SK Hynix Rises to No.1 in Global Memory Market with HBM
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SK Hynix's Q1 net profit surged fivefold to KRW 40.35 trillion (~$26.7 billion), with an operating margin of 72% and a 57% global HBM market share that dethroned Samsung — AI's insatiable demand for compute is reshuffling the semiconductor hierarchy.
How extreme are these numbers?
SK Hynix posted KRW 40.35 trillion (~$26.7 billion) in Q1 net profit, a fivefold year-on-year jump.
Operating margin hit 72% — This means → for every $100 of chips sold, $72 is profit, richer than most software companies.
In plain terms = memory chips used to be a commodity business with razor-thin margins. HBM turned SK Hynix into a premium custom supplier, lifting profitability to a completely different tier.
What is HBM, and why is it suddenly so valuable?
HBM — high-bandwidth memory, a technology that stacks multiple DRAM layers vertically and moves data across ultra-short distances — is the critical component inside AI datacenter GPUs.
Nvidia integrates SK Hynix-supplied HBM directly into its GPUs. This means → every Nvidia GPU sale fills SK Hynix's order book.
SK Hynix actually built the world's first HBM in 2013, but no killer application existed until generative AI exploded around 2022.
This reflects a broader lesson: a decade-early technology lead means little without market timing — the payoff comes only when demand arrives.
Why SK Hynix and not Samsung?
Counterpoint Research data: SK Hynix held 57% of the global HBM market in Q4 2024; Samsung trailed at 22%.
SK Hynix signed a technology partnership with TSMC in 2024; its substrate technology creates a differentiated moat as HBM manufacturing complexity keeps rising.
SK Group Chairman Chey Tae-won calls the relationship with Nvidia and TSMC a "triangle alliance" — In plain terms = chip design (Nvidia) + fabrication (TSMC) + memory (SK Hynix), and the deeper the three bind together, the harder it is for a latecomer to break in.
From commodity to custom — what changed strategically?
The memory chip industry is notoriously cyclical — boom-era overbuilding, bust-era losses. SK Hynix itself posted a KRW 9 trillion net loss in 2023.
Now SK Hynix positions HBM as a custom product optimized for specific clients, not a standard commodity priced by the open market.
This means → pricing power sits with the seller, not with spot-market swings. That is the structural reason the margin can reach 72%.
How much more will they spend — and where is the risk?
SK Hynix plans to invest a cumulative KRW 103 trillion from 2024 to 2028 to expand capacity.
Chairman Chey believes "the semiconductor shortage may last until 2030." CFO Kim Woo-hyun says both customers and suppliers are emphasizing long-term supply-demand visibility, and "the likelihood of repeating past oversupply is low."
In plain terms = management's thesis is "this time is different" — AI demand is structural, not cyclical. But every major capex wave in history has heard the same argument; whether oversupply materializes still depends on whether AI compute demand actually delivers.
What does this mean for the industry landscape?
Samsung held the "memory king" title for years; SK Hynix now commands more than 2.5 times Samsung's share on the most lucrative memory track — HBM.
A 2025 Korean survey found SK Hynix has overtaken Samsung as the employer university graduates most want to join.
This signals that semiconductor competition in the AI era is no longer about "who has the most capacity" but "who sits closest to the AI supply-chain core" — and SK Hynix earned that seat by locking arms with Nvidia and TSMC.
Content is for reference only, not financial advice.