⚠ Discipline Failed as Recently as 2023High threat

SK hynix (SKHY) — threat to the moat

The year SK hynix sold memory for less than it cost to make had exactly three DRAM producers in it.

It is tempting to read the current structure as proof that memory has been fixed. The most recent evidence says otherwise, and it is recent.

SK hynix, 2023, ₩ trillion₩32.8TRevenue₩33.3TCost of sales-₩7.7TOperating loss-₩9.1TNet lossCost of sales exceeded revenue for the full year - a gross loss before any R&D.
Three producers, and the product still sold for less than it cost to make.

In 2023 SK hynix sold ₩32,766 billion of memory that cost ₩33,299 billion to make, and reported an operating loss of ₩7,730 billion and a loss for the year of ₩9,138 billion1. That happened with exactly three DRAM players and exactly the market structure being described as a moat elsewhere on these pages. Consolidation did not prevent it. Three disciplined companies turned out to be three companies each waiting for the other two to cut first.

The mechanism is worth understanding because it will recur. Memory fabs are enormously capital-intensive and their costs are almost entirely fixed. Once built, the marginal cost of another wafer is low, so the rational short-run decision for any individual producer is to keep running and sell at whatever the market pays. Every producer reasons identically, output does not fall, and the price goes through cost. Oligopoly does not repeal that arithmetic; it only makes the recovery faster once someone blinks.

What is genuinely different now is the balance sheet — ₩88 trillion of cash against ₩18.6 trillion of debt, a net cash position of ₩69.4 trillion2 — which means the next downturn is survivable in a way the last one was uncomfortable.

Watch inventory days across all three producers together. Rising inventory at every producer simultaneously is what precedes every memory bust, and it is visible a quarter or two before the price breaks.

References
  1. Reported2023 revenue of ₩32,766bn against ₩33,299bn of cost of sales, an operating loss of ₩7,730bn and a loss for the year of ₩9,138bn.
    SK hynix Inc., Form 424B4 prospectus — consolidated income statements and management's discussion (SEC, CIK 2120882). FY2025: revenue W 97,147bn, cost of sales W 38,456bn, gross profit W 58,691bn, selling and administrative expenses W 5,019bn, research and development W 6,466bn, profit for the year W 42,948bn. FY2024: revenue W 66,193bn, gross profit W 31,828bn, R&D W 4,436bn, profit W 19,797bn. FY2023: revenue W 32,766bn, cost of sales W 33,299bn, a gross loss of W 533bn, an operating loss of W 7,730bn and a loss for the year of W 9,138bn, following a fall in memory prices from the third quarter of 2022. Q1 2026: revenue W 52,576bn, cost of sales W 10,897bn, gross profit W 41,679bn, R&D W 2,451bn, profit W 40,346bn. — FY2023-FY2025 and Q1 2026 · publ. 2026-07-10 · source ↗
  2. Reported₩87,957.9bn of cash against ₩18,586.6bn of borrowings at 30 June 2026.
    SK hynix Inc., semi-annual business report for the six months to 30 June 2026 (SEC Form 6-K, 18 August 2026) — 'The Company determines supply volumes and prices on a monthly and quarterly basis by mutual agreement with major customers, and there is no order backlog based on long term supply contracts.' Total equity W 262,693,228 million at 30 June 2026 against W 120,666,751 million at 31 December 2025; cash and cash equivalents, short-term financial instruments and short-term investment assets W 87,957,923 million against W 34,942,253 million; total borrowings W 18,586,634 million against W 22,247,905 million; debt-to-equity 32.80%, net borrowing ratio not disclosed because it is negative. For the six months to 30 June 2026, revenues of W 17,608,702 million (13.35%) and W 17,187,421 million (13.03%) were derived from external Customers A and B respectively; for the six months to 30 June 2025, W 10,890,639 million (27.31%) came from Customer A. IDC market share: DRAM 29.9% in 2023, 33.4% in 2024, 34.8% in 2025 and 29.1% in Q1 2026; NAND 19.6%, 21.4%, 20.9% and 18.5%. Gartner's world DRAM market: US$78.7bn in 2022 (-15.4%), US$49.9bn in 2023 (-36.5%), US$91.6bn in 2024 (+82.7%) and US$146.9bn in 2025 (+60.0%). Announced investments include approximately W 15 trillion for M15X in Cheongju, approximately W 19 trillion for the P&T7 advanced packaging plant and W 21,608.1 billion for Yongin, against long-term plans of roughly W 600 trillion for the Yongin cluster and W 100 trillion for Cheongju. The company developed the world's first 321-layer QLC NAND. China's State Administration for Market Regulation cleared the Intel NAND acquisition conditionally, obliging the group to maintain a reasonable pricing policy, increase production and support the entry of third-party competitors into the Chinese eSSD market for five years from December 2021. — six months to 30 June 2026 · publ. 2026-08-18 · source ↗
Sources
Generated September 23, 2026