FADU is a fabless company that only designs chips rather than building fabrics, and its mainstay is the SSD controller, the brain of the enterprise SSDs used in data-center servers. In the first quarter of 2026 about 80% of revenue came from this controller, and because customers are concentrated among a few large hyperscalers and overseas NAND makers, quarterly results tend to swing. Since April 2026 the company has signed SSD-controller supply contracts of roughly ₩50.0 billion, ₩28.7 billion and ₩15.2 billion in succession, improving visibility on this year's revenue; the quarterly report on May 12 confirmed a return to profit, and in early June it unveiled a Gen6 controller at Computex. What stands out lately is that, as one of the few suppliers into the SSD-controller shortage created by AI data centers, the company returned to profit while cumulative orders far exceeded prior-year revenue, giving strong earnings visibility; yet with profitability only just recovered its equity is thin and the debt ratio high, and because revenue recognition from supply contracts is uneven across quarters, the valuation is not low even measured against recovering earnings.
At-a-glance assessment financial health · growth · profitability · valuation
- Debt far exceeds equity (debt ratio 634.1%).
- The most recent full-year net result was a loss.
- Revenue rose 112.4% year over year, and the pace is quickening (3-year trend: rising).
- Most recent quarter (Q1 2026) revenue was 209.8% higher than a year earlier.
- ROE is -391.7% (controlling-interest basis). It is below the sector average.
- Operating margin is -70.8%.
- The forward P/E sits above the sector median, reflecting elevated expectations.
Ownership & governance As of 2025-12-31
Largest shareholder Nam I-hyun 11.67% (individual)
Controlling bloc incl. related parties 25.33%
With the controlling bloc holding 25%, control is maintained but the free float is relatively large.
🔎 In-depth analysis
- FADU is a fabless company that builds no fabs of its own and only designs chips; its mainstay is the SSD controller, which acts as the brain of the enterprise SSDs (high-capacity storage devices) used in data-center servers.
- The SSD controller is a core chip that governs how fast and reliably data is read from and written to NAND flash memory, and because it demands high performance, power efficiency and stability, only a handful of companies worldwide can develop and mass-produce it.
- In the first quarter of 2026 about 80% of revenue came from this controller, with finished SSDs built around the controller added on top.
- Customers are global hyperscalers running large cloud and AI infrastructure and overseas NAND flash makers, and because deliveries are concentrated among a few large customers, quarterly results swing with the timing and volume of orders, an intrinsic feature of this business.
- The latest close is ₩71,800 and the market cap is ₩3.6 trillion.
- The price sits below both its 20-day line (₩88,465) and its 60-day line (₩90,228).
- Trading below both the short- and medium-term moving averages, the trend looks subdued.
- The RSI (a supplementary gauge that scores upward versus downward force over the past 14 days on a 0-100 scale) is 38.4, a neutral level.
- The one-month change is -27.9%, the three-month change is +52.8%, and the price sits -44.0% below its 52-week high.
- Relative strength versus the KOSDAQ is 97 (on a 1-99 scale that weights recent performance versus the index over the past year more heavily; higher means stronger than the market).
- That places it in roughly the top 2% of all stocks by strength.
- Over the past three months it beat the index by 72.9%.
- It is best to read the chart alongside trading volume and the dates of disclosures.
- The metrics must be read by period.
- The on-screen P/B (how many times book net assets the price is) of 186.30x, P/S of 44.8x, ROE of -391.7% and operating margin of -70.8% all reflect the loss-making 2025 trailing results.
- The unusually high P/B and P/S are not because the company is expensive but an optical distortion: repeated losses thinned shareholders' equity (₩19.3 billion), mathematically inflating the multiples.
- The debt ratio of 634% is likewise magnified by thin equity, so it should be read together with absolute amounts.
- The more important change comes next.
- In the first quarter of 2026 FADU returned to profit with ₩7.7 billion in operating profit and ₩10.2 billion in net profit (a 17.2% net margin), and for a company whose earnings bend from loss to profit like this, actual earning power is better judged by the post-profit trajectory than by last year's numbers.
- Annual revenue rose from ₩22.5 billion in 2023 to ₩43.5 billion in 2024 and ₩92.4 billion in 2025, roughly doubling for two straight years, and the three-year CAGR of 102.8% shows the pace accelerating.
- That trend clearly shifted in the first quarter of 2026, when quarterly revenue reached ₩59.5 billion (+209.8% year over year) and the company posted its first profit with ₩7.7 billion in operating profit and ₩10.2 billion in net profit.
- The driver is clear.
- As AI data-center expansion drives a surge in demand for high-performance enterprise SSDs, PCIe Gen5- and Gen6-class controllers are in global short supply, and FADU is one of the few suppliers in that scarce area.
- Through 2026, large supply contracts of about ₩50.0 billion (5/6), ₩28.7 billion (5/22) and ₩15.2 billion (4/13) followed one after another, and new cumulative orders topped ₩300.0 billion by early June, already far exceeding 2025 full-year revenue.
- Once revenue passes a certain scale, in a design company the portion beyond fixed costs falls straight to profit; sustaining the Q1 net margin of about 17% and this order backlog leaves room for this year's earnings to exceed a simple fourfold of the first quarter.
- This is the real picture for this year that was invisible on last year's loss basis, and at Computex in June the company unveiled its next-generation Gen6 controller for the first time, extending the hook into next-generation demand as well.
- The center of 2026 filings is a string of large supply contracts.
- Since April, the company signed single-buyer supply contracts for enterprise SSD controllers of about ₩50.0 billion, ₩28.7 billion and ₩15.2 billion with overseas NAND flash makers and global customers, and these generally cover supply periods through the second half of 2026, improving this year's revenue visibility.
- If a contract is recognized in installments, however, it may not all be booked in a single quarter, so the recognition timing is best confirmed in subsequent quarterly reports.
- The Q1 quarterly report on May 12 officially confirmed the return to profit, and in early June the company unveiled its Gen6 controller at Computex, laying out its next-generation roadmap.
- On June 9 it held an investor briefing where it directly explained its order and earnings trends.
- The strengths are clear.
- FADU is one of the few suppliers into a strong demand environment, the enterprise SSD-controller shortage created by AI data centers, and in the first quarter of 2026 it turned to an actual profit alongside a revenue surge, with cumulative orders far exceeding prior-year revenue and giving high visibility on this year's results.
- As a design company whose profit follows quickly as revenue grows, there is ample room for growth and profit to move together so long as data-center storage demand holds up.
- The high P/B and P/S produced by past losses are an optical effect of thinned equity, and now that earnings have turned, it is right to read them by the pace of recovery.
- There are cautions too.
- Because the return to profit is early, equity is thin and the debt ratio high, and contract-based revenue can be uneven quarter to quarter as recognition timing varies.
- Even on the company's own estimate reflecting recovering earnings, the valuation is not low, so expectations of rapid growth are already substantially reflected in the price.
- In sum, this is a stock that is strong when demand and orders continue, margins hold and profit settles in over successive quarters, and that can wobble, given how high expectations run, if order recognition is delayed or a particular customer's volume rolls over.
🔎 Valuation vs peers Overvalued
The comparison uses domestic fabless and system-semiconductor design companies with figures available on the site. It includes firms that, like FADU, specialize in design and swing between loss and profit with wide quarterly amplitude; because listed Korean peers in FADU's exact business (data-center SSD controllers) are limited, a broad fabless group is used as a reference anchor.
| Peer | P/E | P/B | ROE |
|---|---|---|---|
| Gaonchips | — | 12.04x | -26.27% |
| Chips&Media | 42.91x | 3.01x | 7.01% |
| Telechips | — | 1.07x | -43.11% |
| ABOV Semiconductor | 12.65x | 1.08x | 8.50% |
(a) Position: among comparable fabless design companies, profitable peers sit at P/B levels of about 1.1x-3.1x, while FADU is far above at 214.3x. (b) Premium/discount: much of this gap is an optical effect of thinned equity from losses rather than the company being expensive, so the P/B and P/S cannot be read at face value. Still, even on recovered-earnings terms, the company's own estimated forward multiples are not low, so expectations of rapid growth are already substantially in the price. (c) Trailing limits and forward basis: the company was loss-making through 2025, so no trailing P/E existed; having passed the inflection with the Q1 2026 profit (₩7.7 billion operating profit), it should now be viewed on recovering earnings this year. Even reflecting that recovery, the multiples are already on the high side, making undervaluation hard to argue; we place it as Overvalued, a growth-premium zone justified by order fulfillment and whether margins persist.
Price history Close · MA20 · MA60
The latest close is ₩71,800 and the market capitalization is ₩3.6 trillion. The price sits below its 20-day moving average (₩88,465) and below its 60-day moving average (₩90,228). It is under both its short- and medium-term moving averages, so the trend looks subdued. The RSI (a supplementary indicator that gauges the strength of gains versus losses over the past 14 days on a 0-100 scale) is 38.4, a neutral level. The one-month change is -27.9%, the three-month change is +52.8%, and the position relative to the 52-week high is -44.0%. Relative strength versus the KOSDAQ is 97 (on a 1-99 scale, converted from returns against the index over the past year with more weight on recent performance; higher means stronger than the market). It is stronger than roughly 98% of all stocks. Over the past three months it outpaced the index by 72.9%. Chart interpretation is best done alongside trading volume and the dates on which disclosures occur.
Relative performance stock vs index · start = 100
Excess return vs index · 3M +72.90% / 6M +306.81% / 12M +418.72%
Key metrics vs sector median
Valuation
A net loss makes the P/E an unreliable valuation gauge. The P/B of 186.30x is above the sector median (2.10x).
Enterprise value (EV)
EV = market cap + net debt. It reflects cash and debt, so it captures the real cost of the whole business that market cap alone misses; lower multiples are cheaper relative to earnings or sales.
Profitability & financials
The operating margin is -70.8%. The debt ratio is 634.1%, so the financial structure is somewhat high.
Growth FY2025 · annual report (consolidated)
| Item | 2023 | 2024 | 2025 | YoY |
|---|---|---|---|---|
| Revenue | $14.9M | $28.8M | $61.3M | +112.44% ↑ faster |
| Operating profit | -$38.8M | -$63.0M | -$43.4M | — |
| Net profit | -$37.6M | -$60.0M | -$50.1M | — |
| 5-year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | — | — | $14.9M | $28.8M | $61.3M |
| Operating profit | — | — | -$38.8M | -$63.0M | -$43.4M |
| Net profit | — | — | -$37.6M | -$60.0M | -$50.1M |
| Revenue CAGR | 2-yr avg 102.80% | ||||
Revenue rose 112.4% year over year (2023 ₩22.5 billion → 2024 ₩43.5 billion → 2025 ₩92.4 billion), and the three-year trend is 'rising'. The pace of growth also quickened from the prior year. Operating results are in the red, so a swing back to profit matters more than the growth rate here. Over the 3 years on record, revenue compound annual growth (CAGR) is 102.8%. The two-year revenue CAGR is 102.8%. In the most recent quarter (Q1 2026), revenue was 209.8% higher than the same period a year earlier.
Latest quarterly results Q1 2026 · vs year-ago
Technical indicators
What stands out
- Revenue grew 112.4% year over year, a sign of growth.
Points to watch
- Debt far exceeds equity (debt ratio 634.1%).
- The most recent full-year net result was a loss.
- The most recent full year was a loss, so it is worth checking whether profitability recovers.
- The price is high versus peers, so expectations already appear priced in.
Recent news & events searched · sourced
- 2026-05-22UpdateSingle-buyer supply contract for enterprise SSD controllers of about ₩28.7 billion with an overseas customer (about 31% of 2025 revenue of ₩92.4 billion; supply period through the second half of 2026).A large order right after the return to profit that adds medium-term revenue visibility. Because installment recognition is possible, the revenue-booking timing needs checking. Source
- 2026-05-29FilingMultiple supply-contract filings submitted, including a correction filing on the single-buyer enterprise SSD-controller supply contract - finalizing updated contract terms.Confirms the terms and scale of consecutive large supply contracts. Verifies the durability of the order flow. Source
- 2026-05-12EarningsQ1 2026 quarterly report - consolidated revenue ₩59.5 billion, operating profit ₩7.7 billion, net profit ₩10.2 billion, a return to profit (revenue +209.8% year over year).Confirms a genuine return to profit after years of losses. A key basis for re-valuation on an earnings basis. Source
- 2026-06-09IRInvestor briefing held - the company directly explained its order status, earnings recovery and next-generation product (Gen6) roadmap.Official company communication on order and earnings trends. Presents a link into next-generation demand. Source
Figure cross-check computed ↔ external
| Metric | Computed | External | Status | Source |
|---|---|---|---|---|
| Q1 2026 revenue (cumulative) | ₩59.5 billion | ₩59.5 billion | Confirmed | link |
| Q1 2026 operating profit (return to profit) | ₩7.7 billion | ₩7.7 billion | Confirmed | link |
| Supply contract scale (about ₩28.7 billion) | base : ·approx. (2026-05-22, major) | DART ·approx. | Confirmed | link |
| 2026 expected net profit (in-house estimate) | approx. ₩42.0 billion | — | Unverified | link |
Recent filings
- 2026-06-09Disclosure
- 2026-06-09Disclosure
- 2026-06-02OwnershipOfficers'/major-shareholders' holdings report
- 2026-05-29Single supply/sales contract (amended)
- 2026-05-29Single supply/sales contract (amended)
- 2026-05-29OwnershipOfficers'/major-shareholders' holdings report
- 2026-05-29Single supply/sales contract
- 2026-05-28Single supply/sales contract
- 2026-05-22Single supply/sales contract
- 2026-05-15OwnershipOfficers'/major-shareholders' holdings report
- 2026-05-12PeriodicQuarterly report
- 2026-05-11OwnershipOfficers'/major-shareholders' holdings report
📖 Plain-language glossary — expand if you are new to this
- P/E
- How many times a year's net profit the price is worth (lower is cheaper relative to earnings). The P/E here is on trailing (last full-year) results; for companies whose earnings swing fast (memory chips and other cyclicals/high-growth), a forward P/E on this year's expected earnings is more accurate.
- P/B
- Price relative to net assets (equity). Around 1x means it trades near book value; below 1x means below book.
- P/S
- Price relative to a year's revenue — useful for growth companies with thin earnings.
- Net debt / EV
- Net debt = interest-bearing debt − cash. Negative means more cash than debt (net cash). EV (enterprise value) = market cap + net debt, closer to what it would cost to buy the whole business.
- EV/EBIT · EV/EBITDA · EV/Sales
- Enterprise value against operating profit (EBIT), EBITDA, or revenue. Unlike P/E these reflect debt and cash; lower is cheaper relative to earnings power or sales.
- FCF / FCF yield
- Free cash flow = operating cash − capex, the cash actually left over. FCF yield = FCF ÷ market cap; higher means more cash generated per unit of market value.
- Intrinsic value (DCF)
- Future free cash flow (or, for some capex-heavy but profitable names, forecast earnings) discounted to today to estimate per-share value. Because it shifts a lot with the discount-rate and growth assumptions, it is shown as a bear/base/bull range, and the basis and assumptions are disclosed in one line beneath it.
- ROE
- How much profit the company earns in a year on its equity (%). Higher means better returns on capital.
- EPS / BPS
- Earnings per share / net assets (book value) per share.
- Operating / net margin
- Profit left from the core business / final profit after tax and interest, per unit of revenue.
- Debt ratio
- Debt relative to equity (%). Higher means more reliance on borrowing (norms vary by sector).
- Current ratio
- Assets convertible to cash within a year against debt due within a year. Above 100% leaves some short-term headroom.
- Interest coverage
- How many times operating profit covers the interest owed. Below 1x means operating profit alone struggles to cover interest.
- Dividend yield / payout ratio
- The year's dividend as a % of today's price / the share of earnings paid out as dividends.
- Revenue CAGR
- Multi-year growth expressed as a single yearly average (compound annual growth rate).
- RSI (short-term signal)
- Whether recent price action is overheated or beaten down. Above 70 is overbought, below 30 oversold.
- MA20 / MA60 (moving averages)
- The 20- and 60-day average price. Price above them signals a firmer short-term trend.
- vs 52-week high
- How far below the past year's peak the price sits now (%).
All figures are for reference only; how they read varies by sector and over time.
Sources: Korea FSC market-price API (data.go.kr), OpenDART, KRX/KIND — public data only.
Bong Stocks presents public-data-based information for reference only. It is not investment advice and contains no target prices, ratings, or buy/sell recommendations. Verify independently before making any decision.