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Semilux International Ltd. (SELX) Stock Price, News & Analysis

SELX NASDAQ
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Price Move History

Daily moves over 5%
101 252 sessions, June 5, 2025 to June 5, 2026
Largest daily move
+85.5% close of November 10, 2025
1-year change
-75% closing prices, June 5, 2025 to June 5, 2026
1-month change
-9% closing prices, May 5, 2026 to June 5, 2026

Company Description

Semilux International Ltd. (NASDAQ: SELX) is a technology company in the electronic components industry, focused on optical and 3D sensing applications. The company is domiciled in the Cayman Islands and operates through its subsidiaries, Taiwan Color Optics, Inc. ("TCO") and Semilux Ltd., a Cayman Islands exempted company with limited liability. Semilux’s ordinary shares trade on the Nasdaq market under the ticker symbol SELX.

TCO is described as an optical and 3D sensing technology company that is primarily involved in the customization, design and supply of optical components and integrated chip for various industries, including autonomous driving, intelligent lighting, and unmanned aerial vehicles. In collaboration with its clients, TCO conceptualizes and produces high precision optics and sensing modules that are specifically customized to clients’ needs for ease of integration in overall design and production. According to company disclosures, applications for TCO’s products include automotive laser headlight systems, adaptive driving beams (ADB), as well as light detection and autonomous driving systems (LiDAR).

Semilux’s business is closely linked to the development and deployment of LiDAR and ADB components and solutions. In company communications, Semilux is described as a provider of application-specific integrated circuit (ASIC), LiDAR and ADB components and solutions. TCO has undertaken the complete design of essential chips and components within LiDAR and ADB modules, including OPA, VCSEL, FMCW, ASIC and optical components. The company states that this work is intended to provide a cost-effective, calibration- and maintenance-light, scalable and reliable high-performing System-on-Chip (SoC) for these applications.

Semilux’s structure reflects its origins in a business combination. Chenghe Acquisition Co., a special purpose acquisition company (SPAC), completed a business combination with Taiwan Color Optics, Inc. and a newly formed holding company, Semilux International Ltd. Following the closing of this transaction, Semilux became the listed holding company, and its ordinary shares began trading on the Nasdaq Capital Market under the SELX symbol. TCO continues to operate as a subsidiary, bringing its experience in laser modules and components across various sectors into the combined group.

The company’s disclosures emphasize the role of its technology in autonomous driving and related safety-focused applications. Semilux and TCO highlight LiDAR and ADB technologies as central to their product and development efforts, with stated applications in automotive laser headlight systems, adaptive driving beams and autonomous driving systems. TCO also indicates plans to leverage Taiwan’s semiconductor vertical supply chain to facilitate production of chipsets used in its LiDAR and ADB products.

Semilux has also described initiatives in research and development. The company announced an R&D program with academics and scholars in universities in Taiwan to jointly develop a solid-state LiDAR module for automotive applications, focusing on Optical Phased Array (OPA) technology. The program is described as being sponsored by the National Science and Technology Council in Taiwan and intended to address weaknesses in current OPA technology for solid-state automotive LiDAR modules. Within this program, Semilux is described as working on an OPA-based chip integrated with silicon photonics circuits as an integral component in solid-state LiDAR modules.

In addition to its operational and R&D activities, Semilux has engaged in capital markets transactions. The company announced a common stock purchase agreement with White Lion Capital, LLC, described as a committed equity facility that gives Semilux the right, subject to conditions, to sell up to a specified amount of its common stock. The company has stated that it intends to use net proceeds from this arrangement for working capital to advance its ASIC, LiDAR and ADB technologies.

Semilux has also reported interactions with Nasdaq regarding continued listing requirements. Company announcements describe receiving notifications related to minimum bid price requirements, market value of listed securities requirements, and timely filing of its annual report on Form 20-F. In these communications, Semilux has stated that such notices had no immediate effect on the listing of its ordinary shares and that the company intended to monitor its status and evaluate options to regain or maintain compliance with applicable Nasdaq listing rules.

Overall, according to its public disclosures, Semilux International Ltd. presents itself as a Cayman Islands–domiciled holding company in the technology sector, with operations conducted through subsidiaries focused on optical components, 3D sensing, LiDAR and adaptive driving beam technologies for applications in autonomous driving, intelligent lighting and unmanned aerial vehicles.

Stock Performance

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Last updated:
-75%
Performance 1 year
$14.7M

Semilux International Ltd. (SELX) closed at $0.3400 on June 5, 2026. Over the past 12 months, the price has lost 75.0%.

See what a $1,000 investment in SELX would be worth today

SELX Metrics & Rankings

Price returns through June 5, 2026. Month-to-date and YTD include the first trading day. Ranking links may use different dates.

Financial Highlights

Semilux International Ltd. generated $3.7M in revenue in FY2024, retaining a -23.7% gross margin, operating income reached -$5.4M (-147.0% operating margin), and net income was -$3.7M, reflecting a -100.3% net profit margin. Diluted earnings per share stood at -$0.10. The company generated $66K in operating cash flow. The current ratio was 1.07, measuring current assets divided by current liabilities.

$3.7M
Revenue (FY2024)
-$3.7M
Net Income (FY2024)
$66K
Operating Cash Flow

Upcoming Events

Short Interest History

Last 12 Months

Short interest in Semilux International Ltd. (SELX) currently stands at 343.1 thousand shares, down 10.7% from the previous reporting period. Since October 2025, short interest has increased by 2114.4%.

Days to Cover History

Last 12 Months

Days to cover for Semilux International Ltd. (SELX) currently stands at 2.2 days. The ratio is the reported short interest divided by the average daily trading volume. Since October 2025, the figure has increased by 124%. Across the settlements charted above, it has ranged from 1.0 to 18.1 days.

SELX Company Profile & Sector Positioning

Semilux International Ltd. (SELX) and is listed on the NASDAQ.

Investors comparing SELX often look at related companies in the same sector, including Research Frontiers Inc (REFR), Data I/O Corp (DAIO), CPS Technologies Corp. (CPSH), Maris-Tech Ltd. (MTEK), and Sigmatron International Inc (SGMA). Comparing financial metrics, valuation ratios, and stock performance across these peers can help investors evaluate SELX's relative position within its industry.

Frequently Asked Questions

What is the current stock price of Semilux International Ltd. (SELX)?

The current stock price of Semilux International Ltd. (SELX) is $0.34 as of June 5, 2026.

What is the market cap of Semilux International Ltd. (SELX)?

The market cap of Semilux International Ltd. (SELX) is approximately $14.7M. Learn more about what market capitalization means .

What is the revenue of Semilux International Ltd. (SELX) stock?

The FY2024 revenue of Semilux International Ltd. (SELX) is $3.7M, from its most recent completed fiscal year.

What is the net income of Semilux International Ltd. (SELX)?

The FY2024 net income of Semilux International Ltd. (SELX) is -$3.7M, from its most recent completed fiscal year.

What is the earnings per share (EPS) of Semilux International Ltd. (SELX)?

The diluted earnings per share (EPS) of Semilux International Ltd. (SELX) is -$0.10 for FY2024, its most recent completed fiscal year. Learn more about EPS .

What is the operating cash flow of Semilux International Ltd. (SELX)?

The operating cash flow of Semilux International Ltd. (SELX) is $66K. Learn about cash flow.

What is the profit margin of Semilux International Ltd. (SELX)?

The net profit margin of Semilux International Ltd. (SELX) is -100.3%. Learn about profit margins.

What is the operating margin of Semilux International Ltd. (SELX)?

The operating profit margin of Semilux International Ltd. (SELX) is -147.0%. Learn about operating margins.

What is the gross margin of Semilux International Ltd. (SELX)?

The gross profit margin of Semilux International Ltd. (SELX) is -23.7%. Learn about gross margins.

What is the current ratio of Semilux International Ltd. (SELX)?

The current ratio of Semilux International Ltd. (SELX) is 1.07, measuring current assets divided by current liabilities. Learn about liquidity ratios.

What is the gross profit of Semilux International Ltd. (SELX)?

The gross profit of Semilux International Ltd. (SELX) is -$868K for FY2024, its most recent completed fiscal year.

What is the operating income of Semilux International Ltd. (SELX)?

The operating income of Semilux International Ltd. (SELX) is -$5.4M. Learn about operating income.

What does Semilux International Ltd. do?

According to the company’s disclosures, Semilux International Ltd. is a technology company in the electronic components industry that operates through subsidiaries focused on optical and 3D sensing applications. Its subsidiary Taiwan Color Optics, Inc. (TCO) is involved in the customization, design and supply of optical components and integrated chip for industries such as autonomous driving, intelligent lighting and unmanned aerial vehicles.

How does Semilux International Ltd. participate in the LiDAR and ADB markets?

Company statements describe Semilux as a provider of application-specific integrated circuit (ASIC), LiDAR and adaptive driving beam (ADB) components and solutions. Its subsidiary TCO has undertaken the complete design of essential chips and components within LiDAR and ADB modules, including OPA, VCSEL, FMCW, ASIC and optical components, which are intended to support high-performing System-on-Chip (SoC) solutions for these applications.

What industries use Semilux’s and TCO’s optical and sensing products?

Based on company descriptions, TCO’s optical components and integrated chip are supplied for industries including autonomous driving, intelligent lighting and unmanned aerial vehicles. Applications cited by the company include automotive laser headlight systems, adaptive driving beams (ADB) and light detection and autonomous driving systems (LiDAR).

What is the relationship between Semilux International Ltd., Taiwan Color Optics, Inc. and Chenghe Acquisition Co.?

Chenghe Acquisition Co., a special purpose acquisition company, completed a business combination with Taiwan Color Optics, Inc. and a newly formed holding company, Semilux International Ltd. Following the closing of this business combination, Semilux became the listed holding company, and TCO operates as a subsidiary under Semilux.

On which exchange does Semilux International Ltd. trade and under what symbol?

Company announcements state that ordinary shares of Semilux International Ltd. trade on the Nasdaq market under the ticker symbol SELX. The shares are described as having commenced trading on the Nasdaq Capital Market under this symbol after completion of the business combination involving Chenghe Acquisition Co. and Taiwan Color Optics, Inc.

Where is Semilux International Ltd. domiciled?

Semilux International Ltd. is described in its public communications as being domiciled in the Cayman Islands. It operates through subsidiaries, including Taiwan Color Optics, Inc. and Semilux Ltd., which is also described as a Cayman Islands exempted company with limited liability.

What research and development initiatives has Semilux reported?

Semilux has announced a research and development program with academics and scholars in universities in Taiwan to jointly develop a solid-state LiDAR module for automotive applications. The program focuses on Optical Phased Array (OPA) technology and is described as being sponsored by the National Science and Technology Council in Taiwan, with Semilux working on an OPA-based chip integrated with silicon photonics circuits.

What capital markets transactions has Semilux International Ltd. disclosed?

The company has disclosed a common stock purchase agreement with White Lion Capital, LLC, described as a committed equity facility that gives Semilux the right, subject to limitations and conditions, to sell up to a specified amount of its common stock. Semilux has stated that it intends to use the net proceeds from this transaction for working capital to advance its ASIC, LiDAR and ADB technologies.

What Nasdaq listing compliance issues has Semilux reported?

Semilux has reported receiving Nasdaq notifications regarding minimum bid price requirements, market value of listed securities requirements and timely filing of its annual report on Form 20-F. In these disclosures, the company stated that the notifications had no immediate effect on the listing of its ordinary shares and that it intended to monitor its status and evaluate options to regain or maintain compliance with the relevant Nasdaq listing rules.

What applications are mentioned for TCO’s LiDAR and ADB technologies?

Company descriptions state that applications for TCO’s products include automotive laser headlight systems, adaptive driving beams (ADB) and light detection and autonomous driving systems (LiDAR). The technologies are positioned for use in autonomous driving, intelligent lighting and unmanned aerial vehicle contexts.