• $10.6M
    Market Cap
  • -59.55%
    1-Year Change
  • Scientific & Technical Instruments
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
GEODE CAPITAL MANAGEMENT, LLC
0.60%
44,086
-8,988 (-20.39%)
Jun 30, 2026
HRT FINANCIAL LP
0.43%
32,008
+32,008 (+100.00%)
Jun 30, 2026
KEYSTONE FINANCIAL GROUP
0.35%
25,550
+11,000 (+43.05%)
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
0.22%
16,024
+6,743 (+42.08%)
Jun 30, 2026
MARINER, LLC
0.21%
15,800
-15,000 (-94.94%)
Jun 30, 2026
VANGUARD FIDUCIARY TRUST CO
0.19%
14,169
0 (0.00%)
Jun 30, 2026
JANE STREET GROUP, LLC
0.16%
11,504
+11,504 (+100.00%)
Jun 30, 2026

Current Ownership Distribution

  • Insiders19.6M (94.72%)
  • Mutual Funds651,368 (3.14%)
  • Institutions443,736 (2.14%)
  • Other0 (0.00%)

Insider Transactions

  • 94.72% (19.6M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 1
    Number of InsiderSelling (last 12 months)
  • $20.6M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Taiwan Carbon Nano Technology Corp
Sell
Jan 28, 2026
$99,806.20
46,000
$2.17
989,925
Taiwan Carbon Nano Technology Corp
Sell
Jan 09, 2026
$801.66
431
$1.86
1.0M
Taiwan Carbon Nano Technology Corp
Sell
Jan 08, 2026
$1,534.08
850
$1.80
1.0M
WEI PAO-SHENG
Award
Nov 25, 2025
$0.00
50,000
$0.00
0
tsai chun-hsien
CEO, PRESIDENT, CHAIRMAN
Award
Nov 25, 2025
$0.00
80,000
$0.00
0
Lee Hsin-Liang Christopher
CFO
Award
Nov 25, 2025
$0.00
20,000
$0.00
0
chiang yao-chung
Award
Nov 25, 2025
$0.00
50,000
$0.00
0
WEI PAO-SHENG
Conversion
Nov 25, 2025
$0.00
50,000
$0.00
0
tsai chung-jung
Award
Nov 25, 2025
$0.00
80,000
$0.00
0
chang wen-han
Award
Nov 25, 2025
$0.00
50,000
$0.00
0
chiang yao-chung
Conversion
Nov 25, 2025
$0.00
50,000
$0.00
0
WEI PAO-SHENG
Award
Nov 25, 2025
$105,000.00
50,000
$2.10
90,880
tsai chung-yi
Award
Nov 25, 2025
$0.00
50,000
$0.00
0
lee ting-chuan
Award
Nov 25, 2025
$0.00
80,000
$0.00
0
chiang yao-chung
Award
Nov 25, 2025
$105,000.00
50,000
$2.10
91,280
chang wen-han
Conversion
Nov 25, 2025
$0.00
50,000
$0.00
0
tsai chung-jung
Conversion
Nov 25, 2025
$0.00
80,000
$0.00
0
Lee Hsin-Liang Christopher
CFO
Conversion
Nov 25, 2025
$0.00
20,000
$0.00
0
tsai chun-hsien
CEO, PRESIDENT, CHAIRMAN
Conversion
Nov 25, 2025
$0.00
80,000
$0.00
0
chang wen-han
Award
Nov 25, 2025
$105,000.00
50,000
$2.10
101,546
tsai chung-jung
Award
Nov 25, 2025
$168,000.00
80,000
$2.10
356,999
lee ting-chuan
Conversion
Nov 25, 2025
$0.00
80,000
$0.00
0
tsai chung-yi
Conversion
Nov 25, 2025
$0.00
50,000
$0.00
0
Lee Hsin-Liang Christopher
CFO
Award
Nov 25, 2025
$42,000.00
20,000
$2.10
75,275
tsai chun-hsien
CEO, PRESIDENT, CHAIRMAN
Award
Nov 25, 2025
$168,000.00
80,000
$2.10
410,372
lee ting-chuan
Award
Nov 25, 2025
$168,000.00
80,000
$2.10
365,707
tsai chung-yi
Award
Nov 25, 2025
$105,000.00
50,000
$2.10
90,880
Taiwan Carbon Nano Technology Corp
Sell
Oct 06, 2025
$25,130.00
7,000
$3.59
1.0M
Taiwan Carbon Nano Technology Corp
Sell
Oct 02, 2025
$7,170.00
2,000
$3.58
1.0M
Taiwan Carbon Nano Technology Corp
Sell
Oct 01, 2025
$5,887.61
1,700
$3.46
1.0M