PS일렉트로닉스

Business Overview

PS Electronics originally began as a maker of power amplifier modules (PAM) within RF front-end modules (FEM) for mobile handsets. Following its 2017 acquisition of PS System (communication modems for KEPCO electricity meters), it formed three business pillars through the July 2024 acquisition of PS Onyx (automotive electronic components) and the January 2025 acquisition of Youngjin Hi-Tech (semiconductor process automation and test handlers). On 2026-04-30, it disclosed a supply contract for high-performance server equipment and components with Nasdaq-listed AI server company Super Micro Computer, Inc. (SMCI), worth approximately KRW 102.9 billion (about 82% of 2025 consolidated revenue); payment was reported to have been fully prepaid by 2026-05-19 (secondary source, requires verification against the original disclosure). The contract performance period is 2026-04-30 to 08-14, and on 2026-07-22 a separate supply contract for high-performance server equipment worth approximately KRW 30.9 billion (contract term 2026-07-22 to 11-20) was additionally disclosed.

Funding for new business expansion has repeatedly been raised through the issuance of exchangeable bonds (EB) backed by holdings of listed equities (six issues including Wisol and Hana Micron), with an additional EB issuance of approximately KRW 22.0 billion decided on 2026-04-24. The revenue breakdown by business segment is unavailable, as it has not been directly confirmed against the original source.

5-Year Financial Trend

Revenue grew rapidly from 2021 to 2024 (+79.2% YoY in 2024), but growth slowed to +2.7% in 2025 (4-year revenue CAGR of +20.25%). Net income has shown volatility, alternating between profit and loss every other year since 2021, and the debt-to-equity ratio at the end of the 2026 first half (141.64%) rose sharply from the end of 2025 (73.92%) — total assets also increased by approximately 58.5% over the same period, from KRW 231.88 billion to KRW 367.31 billion. The detailed causes of this surge (increases in borrowings, trade receivables, etc.) are unavailable, as they have not been confirmed against the original financial statement notes.

Competitive Landscape

PS Electronics operates three business pillars — ① RF power amplifier modules (PAM), ② semiconductor process automation and test handlers (Youngjin Hi-Tech), and ③ automotive electronic components (PS Onyx) — with different competitors for each pillar.

Valuation (Factual Multiples)

There is a large gap between the PER based on simple annualization of cumulative 2026 first-half net income (10.68x) and the PER based on actual 2025 annual net income (27.50x); this is due to the pattern of net income alternating between profit and loss every other year, making it difficult to interpret the annualized figure as equivalent to actual annual performance. EV/EBITDA is unavailable, as a detailed breakdown of depreciation and net borrowings has not been obtained.

Supply-Demand Trends

On a cumulative basis for 2026-07-21 to 08-19 (approximately 21 trading days), institutions showed net buying (+1,016,032 shares), while individuals (-341,339 shares) and foreign investors (-712,870 shares) showed net selling (compiled by alphasquare.co.kr, not cross-checked against KRX source data — reference figure). However, the foreign investor cumulative figure was heavily driven by a single large net inflow of +1,604,919 shares on 2026-08-13 (with individuals at -2,297,086 shares the same day); excluding that day, foreign investors recorded net selling on 14 of the remaining 20 trading days. As of 2026-08-18, short-selling volume was 11,271 shares (0.2% of that day's trading volume), and the short-selling balance was 606,682 shares (1.3% of listed shares), both low levels; foreign ownership stood at 1.34% as of 2026-08-19.

Governance & Capital Structure

PS Electronics is controlled by CEO Yoo Dae-gyu and related parties as the largest shareholder. The sequential conversion of 5,769,227 redeemable convertible preferred shares (RCPS) issued on 2025-01-31 acted as a dilution factor, though this was partially offset by the concurrent acquisition and retirement of treasury shares (cumulative approximately 3.07 million shares). Consolidated subsidiaries listed in the equity investment status disclosure include Pentastone Investment (100%), Y-Palm STC (100%), PS System (55%), PS Onyx (76%), and two Vietnamese entities; the ownership structure at the sub-subsidiary level is unavailable, as it is not separately disclosed on DART.

Macro Environment

Up-to-date demand indicators directly tied to the PAM business, such as Samsung Electronics' 5G smartphone shipments, were not available.

Key Disclosure & News Timeline

Risk Factors

• A single contract (SMCI, approximately KRW 102.9 billion) accounts for approximately 82% of 2025 consolidated revenue, indicating high dependence on a specific customer. The contract performance period is short, from 2026-04-30 to 08-14, and whether follow-on revenue will continue after its conclusion is unavailable.
• Net income has shown volatility, alternating between profit and loss every other year since 2021. The return to profit in 2025 was reported to be influenced by an increase in valuation gains on financial assets (reported 2026-02-10, requires verification against the original source).
• The debt-to-equity ratio at the end of the 2026 first half rose sharply to 141.64% from 73.92% at the end of 2025. Item-level causes of the surge in assets and liabilities are unavailable, as they have not been confirmed against the financial statement notes.
• Exchangeable bond (EB) issuances backed by holdings of listed equities have recurred (including approximately KRW 22.0 billion on 2026-04-24).
• The stock was designated an Investment Caution Issue on 2026-05-06 and received an advance notice of Investment Alert Issue designation on 2026-05-13, followed by several profit-taking-driven sharp declines.
• Two dissimilar businesses were acquired within approximately six months, from July 2024 (PS Onyx) to January 2025 (Youngjin Hi-Tech); quantitative information on the new businesses' profit contribution and integration is unavailable.