# GCT Semiconductor Holding, Inc.: overview GCTS · NYSE · CIK 1851961 · [Technology](/sectors/technology.md) · fiscal year ends Dec 31 Pages: [Overview](/companies/gcts.md) · [Financials](/companies/gcts/financials.md) · [Filings](/companies/gcts/filings.md) · [Insiders](/companies/gcts/insiders.md) Latest reported revenue: [$971.0k](/filings/0001193125-26-342564.md) for Q2 FY2026, three months to 2026-06-30, from the 10-Q filed Aug 10, 2026 (XBRL us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax, accession 0001193125-26-342564). ## Last eight quarters | Line item | Unit | Q3 FY2024 (2024-09-30) | Q4 FY2024 (2024-12-31) | Q1 FY2025 (2025-03-31) | Q2 FY2025 (2025-06-30) | Q3 FY2025 (2025-09-30) | Q4 FY2025 (2025-12-31) | Q1 FY2026 (2026-03-31) | Q2 FY2026 (2026-06-30) | | --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | | Revenue | $m | [2.6](/filings/0001193125-25-277777.md) | [1.8 d](/filings/0001193125-26-124183.md) | [0.5](/filings/0001193125-26-219536.md) | [1.2](/filings/0001193125-26-342564.md) | [0.4](/filings/0001193125-25-277777.md) | [0.8 d](/filings/0001193125-26-124183.md) | [1.9](/filings/0001193125-26-219536.md) | [1.0](/filings/0001193125-26-342564.md) | | Gross margin | % | [62.3%](/filings/0001193125-25-277777.md) | [32.3% d](/filings/0001193125-26-124183.md) | [17.7%](/filings/0001193125-26-219536.md) | [32.0%](/filings/0001193125-26-342564.md) | [(244.2%)](/filings/0001193125-25-277777.md) | [(162.7%) d](/filings/0001193125-26-124183.md) | [49.3%](/filings/0001193125-26-219536.md) | [(23.3%)](/filings/0001193125-26-342564.md) | | Operating margin | % | [(226.5%)](/filings/0001193125-25-277777.md) | [(412.7%) d](/filings/0001193125-26-124183.md) | [(1560.5%)](/filings/0001193125-26-219536.md) | [(642.3%)](/filings/0001193125-26-342564.md) | [(2152.1%)](/filings/0001193125-25-277777.md) | [(1577.0%) d](/filings/0001193125-26-124183.md) | [(319.4%)](/filings/0001193125-26-219536.md) | [(763.6%)](/filings/0001193125-26-342564.md) | | Net margin | % | [(272.8%)](/filings/0001193125-25-277777.md) | [(278.5%) d](/filings/0001193125-26-124183.md) | [(1404.8%)](/filings/0001193125-26-342564.md) | [(1145.3%)](/filings/0001193125-26-342564.md) | [(3220.7%)](/filings/0001193125-25-277777.md) | [(1189.6%) d](/filings/0001193125-26-124183.md) | [(513.8%)](/filings/0001193125-26-342564.md) | [(2098.7%)](/filings/0001193125-26-342564.md) | | Diluted EPS | $ per share | [(0.16)](/filings/0001193125-25-277777.md) | not reported | [(0.15)](/filings/0001193125-26-219536.md) | [(0.26)](/filings/0001193125-26-342564.md) | [(0.25)](/filings/0001193125-25-277777.md) | not reported | [(0.15)](/filings/0001193125-26-219536.md) | [(0.25)](/filings/0001193125-26-342564.md) | | Free cash flow | $m | [(4.7) d](/filings/0001193125-25-277777.md) | [(2.6) d](/filings/0001193125-26-124183.md) | [(8.1)](/filings/0001193125-26-219536.md) | [(8.7) d](/filings/0001193125-26-342564.md) | [(7.8) d](/filings/0001193125-25-277777.md) | [(8.5) d](/filings/0001193125-26-124183.md) | [(7.5)](/filings/0001193125-26-219536.md) | [(16.9) d](/filings/0001193125-26-342564.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Derived values: 9-month figure less the 6-month figure; 12-month figure less the 9-month figure; 6-month figure less the 3-month figure. ## Last five fiscal years | Line item | Unit | FY2022 (2022-12-31) | FY2023 (2023-12-31) | FY2024 (2024-12-31) | FY2025 (2025-12-31) | | --- | --- | ---: | ---: | ---: | ---: | | Revenue | $m | not reported | [16.0](/filings/0000950170-25-044438.md) | [9.1](/filings/0001193125-26-124183.md) | [2.9](/filings/0001193125-26-124183.md) | | Gross margin | % | not reported | [42.0%](/filings/0000950170-25-044438.md) | [55.6%](/filings/0001193125-26-124183.md) | [(63.4%)](/filings/0001193125-26-124183.md) | | Operating margin | % | not reported | [(90.8%)](/filings/0000950170-25-044438.md) | [(143.8%)](/filings/0001193125-26-124183.md) | [(1274.9%)](/filings/0001193125-26-124183.md) | | Net margin | % | not reported | [(140.2%)](/filings/0000950170-25-044438.md) | [(135.6%)](/filings/0001193125-26-124183.md) | [(1513.3%)](/filings/0001193125-26-124183.md) | | Diluted EPS | $ per share | not reported | [(0.94)](/filings/0000950170-25-044438.md) | [(0.30)](/filings/0001193125-26-124183.md) | [(0.82)](/filings/0001193125-26-124183.md) | | Free cash flow | $m | not reported | [(9.2)](/filings/0000950170-25-044438.md) | [(31.5)](/filings/0001193125-26-124183.md) | [(33.1)](/filings/0001193125-26-124183.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing. ## Insider purchases and sales The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/gcts/insiders.md) None in coverage. ## Funds that report holding it From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md) | Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before | | --- | --- | ---: | ---: | --- | --- | | [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $8.9m | 2,999,130 | | Added +1,254,181 | | [RENAISSANCE TECHNOLOGIES LLC](/funds/1037389.md) | 2026-06-30 | $5.0m | 1,695,300 | | New +1,695,300 | | [MARSHALL WACE, LLP](/funds/1318757.md) | 2026-06-30 | $3.9m | 1,296,433 | | New +1,296,433 | | [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $3.8m | 1,281,164 | | Added +683,217 | | [TUDOR INVESTMENT CORP ET AL](/funds/923093.md) | 2026-06-30 | $2.4m | 818,485 | | New +818,485 | | [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $2.3m | 767,459 | | Added +293,113 | | [UBS Group AG](/funds/1610520.md) | 2026-06-30 | $1.9m | 646,238 | | Added +608,875 | | [VANGUARD FIDUCIARY TRUST CO](/funds/933478.md) | 2026-06-30 | $1.2m | 416,917 | | Added +170,673 | | [STATE STREET CORP](/funds/93751.md) | 2026-06-30 | $1.0m | 353,089 | | Added +112,500 | | [Informed Momentum Co LLC](/funds/1510989.md) | 2026-06-30 | $716.5k | 241,246 | | New +241,246 | ## Recent filings [All 336 filings](/companies/gcts/filings.md) | Filed | Accepted | Form | What it is | Accession | | --- | --- | --- | --- | --- | | 2026-09-18 | 20:07 ET | [8-K](/filings/0000929638-26-003573.md) | 5.07 Shareholder vote results | 0000929638-26-003573 | | 2026-09-15 | 20:24 ET | [8-K](/filings/0000929638-26-003539.md) | 5.02 Departure or appointment of officers or directors | 0000929638-26-003539 | | 2026-08-10 | 21:05 ET | [8-K](/filings/0000929638-26-002965.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000929638-26-002965 | | 2026-08-10 | 20:46 ET | [10-Q](/filings/0001193125-26-342564.md) | Quarterly report, period 2026-06-30 | 0001193125-26-342564 | | 2026-08-03 | 20:11 ET | [DEF 14A](/filings/0001193125-26-330575.md) | Proxy statement, period 2026-09-17 | 0001193125-26-330575 | | 2026-06-18 | 21:21 ET | [8-K/A](/filings/0000929638-26-002285.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000929638-26-002285 | | 2026-06-18 | 20:31 ET | [8-K](/filings/0000929638-26-002281.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000929638-26-002281 | | 2026-05-12 | 20:22 ET | [10-Q](/filings/0001193125-26-219536.md) | Quarterly report, period 2026-03-31 | 0001193125-26-219536 | | 2026-05-12 | 20:15 ET | [8-K](/filings/0000929638-26-001816.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000929638-26-001816 | | 2026-03-25 | 20:27 ET | [10-K](/filings/0001193125-26-124183.md) | Annual report, period 2025-12-31 | 0001193125-26-124183 | ## Latest annual report [Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001193125-26-124183.md), filed Mar 25, 2026. ## Forecast league Q3 FY2026, the quarter ended 2026-09-30, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by \[object Promise\]. [Forecast this quarter](/leagues/2026q3/targets/40d43102-1772-4c83-8f45-416970420feb) ## About the filer - CIK: 1851961 - Tickers: GCTS, GCTS-WT - Exchange: NYSE - SIC code: 3674 Semiconductors & Related Devices - State of incorporation: DE - Filer category:
Emerging growth company Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:49 ET. No prices; not investment advice.