Semiconductors · Memory · HBM

SK hynix

The leader in HBM (high-bandwidth memory), supplying the memory inside AI accelerators on a near-exclusive basis. Revenue is heavily concentrated in a few AI-chip customers; cost flows to HBM bonding-equipment suppliers.

000660.KS Updated Jun 21, 2026 1 AI consumers· 1 recurring

Money in ▸NVIDIA●Revenue share ~27%Broadcom●Apple●Alphabet (Google)◐AMD◐Marvell◐Meta Platforms◐Amazon◐
SK hynix₩97.1T
▸ Money outHanmi Semiconductor●Contract value ₩44.2BASMPT●Supply share ~50%ASML●Soulbrain●ENF Technology●Wonik IPS●Jusung Engineering●Foosung●HPSP●PSK Inc●Tokyo Electron (TEL)●Shin-Etsu Chemical●SK Siltron●Advantest●Teradyne●SUMCO Corporation●Hanwha Semitech◐BESI◐Applied Materials◐KLA◐Lam Research◐Dongjin Semichem◐GlobalWafers◐

Financials & Segments

  • Total revenue · ₩97.1T (FY2025 consolidated)
  • Operating profit · ₩47.2T
  • Net income · ₩42.9T
  • Customer concentration · Largest single customer NVIDIA ~27% (1H2025 consolidated, ~₩11T)
  • Segments · Semiconductors(>90%)

Revenue from

  • NVIDIA High confidence· Revenue share ~27% · 1H2025 · consolidated · ≈₩11T
    HBM, DRAM, NAND. 2026 capacity effectively sold out.
    Mentions KO DART (FSS Electronic Disclosure) Published Mar 17, 2026: "SK business report (primary): major customers are set by monthly/quarterly agreement, names not disclosed. Semiconductors are 90%+ of revenue, FY2025 revenue about ₩97.1T, with world-first HBM4 mass production and customer shipment. The name 'NVIDIA' is inferred from media, not disclosed in the filing."
    Confirms EN SEC EDGAR Published Feb 26, 2026: "NVIDIA 10-K (FY2026): "We purchase memory from SK Hynix Inc., Micron Technology, Inc., and Samsung." Buyer-side primary filing confirming SK hynix to NVIDIA memory supply."
    Confirms EN TrendForce Published Aug 18, 2025: "NVIDIA accounts for about 27% (~₩11T) of SK hynix's 1H25 consolidated revenue."
    Confirms KO Aju Business Daily Published Aug 18, 2025: "First-half revenue from the single major customer (NVIDIA) was ₩10.8906T, about 27% of consolidated revenue."
    Confirms EN Notebookcheck Accessed Jun 19, 2026: "SK hynix has effectively sold out its 2026 capacity to NVIDIA orders."
  • Broadcom High confidence
    Supplies HBM at large scale for Broadcom's custom AI accelerators.
    Confirms KO The Elec Published May 20, 2025: "SK hynix supplies HBM to Broadcom at large scale."
  • Apple High confidence
    Supplies iPhone memory (LPDDR/NAND) to Apple.
    Confirms KO Korea Economic Daily Published Dec 21, 2025: "The iPhone gets LPDDR from all three memory makers: Samsung, SK and Micron."
  • Alphabet (Google) Medium confidence
    HBM/memory demand for AI cloud.
    Mentions EN Notebookcheck Accessed Jun 19, 2026: "Global AI clients (NVIDIA, Google, and others)."
  • AMD Medium confidence
    HBM customer for AI accelerators.
    Mentions EN Notebookcheck Accessed Jun 19, 2026: "Supplies HBM to global AI customers such as NVIDIA and Google."
  • Marvell Medium confidence
    Custom HBM collaboration for Marvell's custom AI chips.
    Confirms KO Korea Economic Daily Published Dec 11, 2024: "Marvell works with Samsung and SK hynix on custom HBM."
  • Meta Platforms Medium confidence
    Supplies HBM for Meta's MTIA (288GB) and data-center memory.
    Confirms EN Tom's Hardware Accessed Jun 20, 2026: "MTIA 400 carries 288GB of HBM at 9.2 Tbps."
  • Amazon Medium confidence
    Supplies HBM3e for Amazon’s Trainium3 (144GB) and data-center memory.
    Confirms KO Global Economic Published Dec 3, 2025: "Trainium3 carries 144GB of HBM3e."

Pays to

  • Hanmi Semiconductor High confidence· Contract value ₩44.2B · 2026-06-08 · Single-supply contract (latest)
    HBM TC bonder. Four single-supply contracts in the past year (₩42.8B→₩1.6B→₩9.7B→₩44.2B), up to 7.66% of Hanmi's revenue.
    Confirms KO DART (FSS Electronic Disclosure) Published Jun 8, 2026: "Counterparty SK hynix, contract value ₩44,200,000,000, 7.66% of Hanmi's recent revenue, starting 2026-06-08."
    Confirms KO DART (FSS Electronic Disclosure) Published Jan 14, 2026: "Counterparty SK hynix, contract value ₩9,650,000,000, 1.73% of Hanmi's recent revenue, starting 2026-01-14."
    Confirms KO DART (FSS Electronic Disclosure) Published Nov 14, 2025: "Counterparty SK hynix, contract value ₩1,567,500,000, 0.28% of Hanmi's recent revenue, starting 2025-11-14."
    Confirms KO DART (FSS Electronic Disclosure) Published May 16, 2025: "Counterparty SK hynix, contract value ₩42,812,000,000, 7.66% of Hanmi's recent revenue, starting 2025-05-16."
    Confirms EN The Elec Accessed Jun 19, 2026: "Hanmi Semiconductor signed a TC bonder (Griffin) supply contract with SK hynix for HBM4."
  • ASMPT High confidence· Supply share ~50% · 2026
    HBM4 TC bonder. About half of current orders.
    Confirms EN TrendForce Published Dec 12, 2025: "ASMPT supplies about half of SK hynix's roughly 50 HBM4 TC bonders."
  • ASML High confidence
    Buys EUV lithography from ASML (a major customer).
    Confirms EN Seoul Economic Daily Published Apr 17, 2026: "Samsung and SK secured two-thirds of ASML's 2025 EUV shipments."
  • Soulbrain High confidence
    Buys high-purity HF and etchants from Soulbrain (HBM/3D NAND).
    Confirms EN Komachine Accessed Jun 20, 2026: "SK hynix adopted Soulbrain high-purity HF."
  • ENF Technology High confidence
    Buys localized HF, BOE and etchant from ENF (NAND/HBM).
    Confirms KO THE ELEC Accessed Jun 20, 2026: "SK hynix first adopted ENF’s localized HF."
  • Wonik IPS High confidence
    Buys wafer-fab deposition tools from Wonik IPS.
    Confirms EN Seoul Economic Daily Published Jun 11, 2026: "SK capex expands Wonik IPS tool demand."
  • Jusung Engineering High confidence
    Buys all next-gen high-k DRAM ALD tools from Jusung Engineering.
    Confirms KO THE ELEC Accessed Jun 20, 2026: "SK hynix adopts all Jusung ALD tools."
  • Foosung High confidence
    Buys C4F6/WF6 specialty gases from Foosung (WF6 surges with 3D NAND).
    Confirms KO HuffPost Korea Accessed Jun 20, 2026: "SK hynix is a Foosung specialty-gas customer."
  • HPSP High confidence
    Buys high-pressure hydrogen annealing tools from HPSP (sole supplier).
    Confirms KO Korea Economic Daily Published Jul 13, 2025: "SK하이닉스 adopts HPSP high-pressure annealing tools."
  • PSK Inc High confidence
    Buys dry-strip tools from PSK (HBM/DDR5).
    Confirms KO THE ELEC Accessed Jun 21, 2026: "SK hynix adopts PSK tools."
  • Tokyo Electron (TEL) High confidence
    Buys coater, etch, deposition and clean tools from Tokyo Electron.
    Confirms KO Sisa Journal e Accessed Jun 21, 2026: "SK하이닉스 adopts TEL wafer-fab tools."
  • Shin-Etsu Chemical High confidence
    Buys 300mm silicon wafers from Shin-Etsu Chemical under LTA.
    Confirms KO ICN Magazine Published Jan 15, 2026: "SK하이닉스 depends on Shin-Etsu Chemical for wafer supply."
  • SK Siltron High confidence
    Buys 300mm and HBM4 wafers from affiliate SK Siltron.
    Confirms KO ICN Magazine Published Jan 15, 2026: "SK hynix secures HBM4 wafers early with SK Siltron."
  • Advantest High confidence
    Buys test equipment (ATE) from Advantest.
    Confirms KO AlphaBiz Published Sep 1, 2025: "Dominant HBM tester tech; SK hynix and others."
    Confirms EN Advantest Published Jun 1, 2025: "Annual report: ATE revenue and customers."
    Confirms EN Mordor Intelligence Published Jan 1, 2025: "No.1 in test equipment at ~58%."
  • Teradyne High confidence
    Buys test equipment (ATE) from Teradyne.
    Confirms KO Korea Economic Daily Published Feb 24, 2026: "Teradyne surges on the chip upturn."
    Confirms EN SEC EDGAR Published Feb 26, 2025: "10-K: semiconductor-test revenue."
    Confirms EN Teradyne Published Jan 1, 2025: "Memory, SoC and computing test."
  • SUMCO Corporation High confidence
    Buys 300mm silicon wafers from SUMCO Corporation under LTA.
    Confirms KO ICN Magazine Published Jan 15, 2026: "SK하이닉스 depends on SUMCO Corporation for wafer supply."
  • Hanwha Semitech Medium confidence
    Entering TC bonder supply.
    Mentions EN TrendForce Published Dec 12, 2025: "Hanwha Semitech entered the TC bonder supply chain this year."
  • BESI Medium confidence
    Expanding bonder share.
    Mentions EN TrendForce Published Dec 12, 2025: "BESI and ASMPT are gaining share from Korean suppliers."
  • Applied Materials Medium confidence
    Buys Applied Materials wafer-fab tools (memory/HBM).
    Mentions KO Asia Business Daily Published Apr 28, 2026: "SK hynix HBM capex drives tool demand."
  • KLA Medium confidence
    Buys KLA memory inspection/metrology tools.
    Confirms KO KIPOST Accessed Jun 20, 2026: "KLA supplies SK hynix with inspection tools."
  • Lam Research Medium confidence
    Buys Lam Research memory etch/deposition tools.
    Mentions KO Asia Business Daily Published Apr 28, 2026: "SK hynix memory capex."
  • Dongjin Semichem Medium confidence
    Buys materials such as HBM CMP slurry from Dongjin Semichem.
    Confirms KO DART (Korea FSS) Published Mar 20, 2026: "New CMP slurry supply for SK hynix HBM."
  • GlobalWafers Medium confidence
    Uses/buys 300mm silicon wafers from GlobalWafers.
    Confirms EN GlobalWafers Published Mar 1, 2025: "IR: silicon-wafer revenue and customers."
    Confirms EN Mordor Intelligence Published Jan 1, 2025: "Top-five 300mm oligopoly; GlobalWafers ~15%."
    Confirms KO THE ELEC Published Jun 1, 2024: "Supplies wafers to TSMC, UMC, Samsung."

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