SEC쎄크

SEC remains loss-making on trailing results, and its shares have fallen sharply over the past year.

SEC makes electron-beam-based inspection equipment, mainly X-ray systems for semiconductor and battery customers. For the trailing twelve months to H1 2026, revenue was ₩55.7B against an operating loss of ₩6.5B and a net loss of ₩5.2B. The share price closed at ₩5,420 on 2026-10-26, well below its 52-week high of ₩19,530.

What stands out

• Trailing operating margin is -11.7% and net margin is -9.4%, compared with an operating margin of -5.2% for full-year 2025, so losses have widened on the trailing basis.
• Cash of ₩13.1B is above borrowings of ₩11.3B, and trailing free cash flow is positive at about ₩0.7B, though liabilities are 235.1% of equity.
• The stock is down 38.2% over one year and 9.1% over one month, and the market value is about ₩47.8B.
• Foreign ownership fell from 4.9% to 3.8% over the past 60 days, and foreign investors were net sellers over the last 20 days while retail investors were net buyers.
• Filings in 2026 include several major sales or supply contracts, most recently on 2026-09-15, but the data does not state their size or terms.

What to watch

• The next quarterly results and whether operating losses narrow from the trailing level.
• Details of the major supply contracts and any further management or shareholding filings.
• Balance sheet strength, given high leverage relative to equity and modest cash relative to borrowings. The data includes no news headlines for the period.