SK hynix built its lead by continuing to invest in HBM through the 2023 downturn, when a memory price collapse pushed it to a 7.73 trillion won annual operating loss. Samsung, by contrast, reportedly hit yield and qualification delays on its HBM3E chips that slowed major Nvidia orders, the proximate reason for a 61% share against a 17% one.
Samsung's remaining stronghold is conventional DRAM, but even that margin is shrinking. Bank of America estimates put SK hynix's monthly DRAM output at roughly 589,000 wafers this year against Samsung's 691,000. SK hynix is projected to expand output by about 38% between 2025 and 2028, compared with 17.5% at Samsung, which would cut the production gap to under 10% by 2028 from around 23% in 2025. The capacity both companies are pouring into HBM is not going into the commodity chips behind the memory shortage they've warned could run past 2027 , and SK hynix has pledged to double its memory wafer output within five years .
Samsung, meanwhile, disputes the ranking, telling Reuters that its market cap should include preferred shares, which would lift its value to 2,246.4 trillion won. The gap also reflects the HBM3 and HBM3E generations rather than what comes next. Nvidia CEO Jensen Huang confirmed earlier this month that Samsung, SK hynix, and Micron all passed HBM4 certification for the Vera Rubin platform, and Samsung shipped the industry's first 12-layer HBM4E samples on May 29th.
Samsung and SK hynix warn AI-driven memory shortages could last until 2027 and beyond, as HBM demand explodes
Intel, SK hynix shares surge following reports of chip packaging partnership — SK is said to be testing Intel's 2.5D EMIB for HBM integration
Samsung and SK hynix bonuses for chip workers flagged as a national inflation risk
SK Group Chairman Chey Tae-won, who pushed through the original Hynix acquisition despite internal opposition, explained the strategy in a book published in January. "What I really wanted to accomplish when we acquired Hynix was to transform it from a commodity memory producer into a mainstream semiconductor company whose products are indispensable," Chey said.
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