CDIO
CARDIO DGNS HLD (CDIO)
NASDAQ
$2.04+$0.005 (+0.25%)
Price as of Sep 11, 2026 7:30 PM EDT
  • $6.0M
    Market Cap
  • -46.44%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK INC.
36.06%
1.1M
0 (0.00%)
Jun 30, 2024
LINDEN ADVISORS LP
2.90%
85,713
+85,713 (+100.00%)
Dec 31, 2022
RENAISSANCE TECHNOLOGIES LLC
1.66%
49,200
+33,852 (+68.80%)
Jun 30, 2026
BLACKROCK, INC.
1.17%
34,708
0 (0.00%)
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
0.89%
26,233
-5,944 (-22.66%)
Jun 30, 2026
POLAR ASSET MANAGEMENT PARTNERS INC.
0.87%
25,698
+25,698 (+100.00%)
Dec 31, 2022
SUSQUEHANNA INTERNATIONAL GROUP, LLP
0.80%
23,646
+23,646 (+100.00%)
Dec 31, 2022

Current Ownership Distribution

  • Mutual Funds6.3M (40.77%)
  • Insiders4.8M (31.15%)
  • Institutions4.3M (28.08%)
  • Other0 (0.00%)

Insider Transactions

  • 31.15% (4.8M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 0
    Number of InsiderSelling (last 12 months)
  • $0.00
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Betts Wendy J
Award
Jun 30, 2026
$6,250.26
2,854
$2.19
12,367
Betts Wendy J
Award
Mar 31, 2026
$6,249.75
3,205
$1.95
9,513
Intrater James
Award
Mar 31, 2026
$6,249.75
3,205
$1.95
10,464
Burton Paul Frederick
Award
Mar 31, 2026
$6,249.75
3,205
$1.95
10,464
Fung Peter K
Award
Dec 31, 2025
$6,249.26
2,306
$2.71
6,308
Betts Wendy J
Award
Dec 31, 2025
$6,249.26
2,306
$2.71
6,308
Intrater James
Award
Dec 31, 2025
$6,249.26
2,306
$2.71
7,259
Fung Peter K
Award
Sep 30, 2025
$6,251.59
1,559
$4.01
4,002
Intrater James
Award
Sep 30, 2025
$6,251.59
1,559
$4.01
4,953
Burton Paul Frederick
Award
Sep 30, 2025
$6,251.59
1,559
$4.01
4,953
Betts Wendy J
Award
Sep 30, 2025
$6,251.59
1,559
$4.01
4,002
Fung Peter K
Award
Jun 30, 2025
$6,249.60
1,736
$3.60
2,443
Burton Paul Frederick
Award
Jun 30, 2025
$6,249.60
1,736
$3.60
3,394
Betts Wendy J
Award
Jun 30, 2025
$6,249.60
1,736
$3.60
2,443
Intrater James
Award
Jun 30, 2025
$6,249.60
1,736
$3.60
3,394
Fung Peter K
Award
Mar 31, 2025
$6,249.87
18,939
$0.33
21,211
Intrater James
Award
Mar 31, 2025
$6,249.87
18,939
$0.33
49,744
Betts Wendy J
Award
Mar 31, 2025
$6,249.87
18,939
$0.33
21,211
Burton Paul Frederick
Award
Mar 31, 2025
$6,249.87
18,939
$0.33
49,744