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JONBUR Research · Initiation

SFA Semicon · 036540 · Semiconductors

SFA Semicon: Sharp Share Price Rally Alongside Ongoing Operating Losses

Why this report

Start of coverage: one of the 300 largest companies, written once its financial statements were in.

SFA Semicon's shares rose 54.0% in one month and 136.4% over one year to ₩10,840, while trailing twelve-month results to H1 2026 still show an operating loss of ₩19.2B. The balance sheet is lightly leveraged, but the data shows no profit-based multiples and no model fair value estimate.

Written Oct 13, 2026 · Data as of Oct 12, 2026 · 0 views

This is not financial advice. The report does not recommend buying or selling anything.

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Thesis

The data supports a picture of a price move running well ahead of reported earnings. The close of ₩10,840 sits near the 52-week high of ₩12,370 and far above the low of ₩3,735, with returns of 111.7% over three months. Over the same period, filed financials show losses: TTM revenue of ₩449.6B, operating income of -₩19.2B and net income of -₩10.4B.

What the data supports: revenue over the trailing period is higher than the 2025 annual figure of ₩367.4B, and leverage is low. What it does not support: any visible return to profitability, since the TTM operating margin is -4.3% and free cash flow is -₩33.5B. Investor flows, foreign ownership, short balance and news headlines are not available, so the reasons for the rally cannot be identified from this data.

Business overview

SFA Semicon is a Semiconductors company listed on KOSDAQ since 2 May 2001, founded on 30 June 1998 and led by CEO 강문수. It has 164,460,303 listed shares and a market capitalisation of about ₩1.78T. Revenue peaked in the data at ₩699.4B in 2022, then fell 37.4% in 2023, 8.5% in 2024 and 8.3% in 2025 to ₩367.4B. Recent filings include a 5%+ holding report (29 Sep 2026), two money-lending decision filings (12 May and 8 Sep 2026), and a market segment change filing (30 Apr 2026); the filing titles alone do not give details.

Financial analysis

All figures come from filed financial statements (DART). Operating margin was 10.4% in 2021 and 9.0% in 2022, then fell to -3.8% in 2023, 0.0% in 2024 and -5.3% in 2025. Net income was ₩52.8B in 2021 and ₩42.9B in 2022, then -₩12.7B in 2023, ₩21.3B in 2024 and -₩19.1B in 2025. Note that 2024 net profit came despite a break-even operating result.

TTM to H1 2026: revenue ₩449.6B, operating loss ₩19.2B (-4.3% margin), net loss ₩10.4B (-2.3% margin), ROE -2.1%. Liabilities to equity is 20.4%, cash is ₩32.4B against borrowings of ₩5.0B, and free cash flow is -₩33.5B.

Valuation

Price-to-earnings and EV/EBITDA are not available because earnings are negative. Current P/B is 3.7 and P/S is 4.0, with enterprise value of about ₩1.76T and no dividend yield (0.0%). Year-end 2025 P/B was 1.6, so the book multiple has more than doubled alongside the share price; earlier year-end multiples are not available.

Among listed peers in the data, P/B is 4.5 for SK hynix, 2.4 for DB HiTek, 5.8 for HanaMicronInc and 59.6 for Fadu; P/E is 7.2, 16.9 and 18.8 for SK hynix, DB HiTek and HanaMicronInc. SFA Semicon's P/B sits within that range, though it has negative returns while those with P/E figures are profitable. No fair value model estimate is available (fair_value_model is null), so there is no model comparison to the share price.

Catalysts

  • The amended half-year report for June 2026 was filed on 13 Oct 2026, which may update the latest reported figures.
  • A 5%+ holding report on 29 Sep 2026 points to a change in a significant shareholding, though the data does not give details.
  • Money-lending decision filings on 12 May and 8 Sep 2026 may relate to use of company funds, but their terms are not in the data.
  • Insider shareholding reports on 26 May and 16 Jul 2026 show insider ownership activity, with no details available.
  • The next quarterly results would show whether the operating loss is narrowing, given the TTM margin of -4.3%.

Risks

  • The company has reported operating losses in 2023, 2025 and the TTM to H1 2026, and profitability has not been restored in the data.
  • Free cash flow of -₩33.5B against cash of ₩32.4B means the cash position could be drawn down if the trend continues.
  • The 54.0% one-month gain and price near the 52-week high mean the valuation (P/B 3.7) has moved far beyond the 1.6 seen at end-2025 without matching earnings.
  • Revenue declined for three straight years through 2025, from ₩699.4B in 2022.
  • Investor flow, foreign ownership, short interest and news data are unavailable, so the drivers of price moves are unclear.

Closing view

The evidence shows a large gap between market pricing and reported results. The share price has more than doubled in a year while filed financials show continued losses, negative free cash flow and no P/E to anchor value. Offsetting that, leverage is low at 20.4% liabilities to equity, TTM revenue is above the 2025 level, and P/B is within the range of the listed peers shown. With no model fair value and no flow or news data, the data alone cannot explain the rally or say whether it is sustainable; later filings will show if earnings are catching up.

Model estimate of fair value

The valuation model has no estimate for this company yet (not enough data, or no positive value with the base case).

Filings and data used

Report history

  1. Oct 13, 2026InitiationStart of coverage (300 largest)SFA Semicon: Sharp Share Price Rally Alongside Ongoing Operating Losses

Built only from jonbur's own data: prices and investor flows, filed financial statements and filings, and news headlines. Disclosed (filed) data is labelled as such. Written by AI and may contain mistakes.

This is not financial advice. The report does not recommend buying or selling anything.

Source: KRX statistical information