Jusung Engineering주성엔지니어링

Jusung Engineering's trailing profit has turned to an operating loss on sharply lower revenue, while its share price has swung widely over the past year.

Jusung Engineering makes semiconductor, solar and display manufacturing equipment, focused on thin-film deposition. Over the last twelve months to H1 2026 it reported revenue of ₩225.8B and an operating loss of ₩14.8B, though net income was positive at ₩7.2B. The shares closed at ₩167,600 on 2026-10-26, down 20% over one month but up 440.6% over one year.

What stands out

• Revenue fell from ₩409.4B in 2024 to ₩310.7B in 2025, and the trailing figure to H1 2026 is ₩225.8B.
• Operating margin was -6.6% on a trailing basis, compared with 10.1% for 2025 and 23.7% for 2024.
• Net income stayed positive at ₩7.2B on a trailing basis, so it is well above operating income, and free cash flow was -₩11.4B.
• Cash of ₩123.0B against borrowings of ₩45.0B; the filings data gives a liabilities-to-equity ratio of 46.4%.
• The DCF-based fair value model gives a base of ₩8,361, below the closing price; the model is a mechanical estimate, not a forecast or a recommendation.

What to watch

• Next quarterly and half-year results, to see whether the trailing operating loss continues.
• Ongoing 5%+ holding reports and the foreign ownership rise from 6.6% to 9.4% over 60 days.
• News on the next-generation memory development with Samsung and SK Hynix, and whether it shows up in reported revenue.