QSI
Quantum-Si-A (QSI)
NASDAQ
$1.50+$0.07 (+4.55%)
Price as of Oct 02, 2026 6:03 PM EDT
  • $284.5M
    Market Cap
  • -7.14%
    1-Year Change
  • Medical Devices
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
4.86%
9.6M
+892,515 (+9.29%)
Dec 31, 2025
BLACKROCK FUNDING, INC. /DE
4.27%
8.4M
+1.5M (+18.22%)
Dec 31, 2024
VANGUARD CAPITAL MANAGEMENT LLC
3.83%
7.6M
+556,301 (+7.34%)
Jun 30, 2026
ARK INVESTMENT MANAGEMENT LLC
3.62%
7.2M
+288,839 (+4.03%)
Jun 30, 2026
BLACKROCK INC.
3.54%
7.0M
-231,111 (-3.30%)
Jun 30, 2024
BLACKROCK, INC.
2.64%
5.2M
-8.2M (-156.73%)
Jun 30, 2026
SUMITOMO MITSUI TRUST HOLDINGS, INC.
2.22%
4.4M
-299,054 (-6.81%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions1.0B (71.14%)
  • Mutual Funds369.8M (25.45%)
  • Insiders49.6M (3.42%)
  • Other0 (0.00%)

Insider Transactions

  • 3.42% (49.6M)
    Current InsiderOwnership (%, shares)
  • 2
    Number of InsiderBuying (last 12 months)
  • $477,793.76
    Amount of InsiderBuying (last 12 months)
  • 4
    Number of InsiderSelling (last 12 months)
  • $26.6M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
LaPointe Christian
GC & Corp. Secretary
Sell
Sep 22, 2026
$3,591.74
4,721
$0.76
1.2M
Hawkins Jeffrey Alan
President & CEO
Sell
Sep 22, 2026
$7,386.61
9,709
$0.76
3.6M
LaPointe Christian
GC & Corp. Secretary
Sell
Sep 21, 2026
$7,403.06
9,795
$0.76
1.2M
Hawkins Jeffrey Alan
President & CEO
Sell
Sep 21, 2026
$15,224.08
20,143
$0.76
3.6M
LaPointe Christian
GC & Corp. Secretary
Sell
Jun 23, 2026
$7,006.81
7,794
$0.90
1.2M
LaPointe Christian
GC & Corp. Secretary
Sell
Jun 22, 2026
$7,461.98
7,794
$0.96
1.2M
Vieceli John S.
Chief Product Officer
Sell
Mar 23, 2026
$9,290.16
11,239
$0.83
1.2M
Keyes Jeffry R.
Chief Financial Officer
Sell
Mar 23, 2026
$3,655.23
4,422
$0.83
1.8M
Hawkins Jeffrey Alan
President & CEO
Sell
Mar 23, 2026
$10,042.36
12,149
$0.83
3.9M
LaPointe Christian
GC & Corp. Secretary
Sell
Mar 23, 2026
$5,050.53
6,110
$0.83
1.2M
Vieceli John S.
Chief Product Officer
Sell
Mar 20, 2026
$9,126.01
10,758
$0.85
1.2M
Keyes Jeffry R.
Chief Financial Officer
Sell
Mar 20, 2026
$3,590.85
4,233
$0.85
1.8M
Hawkins Jeffrey Alan
President & CEO
Sell
Mar 20, 2026
$9,864.03
11,628
$0.85
3.9M
LaPointe Christian
GC & Corp. Secretary
Sell
Mar 20, 2026
$4,961.71
5,849
$0.85
1.2M
LaPointe Christian
GC & Corp. Secretary
Award
Mar 12, 2026
$0.00
312,339
$0.00
312,339
Vieceli John S.
Chief Product Officer
Award
Mar 12, 2026
$0.00
468,508
$0.00
468,508
Hawkins Jeffrey Alan
President & CEO
Award
Mar 12, 2026
$0.00
1.6M
$0.00
1.6M
Vieceli John S.
Chief Product Officer
Award
Mar 12, 2026
$0.00
391,681
$0.00
1.2M
LaPointe Christian
GC & Corp. Secretary
Award
Mar 12, 2026
$0.00
261,121
$0.00
1.2M
Hawkins Jeffrey Alan
President & CEO
Award
Mar 12, 2026
$0.00
1.3M
$0.00
3.9M
Keyes Jeffry R.
Chief Financial Officer
Award
Mar 12, 2026
$0.00
780,847
$0.00
780,847
Keyes Jeffry R.
Chief Financial Officer
Award
Mar 12, 2026
$0.00
652,803
$0.00
1.8M
Kummeth Charles R.
Buy
Mar 05, 2026
$459,800.00
500,000
$0.92
855,000
Dowdy Paula
Buy
Mar 05, 2026
$104,450.45
109,890
$0.95
269,107
Jafri Amir
Award
Feb 24, 2026
$0.00
114,055
$0.00
114,055
LaPointe Christian
GC & Corp. Secretary
Sell
Dec 22, 2025
$15,249.48
11,951
$1.28
948,855
Vieceli John S.
Chief Product Officer
Sell
Dec 22, 2025
$27,978.85
21,927
$1.28
800,973
Keyes Jeffry R.
Chief Financial Officer
Sell
Dec 22, 2025
$11,008.05
8,627
$1.28
1.2M
Hawkins Jeffrey Alan
President & CEO
Sell
Sep 23, 2025
$17,401.31
10,643
$1.64
2.6M
LaPointe Christian
GC & Corp. Secretary
Sell
Sep 23, 2025
$8,770.14
5,364
$1.64
960,806