GCTS
GCT Semiconductor Holding IncNYSE
Technology • Semiconductors
Factor tilt: Micro-Cap Growth
$1.16+11.54%
Close Nov 6, 2026
- Market cap
- $95.76M
- 1 month
- -44.8%
- 3 months
- -52.7%
- 1 year
- -12.8%
- 52-week range
- $0.99$3.73
- Dividend
- No dividends on record
- Short interest
- 14.6% of float11.9M shares · settled Oct 15, 2026 · +9.9% since Sep 30, 2026 · FINRA
Fundamentals · trailing 12 months to Jun 30, 2026
- Revenue
- $4.08M
- Net income
- -$53.11M
- Free cash flow
- -$40.66M
- Book value
- —
- Total debt
- $347K
- P/E
- —
- Price / sales
- 23.5×
- Price / book
- —
- FCF yield
- -42.5%
- Net margin
- -1,302.0%
EODHD (TTM) · as of Nov 6, 2026
End-of-day close from stored market data, not a live quote.
About GCT Semiconductor Holding Inc
GCT Semiconductor Holding, Inc., a fabless semiconductor company, designs, manufactures, and sells communication semiconductors for industrial, business-to-business, and consumer applications in the United States, Taiwan, China, Germany, and South Korea.
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The company offers wireless communication technologies, such as 5G/5.75G/4.5G/4G transceivers and modems; RF and modem chipsets based on fourth-generation (4G) long term evolution (LTE) technology, including 4G LTE, 4.5G LTE Advanced, and 4.75G LTE Advanced-Pro; baseband modem solutions, RF transceivers, and system-on-chip (SoC) solutions; and product design and support, warranty development, customer support, and technical support services. It also develops and sells cellular Internet of Things (IoT) chipsets for low-speed mobile networks, such as eMTC/NB-IOT/Sigfox, and other network protocols; and 5G NR chipsets and other 5G NR solutions. The company's products and solutions are used in portable wireless routers, indoor and outdoor fixed wireless routers, industrial machine-to-machine applications, smartphones, fixed wireless subscriber terminals, various communication modules and devices, and industrial products. It sells its products directly or indirectly through distributors to wireless operators, original equipment manufacturers (OEMs), and original design manufacturers (ODMs) in Taiwan, China, Korea, Japan, Europe, North America, and South America. GCT Semiconductor Holding, Inc. has strategic partnership with MaxLinear, Inc. to develop 5G fixed wireless access (FWA) gateways and converged gateways for consumer and enterprise applications. GCT Semiconductor Holding, Inc. was founded in 1998 and is headquartered in San Jose, California.
- Website
- gctsemi.com
- Headquarters
- San Jose, CA, United States
- Employees
- 126
- Listed
- Mar 27, 2024
- Fiscal year ends
- September
Company profile from EODHD, stored Oct 26, 2026.
Quarterly results
The last 8 fiscal quarters as reported (EODHD). Year over year compares the same quarter a year earlier.
| Quarter | Revenue | YoY | Gross margin | Op. income | Net income |
|---|---|---|---|---|---|
| Jun 2026filed Aug 10, 2026 | $971.0K | -17.9% | -23.3% | -$7.4M | -$20.4M |
| Mar 2026filed May 12, 2026 | $1.9M | +287.1% | 49.3% | -$6.1M | -$9.9M |
| Dec 2025filed Mar 25, 2026 | $758.0K | -57.5% | -162.7% | -$12.0M | -$9.0M |
| Sep 2025filed Nov 12, 2025 | $430.0K | -83.5% | -244.2% | -$9.3M | -$13.8M |
| Jun 2025filed Aug 12, 2025 | $1.2M | -19.5% | 32.0% | -$7.6M | -$13.5M |
| Mar 2025filed May 14, 2025 | $496.0K | -84.8% | 17.7% | -$7.7M | -$7.0M |
| Dec 2024filed Mar 25, 2025 | $1.8M | -57.4% | 32.3% | -$7.4M | -$5.0M |
| Sep 2024filed Nov 14, 2024 | $2.6M | -41.7% | 62.3% | -$5.9M | -$7.1M |
Fiscal years · last 5
| Fiscal year | Revenue | YoY | Gross margin | Op. income | Net income |
|---|---|---|---|---|---|
| Sep 2025filed Mar 25, 2026 | $2.9M | -68.6% | -63.4% | -$36.5M | -$43.4M |
| Sep 2024filed Mar 25, 2025 | $9.1M | -43.0% | 55.6% | -$13.1M | -$12.4M |
| Sep 2023filed Mar 8, 2024 | $16.0M | -3.8% | 42.0% | -$14.6M | -$22.5M |
| Sep 2022filed Feb 27, 2023 | $16.7M | -34.7% | 30.3% | -$22.8M | -$26.4M |
| Sep 2021filed Mar 18, 2022 | $25.5M | — | 32.0% | -$17.8M | -$26.8M |
Short-interest history
FINRA reports open short positions for a settlement date. The publication date is later. These are reported positions, with a separate date for each observation.
Compare the reported short exposure around the dates you bought, sold or watched GCTS. A long position benefits from price rises; a short position benefits from falls. A change in these counts does not predict either move.
Settlement Oct 15, 2026
11,899,389 shares short
+1,071,276 shares (+9.9%) vs Sep 30, 2026
14.6% of the stored float. Published Oct 26, 2026.
Settlement Sep 30, 2026
10,828,113 shares short
-206,708 shares (-1.9%) vs Sep 15, 2026
13.3% of the stored float. Published Oct 9, 2026.
Settlement Sep 15, 2026
11,034,821 shares short
+650,718 shares (+6.3%) vs Aug 31, 2026
15.2% of the stored float. Published Sep 24, 2026.
Settlement Aug 31, 2026
10,384,103 shares short
+388 shares (0%) vs Aug 14, 2026
14.3% of the stored float. Published Sep 10, 2026.
Settlement Aug 14, 2026
10,383,715 shares short
+2,403,583 shares (+30.1%) vs Jul 31, 2026
Share of float unavailable. Published Aug 25, 2026.
Settlement Jul 31, 2026
7,980,132 shares short
+451,893 shares (+6%) vs Jul 15, 2026
Share of float unavailable. Published Aug 11, 2026.
Change = this settlement’s shares short − the previous recorded settlement’s shares short; percentage change divides by that earlier count. A zero earlier count has no percentage change. Split-spanning counts are left uncompared. Float percentages use the stored settlement observation, not today’s float.
Source: stored FINRA equity short-interest records, up to six settlements from the last 240 days. FINRA data and reporting dates · How to read short interest
Dividends and stock splits
See the recorded cash amounts and dates behind GCTS’s income, and the splits that change its share count. Dates below are stored event records, not confirmation of a payment to your account.
Cash-dividend records
No qualified cash-dividend records are stored. This does not establish that the company pays no dividend.
Up to six Polygon cash-dividend events, including recorded ex-dates within the next 120 days. Amounts retain their recorded currency and decimal precision. Historical amounts are not restated to a common split basis, annualized, or converted to dollars.
For a long holding, compare the ex-date with when you held the shares and check the pay date against your broker’s cash history. Owning the stock today does not establish past entitlement. For a short holding, a dividend can create a payment obligation to the share lender.
Ex-dates and special dividend rules · Short-sale dividend obligations · Dividend data definitions
Split history
No qualified split events are stored. This does not establish that the stock has never split.
Up to six stored split dates through Nov 7, 2026. Equivalent vendor ratios are combined; conflicting ratios are left out. This history may be incomplete.
A split changes the share count and per-share price basis; it does not by itself add investment value. Put your holding’s earlier and later share counts on the same basis before comparing them. This applies to both long shares and shares owed on a short position.
How stock splits workPortfolio context
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Smart money context
Holder IQ: MEDIUM
9 smart-money holders: institutions with a high Holder IQ
Q2 2026, filed Sep 22, 2026
Insider context
Sentiment: unknown
No recent insider trades detected.
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What it means for you
Sign in to read your holdings or watchlist context. No personal position or direction is inferred.
What happened
No directional recent-activity label is available. This context label is separate from the scored insider signal read.
Why it can matter
A count of reported activity describes a sample, not purchase conviction, an insider’s intent or a future price move. Neutral is not an all-clear, and absent direction is not neutral evidence.
How we got this
The current context rule reads at most 50 nonduplicate issuer/share-class records filed in the last 90 days. It counts a bullish direction or purchase code P toward bullish, and a bearish direction or sale code S toward bearish. A side must exceed the opposite count by more than two to set its label; otherwise nonzero directional counts produce neutral. Calculation unavailable for this saved label: its counts, exact records, as-of time and rule version are not supplied here. Do not substitute the separate scored read’s different window or denominator.
Where the data comes from
Stored SEC Forms 3/4/5 insider-signal records, ordered by filing date with amendment duplicates excluded. Filing date is not transaction date. The last-trade line locates recent reported activity; it does not date or reconstruct the complete count.
Red flags: 7
Read the insider context evidence
What it means for you
Sign in to read your holdings or watchlist context. No personal position or direction is inferred.
What happened
No directional recent-activity label is available. This context label is separate from the scored insider signal read.
Why it can matter
A count of reported activity describes a sample, not purchase conviction, an insider’s intent or a future price move. Neutral is not an all-clear, and absent direction is not neutral evidence.
How we got this
The current context rule reads at most 50 nonduplicate issuer/share-class records filed in the last 90 days. It counts a bullish direction or purchase code P toward bullish, and a bearish direction or sale code S toward bearish. A side must exceed the opposite count by more than two to set its label; otherwise nonzero directional counts produce neutral. Calculation unavailable for this saved label: its counts, exact records, as-of time and rule version are not supplied here. Do not substitute the separate scored read’s different window or denominator.
Where the data comes from
Stored SEC Forms 3/4/5 insider-signal records, ordered by filing date with amendment duplicates excluded. Filing date is not transaction date. The last-trade line locates recent reported activity; it does not date or reconstruct the complete count.
Largest 13-F holders · Q2 2026
54 filers reported a long position in GCTS for Q2 2026. 13-F holdings are filed up to 45 days after the quarter ends.
The top 10 hold
83.7%
of the 12.6M shares 13-F filers reported
Moves vs Q1 2026
6 added0 trimmed
4 new
Net shares held
+93.4%
across the 6 holders with a comparable Q1 2026 book
| Rank | Holder | Value | Shares | Shares vs Q1 2026 |
|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | $8.9M · 3M shares | 3M | +71.9% |
| 2 | RENAISSANCE TECHNOLOGIES LLC | $5M · 1.7M shares | 1.7M | New |
| 3 | MARSHALL WACE, LLP | $3.9M · 1.3M shares | 1.3M | New |
| 4 | BlackRock, Inc. | $3.8M · 1.3M shares | 1.3M | +114.3% |
| 5 | TUDOR INVESTMENT CORP ET AL | $2.4M · 818.5K shares | 818.5K | New |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $2.3M · 767.5K shares | 767.5K | +61.8% |
| 7 | UBS Group AG | $1.9M · 646.2K shares | 646.2K | +1,629.6% |
| 8 | VANGUARD FIDUCIARY TRUST CO | $1.2M · 416.9K shares | 416.9K | +69.3% |
| 9 | STATE STREET CORP | $1M · 353.1K shares | 353.1K | +46.8% |
| 10 | Informed Momentum Co LLC | $716.5K · 241.2K shares | 241.2K | New |
Sign in to see each holder’s Holder IQ, factor-adjusted Holder IQ and rank, and compare these holders with all scored filers. Available on every plan.
Sign in5% holder filings (13D / 13G)
Holders of more than 5% of GCTS file with the SEC within days. A 13D holder may seek to influence the company; a 13G holder is passive. Each holder’s latest filing from the last three years.
| Filed | Holder | % of class |
|---|---|---|
| May 15, 2026 | TD SECURITIES (USA) LLC13G · passive · amended | 4.6%under 5% |
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