Vanguard Group Inc Quantum Si Inc Transaction History

Vanguard Group Inc

  • $6.44 Trillion
  • Q3 2025

A detailed history of Vanguard Group Inc transactions in Quantum Si Inc stock. As of the latest transaction made, Vanguard Group Inc holds 8,714,507 shares of QSI stock, worth $12.4 Million. This represents 0.0% of its overall portfolio holdings.

Number of Shares
8,714,507
Previous 8,669,661 0.52%
Holding current value
$12.4 Million
Previous $17 Million 27.69%
% of portfolio
0.0%
Previous 0.0%

Shares

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

Nov 07, 2025
BUY
$1.0 - $2.14 $44,846 - $95,970
44,846 Added 0.52%
8,714,507 $12.3 Million
Q2 2025

Aug 11, 2025
BUY
$1.08 - $2.05 $1.92 Million - $3.64 Million
1,776,799 Added 25.78%
8,669,661 $17 Million
Q1 2025

May 09, 2025
BUY
$1.14 - $4.29 $1.6 Million - $6.01 Million
1,401,109 Added 25.51%
6,892,862 $8.27 Million
Q4 2024

Feb 11, 2025
BUY
$0.63 - $3.6 $286,331 - $1.64 Million
454,495 Added 9.02%
5,491,753 $14.8 Million
Q3 2024

Nov 13, 2024
BUY
$0.82 - $1.22 $72,894 - $108,453
88,896 Added 1.8%
5,037,258 $4.43 Million
Q2 2024

Aug 13, 2024
SELL
$0.84 - $1.89 $295,951 - $665,890
-352,323 Reduced 6.65%
4,948,362 $5.2 Million
Q1 2024

May 10, 2024
BUY
$1.43 - $2.23 $117,922 - $183,892
82,463 Added 1.58%
5,300,685 $10.4 Million
Q4 2023

Feb 14, 2024
BUY
$1.15 - $2.27 $60,979 - $120,369
53,026 Added 1.03%
5,218,222 $10.5 Million
Q3 2023

Nov 14, 2023
BUY
$1.6 - $3.89 $16,307 - $39,646
10,192 Added 0.2%
5,165,196 $8.57 Million
Q2 2023

Aug 14, 2023
BUY
$1.38 - $1.83 $43,395 - $57,546
31,446 Added 0.61%
5,155,004 $9.23 Million
Q1 2023

May 15, 2023
BUY
$1.59 - $2.58 $280,444 - $455,060
176,380 Added 3.57%
5,123,558 $9.02 Million
Q4 2022

Feb 10, 2023
BUY
$1.82 - $3.27 $47,785 - $85,857
26,256 Added 0.53%
4,947,178 $9.05 Million
Q3 2022

Nov 14, 2022
BUY
$0.74 - $4.35 $228,173 - $1.34 Million
308,343 Added 6.68%
4,920,922 $13.5 Million
Q2 2022

Aug 12, 2022
BUY
$2.32 - $4.9 $1.57 Million - $3.33 Million
678,572 Added 17.25%
4,612,579 $10.7 Million
Q1 2022

May 13, 2022
BUY
$3.86 - $8.22 $8.24 Million - $17.5 Million
2,134,692 Added 118.64%
3,934,007 $18.4 Million
Q4 2021

Feb 14, 2022
BUY
$5.65 - $8.75 $1.5 Million - $2.32 Million
265,712 Added 17.33%
1,799,315 $14.2 Million
Q3 2021

Nov 12, 2021
BUY
$7.97 - $13.56 $12.2 Million - $20.8 Million
1,533,603 New
1,533,603 $12.8 Million

Others Institutions Holding QSI

# of Institutions
144
Shares Held
60.8M
Call Options Held
1.69M
Put Options Held
931K
View Full List

About Quantum-Si Inc

QSI Quotes by TradingView
  • 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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