TL;DR — Samsung’s chip division posted operating profit up 1,804% year over year, SK Hynix hit a 76% operating margin, and Micron posted an 84.6% gross margin on revenue up 346%. But Samsung’s own phone division swung to a loss on higher chip costs, SK Hynix missed analyst estimates because fixed-price contracts capped its upside, and Micron’s exact margin profile was negative just three years ago.
The AI memory supercycle Third Pole flagged when Samsung’s DDR5 module prices jumped from $149 to $239 is now fully visible in earnings. Samsung, SK Hynix and Micron all reported the best margins in the memory industry’s history this quarter. None of the three had a clean quarter to go with it — each result came with its own specific catch, and the catches are different enough to be worth separating out.
Samsung: Record Profit, and a Self-Inflicted Loss
Samsung posted revenue of KRW 171.5 trillion (about $116.6 billion) and operating profit of KRW 89.5 trillion (about $60.9 billion) — up roughly 1,804% from KRW 4.7 trillion a year earlier. Virtually all of it came from one place: the Device Solutions division, which includes memory chips, posted $60.7 billion of that $60.9 billion in profit. Everything else Samsung makes combined for effectively nothing.
That “everything else” includes Samsung’s own phone business. The Mobile/MX division posted revenue of $22.6 billion but swung to an operating loss of roughly $476 million, because the same memory price surge inflating Samsung’s chip profits also raised the cost of the memory chips Samsung’s own phone division has to buy. Samsung’s memory boom is, in part, taxing Samsung’s own smartphone margins.
SK Hynix: A Record That Still Missed
SK Hynix posted revenue of KRW 79.3 trillion and operating profit of KRW 60.5 trillion, a 76% operating margin — among the highest margins any large chipmaker has ever reported. First-half 2026 revenue topped KRW 100 trillion for the first time, up 257% year over year, with operating profit up 557%. HBM4 entered mass shipments during the quarter. And the stock still fell, because both revenue and profit came in roughly 5–6% below analyst expectations.
The reason is structural rather than a demand problem: SK Hynix’s long-term supply contracts lock in pricing months in advance, which gave customers predictability but capped how much of the recent spot-price surge in DRAM actually flowed to SK Hynix’s bottom line this quarter. The company still posted a record. It just wasn’t as record-breaking as the models expected.
- Samsung: chip profit up 1,804%, but its own phone division lost money on higher chip costs.
- SK Hynix: 76% operating margin, a real record — that still missed Wall Street’s estimates by mid-single digits.
- Micron: 84.6% gross margin, up from -9.1% three years ago — a margin history that argues this is a peak, not a moat.
Micron: The Margin That Was Negative Three Years Ago
Micron’s fiscal third-quarter revenue reached $41.46 billion, up 346% from $9.30 billion a year earlier, with GAAP net income of $28.24 billion and a gross margin of 84.6%. Cost of revenue rose just 10.5%, meaning roughly 98 cents of every incremental revenue dollar fell straight to gross profit — an almost pure pricing story, not a volume one. Micron guided next quarter even higher: $50 billion in revenue, margins near 86%.
An 84.6% gross margin on a commodity chip isn’t evidence of a moat. It’s a measurement of how badly the market is short of memory right now — and this exact company posted a negative gross margin three years ago.
That’s the catch with Micron specifically: memory is a commodity business, and Micron’s own history is the best evidence. The company posted a -9.1% gross margin in fiscal 2023. An 84.6% margin today is the mirror image of that downturn, and margins this extreme have historically drawn a supply response from every competitor with a fab — which is exactly what eventually ended the last several memory upcycles.
All three companies are, for now, benefiting from the same dynamic Third Pole has tracked on the demand side at Nvidia’s advanced packaging constraints: AI infrastructure buildout is consuming memory faster than the industry can add capacity. Samsung, SK Hynix and Micron all guided to further improvement next quarter. Whether that holds through 2027, once the new capacity every one of them is now building actually comes online, is the question the current margins can’t answer.
Figures are drawn from Samsung Electronics’ official Q2 2026 results release, SK Hynix’s Q2 2026 business results, and Micron’s fiscal Q3 2026 earnings release filed with SEC EDGAR, with additional margin-history analysis from Beancount.io. Third Pole Markets holds no position in Samsung, SK Hynix or Micron as of publication; see our About page for the full disclosure policy.
