• $13.7M
    Market Cap
  • -25.11%
    1-Year Change
  • Scientific & Technical Instruments
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
GEODE CAPITAL MANAGEMENT, LLC
1.17%
53,074
+53,074 (+100.00%)
Mar 31, 2026
MARINER, LLC
0.68%
30,800
+8,000 (+25.97%)
Mar 31, 2026
KEYSTONE FINANCIAL GROUP
0.32%
14,550
+14,550 (+100.00%)
Mar 31, 2026
VANGUARD FIDUCIARY TRUST CO
0.31%
14,169
+14,169 (+100.00%)
Mar 31, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
0.24%
10,823
+10,823 (+100.00%)
Sep 30, 2022
TWO SIGMA SECURITIES, LLC
0.24%
10,720
+10,720 (+100.00%)
Sep 30, 2022
N/A
0.20%
9,281
+9,281 (+100.00%)
Mar 31, 2026

Current Ownership Distribution

  • Insiders19.6M (96.09%)
  • Mutual Funds538,368 (2.63%)
  • Institutions261,222 (1.28%)
  • Other0 (0.00%)

Insider Transactions

  • 96.09% (19.6M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 3
    Number of InsiderSelling (last 12 months)
  • $35.0M
    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