RootK루트K

RootK is a small machine-tool maker with deep losses, a market value near ₩18.5B, and a KOSDAQ administrative-issue warning filed on 2026-10-20.

RootK makes small computer-controlled machining centers for IT and automotive parts, and also has a biopharmaceutical licensing business and a semiconductor and secondary battery equipment unit through subsidiary ANH. Trailing twelve-month revenue is about ₩30.8B, but operating income is about -₩9.9B and free cash flow is about -₩7.1B. The share price closed at ₩1,136 on 2026-10-21, down 65.1% over one year.

What stands out

• Revenue has stayed roughly flat at ₩22B to ₩33B since 2021, while operating losses have persisted every year in the filed statements.
• In H1 2026 the trailing operating margin was -32% and net margin -16.4%, with borrowings of about ₩17.7B against cash of about ₩10.8B.
• The latest filing is an additional concern notice about possible designation as an administrative issue because market capitalization is below ₩20B.
• Filings in 2026 include a name change, a shareholders' meeting on a share consolidation, trading halts in July, and a decision to acquire own convertible bonds before maturity.
• No news headlines were included in the data, and the data gives no analyst ratings, price targets or forecasts.

What to watch

• Whether the KOSDAQ administrative-issue designation process advances, as flagged in the 2026-10-20 notice.
• The next filings on the share consolidation, the convertible bond buyback, and any further trading halts.
• Whether losses narrow and cash burn eases in future reported periods, since the data includes no forward estimates.