A detailed history of Vanguard Personalized Indexing Management, LLC transactions in Quantum Si Inc stock. As of the latest transaction made, Vanguard Personalized Indexing Management, LLC holds 25,193 shares of QSI stock, worth $35,774. This represents 0.0% of its overall portfolio holdings.

Number of Shares
25,193
Previous 24,091 4.57%
Holding current value
$35,774
Previous $47,000 25.53%
% of portfolio
0.0%
Previous 0.0%

Shares

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

Oct 31, 2025

BUY
$1.0 - $2.14 $1,102 - $2,358
1,102 Added 4.57%
25,193 $35,000
Q2 2025

Jul 25, 2025

BUY
$1.08 - $2.05 $663 - $1,258
614 Added 2.62%
24,091 $47,000
Q1 2025

May 13, 2025

BUY
$1.14 - $4.29 $4,026 - $15,152
3,532 Added 17.71%
23,477 $28,000
Q4 2024

Feb 10, 2025

BUY
$0.63 - $3.6 $2,275 - $13,003
3,612 Added 22.11%
19,945 $53,000
Q3 2024

Nov 12, 2024

BUY
$0.82 - $1.22 $13,393 - $19,926
16,333 New
16,333 $14,000

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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