A detailed history of Mariner, LLC transactions in Quantum Si Inc stock. As of the latest transaction made, Mariner, LLC holds 50,529 shares of QSI stock, worth $71,751. This represents 0.0% of its overall portfolio holdings.

Number of Shares
50,529
Previous 50,594 0.13%
Holding current value
$71,751
Previous $99,000 28.28%
% of portfolio
0.0%
Previous 0.0%

Shares

6 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 14, 2025

SELL
$1.0 - $2.14 $65 - $139
-65 Reduced 0.13%
50,529 $71,000
Q2 2025

Aug 14, 2025

BUY
$1.08 - $2.05 $2,796 - $5,307
2,589 Added 5.39%
50,594 $99,000
Q1 2025

May 15, 2025

BUY
$1.14 - $4.29 $16,605 - $62,488
14,566 Added 43.56%
48,005 $57,000
Q4 2024

Feb 13, 2025

BUY
$0.63 - $3.6 $4,750 - $27,144
7,540 Added 29.11%
33,439 $90,000
Q3 2024

Nov 13, 2024

BUY
$0.82 - $1.22 $21,237 - $31,596
25,899 New
25,899 $22,000
Q3 2023

Nov 13, 2023

BUY
$1.6 - $3.89 $18,020 - $43,813
11,263 New
11,263 $18,000

Others Institutions Holding QSI

About Quantum-Si Inc


  • Ticker QSI
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Biotechnology
  • Shares Outstandng 119,433,000
  • Market Cap $170M
  • Description
  • 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 Guil...
More about QSI
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