GCTS
GCT SEMICOND (GCTS)
NYSE
$1.40-$0.12 (-8.22%)
Price as of Oct 22, 2026 6:46 PM EDT
  • $139.8M
    Market Cap
  • 4.83%
    1-Year Change
  • Semiconductors
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD CAPITAL MANAGEMENT LLC
3.30%
3.0M
+1.3M (+41.82%)
Jun 30, 2026
VANGUARD GROUP INC
2.21%
2.0M
+422,378 (+21.05%)
Dec 31, 2025
RENAISSANCE TECHNOLOGIES LLC
1.86%
1.7M
+1.7M (+100.00%)
Jun 30, 2026
MARSHALL WACE, LLP
1.43%
1.3M
+1.3M (+100.00%)
Jun 30, 2026
BLACKROCK, INC.
1.41%
1.3M
+683,217 (+53.33%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
0.96%
876,433
+4,844 (+0.55%)
Dec 31, 2024
TUDOR INVESTMENT CORP ET AL
0.90%
818,485
+818,485 (+100.00%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions37.2M (40.89%)
  • Other23.7M (26.03%)
  • Mutual Funds17.3M (19.05%)
  • Insiders12.8M (14.04%)

Insider Transactions

  • 14.04% (12.8M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $2.8M
    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
Shin Hyunsoo
Award
Sep 30, 2026
$0.00
12,971
$0.00
827,039
Barker Robert
Award
Sep 30, 2026
$0.00
12,971
$0.00
164,681
Chun Kukjin
Award
Sep 30, 2026
$0.00
12,971
$0.00
111,607
TUDER JEFFREY
Award
Sep 30, 2026
$0.00
12,971
$0.00
164,161
Lee Kyeongho
Award
Sep 30, 2026
$0.00
12,971
$0.00
1.1M
Kim Jeemee
Chief Technology Officer
Award
Sep 10, 2026
$0.00
100,000
$0.00
402,701
Schlaefer John
President, CEO & Class III Dir
Award
Sep 10, 2026
$0.00
150,000
$0.00
352,728
Cheng Edmond
Chief Financial Officer
Award
Sep 10, 2026
$0.00
145,000
$0.00
296,000
Sum Alex
Sr. VP of Sales and Marketing
Award
Sep 10, 2026
$0.00
75,000
$0.00
258,743
Barker Robert
Award
Jun 30, 2026
$0.00
9,259
$0.00
151,710
Lee Kyeongho
Award
Jun 30, 2026
$0.00
9,259
$0.00
1.1M
Chun Kukjin
Award
Jun 30, 2026
$0.00
9,259
$0.00
98,636
Shin Hyunsoo
Award
Jun 30, 2026
$0.00
9,259
$0.00
814,068
Chun Kukjin
Award
Mar 31, 2026
$0.00
24,122
$0.00
89,377
Barker Robert
Award
Mar 31, 2026
$0.00
24,122
$0.00
142,451
Lee Kyeongho
Award
Mar 31, 2026
$0.00
24,122
$0.00
1.1M
TUDER JEFFREY
Award
Mar 31, 2026
$0.00
24,122
$0.00
141,931
Chun Kukjin
Gift
Feb 23, 2026
$0.00
40,000
$0.00
65,255
Chun Kukjin
Award
Dec 31, 2025
$0.00
22,916
$0.00
105,255
Shin Hyunsoo
Award
Dec 31, 2025
$0.00
22,916
$0.00
780,687
CHAN NELSON C
Award
Dec 31, 2025
$0.00
22,916
$0.00
101,520
Barker Robert
Award
Dec 31, 2025
$0.00
22,916
$0.00
118,329
TUDER JEFFREY
Award
Dec 31, 2025
$0.00
22,916
$0.00
117,809
Lee Kyeongho
Award
Dec 31, 2025
$0.00
22,916
$0.00
1.1M
Shin Hyunsoo
Buy
Nov 25, 2025
$21,408.00
16,725
$1.28
757,771
Shin Hyunsoo
Buy
Nov 21, 2025
$4,070.40
3,180
$1.28
741,046
Shin Hyunsoo
Buy
Nov 20, 2025
$32,579.84
25,453
$1.28
737,866
Shin Hyunsoo
Award
Sep 30, 2025
$0.00
18,092
$0.00
712,413
Lee Kyeongho
Award
Sep 30, 2025
$0.00
18,092
$0.00
1.0M
Barker Robert
Award
Sep 30, 2025
$0.00
18,092
$0.00
95,413