GCT Semiconductor Holding, Inc. (GCTS)
NYSE · Semiconductors & Related Devices · Manufacturing · CIK 1851961 · fiscal year ends in Dec
Closing price $1.11 on 30 Oct 2026; 52-week range $0.99 to $3.73.
Key figures
The last twelve months reported, with the latest price and balance sheet.
- Revenue, last twelve months
- $4.1M
- Revenue growth
- -32.8%
- Net income, last twelve months
- -$53.1M
- Earnings per share
- -$0.81
- Gross margin
- -38.3%
- Operating margin
- -852.0%
- Net margin
- -1302.0%
- Free cash flow
- -$40.7M
- Market value
- $102.5M
- Cash
- $30.2M
- Debt
- $55.1M
- Shares outstanding
- 92.0M
Financial statements
Revenue, profit and cash flow by fiscal year, each year linked to its annual report.
| Fiscal year | Year end | Revenue | Operating income | Net income | EPS | Free cash flow | Filing |
|---|---|---|---|---|---|---|---|
| FY2025 | 31 Dec 2025 | $2.9M | -$36.5M | -$43.4M | -$0.82 | -$33.1M | 10-K filed 25 Mar 2026 |
| FY2024 | 31 Dec 2024 | $9.1M | -$13.1M | -$12.4M | -$0.30 | -$31.5M | 10-K filed 25 Mar 2025 |
| FY2023 | 31 Dec 2023 | $16.0M | -$14.6M | -$22.5M | -$0.94 | -$9.2M | 10-K filed 25 Mar 2025 |
By quarter
| Quarter | Quarter end | Revenue | Net income | EPS |
|---|---|---|---|---|
| Q2 FY2026 | 30 Jun 2026 | $971.0K | -$20.4M | -$0.25 |
| Q1 FY2026 | 31 Mar 2026 | $1.9M | -$9.9M | -$0.15 |
| Q4 FY2025 | 31 Dec 2025 | $758.0K | -$9.0M | -$0.16 |
| Q3 FY2025 | 30 Sep 2025 | $430.0K | -$13.8M | -$0.25 |
| Q2 FY2025 | 30 Jun 2025 | $1.2M | -$13.5M | -$0.26 |
| Q1 FY2025 | 31 Mar 2025 | $496.0K | -$7.0M | -$0.15 |
| Q4 FY2024 | 31 Dec 2024 | $1.8M | -$5.0M | -$0.15 |
| Q3 FY2024 | 30 Sep 2024 | $2.6M | -$7.1M | -$0.16 |
Revenue by segment
As the company reports it in the segment note of its annual report.
By product, FY2025
| Segment | Revenue | Share |
|---|---|---|
| Service | $1.7M | 60.5% |
| Product | $1.1M | 39.5% |
By region, FY2025
| Segment | Revenue | Share |
|---|---|---|
| United States | $1.6M | 55.9% |
| Taiwan | $629.0K | 21.9% |
| China | $411.0K | 14.3% |
| Germany | $142.0K | 5.0% |
| South Korea | $82.0K | 2.9% |
Company events
The newest 8-K filings of 42 held.
| Filed | Form | Event | Items |
|---|---|---|---|
| 18 Sep 2026 | 8-K | Shareholder vote | 5.07 |
| 15 Sep 2026 | 8-K | Leadership change | 5.02 |
| 10 Aug 2026 | 8-K | Results | 2.02, 9.01 |
| 18 Jun 2026 | 8-K/A | Other events | 8.01, 9.01 |
| 18 Jun 2026 | 8-K | Results | 2.02, 9.01 |
| 12 May 2026 | 8-K | Results | 2.02, 9.01 |
| 25 Mar 2026 | 8-K | Results | 2.02, 9.01 |
| 25 Feb 2026 | 8-K | Material agreement | 1.01, 9.01 |
| 29 Jan 2026 | 8-K | Other events | 8.01, 9.01 |
| 15 Dec 2025 | 8-K | Material agreement, New debt | 1.01, 2.03, 9.01 |
| 12 Nov 2025 | 8-K | Results | 2.02, 9.01 |
| 19 Sep 2025 | 8-K | Shareholder vote | 5.07 |
Every filing
The newest filings with the SEC of 148 held.
| Filed | Form | Period |
|---|---|---|
| 18 Sep 2026 | 8-K | 17 Sep 2026 |
| 15 Sep 2026 | 8-K | 10 Sep 2026 |
| 10 Aug 2026 | 8-K | 10 Aug 2026 |
| 10 Aug 2026 | 10-Q | 30 Jun 2026 |
| 3 Aug 2026 | ARS | 28 Jul 2026 |
| 3 Aug 2026 | DEFA14A | – |
| 3 Aug 2026 | DEF 14A | 17 Sep 2026 |
| 18 Jun 2026 | 8-K/A | 18 Jun 2026 |
| 18 Jun 2026 | 8-K | 18 Jun 2026 |
| 12 May 2026 | 10-Q | 31 Mar 2026 |
| 12 May 2026 | 8-K | 12 May 2026 |
| 25 Mar 2026 | 10-K | 31 Dec 2025 |
Insider trades
Form 4 trades by officers, directors and 10% owners, last 12 months.
| Traded | Insider | Type | Shares | Price | Value | Held after | Form 4 |
|---|---|---|---|---|---|---|---|
| 25 Nov 2025 | Shin Hyunsoo, Director | Purchase | 16,725 | $1.28 | $21.4K | 757,771 | 28 Nov 2025 |
| 21 Nov 2025 | Shin Hyunsoo, Director | Purchase | 3,180 | $1.28 | $4.1K | 741,046 | 24 Nov 2025 |
| 20 Nov 2025 | Shin Hyunsoo, Director | Purchase | 25,453 | $1.28 | $32.6K | 737,866 | 24 Nov 2025 |
Large holders
Schedule 13D and 13G filings by holders of more than 5% of the voting shares.
| Filed | Holder | Schedule | Stake | Shares |
|---|---|---|---|---|
| 15 May 2026 | TD SECURITIES (USA) LLC | 13G amended | 4.6% | 3.5M |
| 13 Feb 2026 | TD SECURITIES (USA) LLC | 13G amended | 6.1% | 3.7M |
Short interest
Shares sold short and not yet bought back, on each FINRA settlement date.
| Settlement | Shares short | Change | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 11.9M | +9.89% | 7.32 |
| 30 Sep 2026 | 10.8M | -1.87% | 6.74 |
| 15 Sep 2026 | 11.0M | +6.27% | 8.05 |
| 31 Aug 2026 | 10.4M | 0% | 5.64 |
| 14 Aug 2026 | 10.4M | +30.12% | 3.19 |
| 31 Jul 2026 | 8.0M | +6% | 4.74 |
| 15 Jul 2026 | 7.5M | +6.37% | 3.84 |
| 30 Jun 2026 | 7.1M | -6.58% | 1.83 |
Funds that hold it
From each fund's latest Form 13F.
61 funds held it at 30 Jun 2026: 47 added and 2 trimmed in the quarter. The largest:
| Fund | Shares | Value | Change in the quarter |
|---|---|---|---|
| Vanguard Capital Management LLC | 2,999,130 | $8.9M | +1,254,181 |
| Renaissance Technologies LLC | 1,695,300 | $5.0M | +1,695,300 |
| Marshall Wace, LLP | 1,296,433 | $3.9M | +1,296,433 |
| BlackRock, Inc. | 1,281,164 | $3.8M | +683,217 |
| Tudor Investment Corp. Et Al | 818,485 | $2.4M | +818,485 |
| Geode Capital Management, LLC | 767,459 | $2.3M | +293,113 |
| UBS Group AG | 646,238 | $1.9M | +608,875 |
| Vanguard Fiduciary Trust Co. | 416,917 | $1.2M | +170,673 |
| State Street Corp. | 353,089 | $1.0M | +112,500 |
| Informed Momentum Co LLC | 241,246 | $716.5K | +241,246 |
Peers
Companies in the same industry.
- NVIDIA Corp. (NVDA): revenue $303.0B, market value $4.93T
- Taiwan Semiconductor Manufacturing Company Limited (TSM): revenue $122.4B, market value $2.11T
- Broadcom Inc. (AVGO): revenue $89.1B, market value $1.56T
- Micron Technology Inc. (MU): revenue $133.2B, market value $1.00T
- Advanced Micro Devices Inc. (AMD): revenue $41.3B, market value $824.1B
- Intel Corp. (INTC): revenue $59.9B, market value $349.3B
- Applied Materials Inc. (AMAT): revenue $30.8B, market value $309.6B
- Texas Instruments Inc. (TXN): revenue $20.8B, market value $275.0B
- Arm Holdings plc (ARM): revenue $4.9B, market value $219.1B
- Analog Devices Inc. (ADI): revenue $13.9B, market value $202.1B