfolio
-
Sumitomo Mitsui Trust Holdings, Inc.5.22MShares$11.1 Million0.0% of portfolio
-
Israel Englander Millennium Management LLC | New York, Ny3.78MShares$8.01 Million0.0% of portfolio
-
Geode Capital Management, LLC Boston, MA3.45MShares$7.31 Million0.0% of portfolio
-
State Street Corp Boston, MA2.76MShares$5.84 Million0.0% of portfolio
-
Northern Trust Corp Chicago, IL2.29MShares$4.85 Million0.0% of portfolio
-
Nuveen, LLC Charlotte, NC1.13MShares$2.39 Million0.0% of portfolio
Latest Institutional Activity in QSI
Top Purchases
Top Sells
About QSI
Quantum-Si incorporated, a life sciences company, develops a single molecule detection platform for sample preparation and sequencing. It offers a proprietary single molecule detection platform for use in semiconductor industry to field proteomics to enable next generation protein sequencing. The company was incorporated in 2013 is based in Guilford, Connecticut.
Insider Transactions at QSI
Insider Transaction List
View all| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Oct 16
2025
|
Jonathan M Rothberg |
SELL
Open market or private sale
|
Indirect |
26,095
-1.35%
|
$78,285
$3.07 P/Share
|
|
Sep 23
2025
|
Todd C. Bennett Chief Commercial Officer |
SELL
Open market or private sale
|
Direct |
18,482
-2.64%
|
$18,482
$1.64 P/Share
|
|
Sep 23
2025
|
Jeffry R. Keyes Chief Financial Officer |
SELL
Open market or private sale
|
Direct |
3,873
-0.33%
|
$3,873
$1.64 P/Share
|
|
Sep 23
2025
|
John S. Vieceli Chief Product Officer |
SELL
Open market or private sale
|
Direct |
9,843
-1.18%
|
$9,843
$1.64 P/Share
|
|
Sep 23
2025
|
Jeffrey Alan Hawkins President & CEO |
SELL
Open market or private sale
|
Direct |
10,643
-0.41%
|
$10,643
$1.64 P/Share
|
|
Sep 23
2025
|
Christian La Pointe GC & Corp. Secretary |
SELL
Open market or private sale
|
Direct |
5,364
-0.56%
|
$5,364
$1.64 P/Share
|
|
Sep 22
2025
|
Todd C. Bennett Chief Commercial Officer |
SELL
Open market or private sale
|
Direct |
18,482
-2.57%
|
$18,482
$1.68 P/Share
|
|
Sep 22
2025
|
Jeffry R. Keyes Chief Financial Officer |
SELL
Open market or private sale
|
Direct |
3,873
-0.33%
|
$3,873
$1.68 P/Share
|
|
Sep 22
2025
|
John S. Vieceli Chief Product Officer |
SELL
Open market or private sale
|
Direct |
9,843
-1.17%
|
$9,843
$1.68 P/Share
|
|
Sep 22
2025
|
Jeffrey Alan Hawkins President & CEO |
SELL
Open market or private sale
|
Direct |
10,643
-0.41%
|
$10,643
$1.68 P/Share
|
|
Sep 22
2025
|
Christian La Pointe GC & Corp. Secretary |
SELL
Open market or private sale
|
Direct |
5,364
-0.55%
|
$5,364
$1.68 P/Share
|
|
Jun 23
2025
|
John S. Vieceli Chief Product Officer |
SELL
Open market or private sale
|
Direct |
21,923
-2.54%
|
$21,923
$1.61 P/Share
|
|
Jun 23
2025
|
Jeffrey Alan Hawkins President & CEO |
SELL
Open market or private sale
|
Direct |
23,705
-0.9%
|
$23,705
$1.61 P/Share
|
|
Jun 23
2025
|
Christian La Pointe GC & Corp. Secretary |
SELL
Open market or private sale
|
Direct |
11,946
-1.21%
|
$11,946
$1.61 P/Share
|
|
Jun 23
2025
|
Jeffry R. Keyes Chief Financial Officer |
SELL
Open market or private sale
|
Direct |
8,624
-0.73%
|
$8,624
$1.61 P/Share
|
|
Mar 21
2025
|
Jeffrey Alan Hawkins President & CEO |
SELL
Open market or private sale
|
Direct |
23,707
-0.89%
|
$23,707
$1.39 P/Share
|
|
Mar 21
2025
|
Christian La Pointe GC & Corp. Secretary |
SELL
Open market or private sale
|
Direct |
4,896
-0.5%
|
$4,896
$1.39 P/Share
|
|
Mar 21
2025
|
Jeffry R. Keyes Chief Financial Officer |
SELL
Open market or private sale
|
Direct |
8,626
-0.72%
|
$8,626
$1.39 P/Share
|
|
Mar 21
2025
|
John S. Vieceli Chief Product Officer |
SELL
Open market or private sale
|
Direct |
4,317
-0.5%
|
$4,317
$1.39 P/Share
|
|
Mar 12
2025
|
Jeffrey Alan Hawkins President & CEO |
BUY
Grant, award, or other acquisition
|
Direct |
1,666,666
+38.43%
|
-
|
Last 12 Months Summary
Buy / Acquisition
3.75M
Shares
From
5
Insiders
| Grant, award, or other acquisition | 3.75M shares |
|---|
Sell / Disposition
3.74M
Shares
From
6
Insiders
| Open market or private sale | 3.74M shares |
|---|