{"rewrite":{"id":"r_aed962ea9a978062b955c9e8","clusterId":"c_1867a9f9b30219c02ed58005","slug":"sk-hynix-passes-samsung-as-south-korea-s-most-valuable-company","model":"deepseek-v4-flash","headline":"SK Hynix Passes Samsung as South Korea's Most Valuable Company","summary":"SK hynix surpassed Samsung Electronics in market capitalization on June 22, 2026, ending Samsung's 25-year run as South Korea's top company. SK hynix's stock rose 5.6% to a market cap of 2,080 trillion won, while Samsung fell 0.1% to 2,067 trillion won. The shift is driven by AI memory chip demand and SK hynix's lead in high-bandwidth memory (HBM) supply for NVIDIA.","whyItMatters":"The market cap flip reflects how AI chip demand has reshaped South Korea's corporate hierarchy, with SK hynix's HBM focus outpacing Samsung's broader portfolio.","webCardHtml":"\u003cp\u003eSK hynix ended Samsung\u0026#39;s 25-year hold on the top spot in South Korea\u0026#39;s stock market on June 22, 2026. The memory chip maker\u0026#39;s market capitalization hit 2,080 trillion won, about 219 trillion yen, after a 5.6% daily gain. Samsung\u0026#39;s market cap fell to 2,067 trillion won. The Korea Composite Stock Price Index closed at a record high, up 0.7% on the day.\u003c/p\u003e\u003cp\u003eSK hynix\u0026#39;s rise is tied directly to AI demand. Training large language models requires NVIDIA GPUs paired with high-bandwidth memory, and SK hynix is a major HBM supplier. The company began mass production of next-generation memory for NVIDIA\u0026#39;s Vera Rubin platform in April 2026 and announced a technology partnership with NVIDIA in June 2026. Investor expectations of a US stock listing, filed confidentially in March 2026, also supported the stock.\u003c/p\u003e\u003cp\u003eSamsung develops HBM as well but has lagged. The Korea JoongAng Daily noted that Samsung\u0026#39;s diversified business-smartphones, home appliances, and semiconductors-may have diluted the semiconductor boom\u0026#39;s impact on its stock price. SK hynix plans to double memory chip production capacity over five years and is building an advanced packaging plant in Cheongju.\u003c/p\u003e","blueskyPost":"SK Hynix ended Samsung's 25-year market cap lead on AI memory demand alone. The gap is narrow, but the driver is structural: HBM supply for NVIDIA, not broad semiconductor strength.","twitterPost":"SK Hynix ended Samsung's 25-year market cap lead on AI HBM demand. The gap is narrow; the driver is structural.","threadsPost":"SK Hynix ended Samsung's 25-year run as South Korea's most valuable company, driven by AI memory demand. The gap is narrow, but the driver is structural: HBM supply for NVIDIA, not broad chip strength. Samsung's legacy lead was broad; SK Hynix's is single-product.","newsletterBlurb":"SK hynix overtook Samsung Electronics in market capitalization on June 22, ending Samsung's 25-year run as South Korea's most valuable company. The shift is driven by AI memory chip demand and SK hynix's lead in high-bandwidth memory supply for NVIDIA.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20260623-sk-hynix-most-valuable-company/\",\"title\":\"SK hynix surpasses Samsung to become South Korea's most valuable company, with reports of a possible US stock market listing soon\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4313,"outputTokens":703,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1782188195,"createdAt":"2026-06-23T04:08:05.000Z","publishedAt":"2026-06-23T04:10:24.000Z","updatedAt":"2026-06-23T04:10:24.000Z"},"cluster":{"id":"c_1867a9f9b30219c02ed58005","canonicalTitle":"SK hynixがSamsungを抜き韓国で最も価値の高い企業に、「間もなく米国株式市場に上場」との情報も","representativeArticleId":"a_5d967a9fdaa82c4c2a3ef54e","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[],\"studios\":[],\"people\":[],\"type\":\"business\",\"domain\":\"industry\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-06-23T03:15:00.000Z","lastSeenAt":"2026-06-23T03:15:00.000Z","updatedAt":"2026-06-23T04:10:26.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20260623-sk-hynix-most-valuable-company/","title":"SK hynixがSamsungを抜き韓国で最も価値の高い企業に、「間もなく米国株式市場に上場」との情報も"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":[],"studios":[],"people":[],"type":"business","domain":"industry","is_roundup":false},"keyFacts":["SK hynix surpassed Samsung Electronics in market capitalization on June 22, 2026, ending Samsung's 25-year run as South Korea's most valuable company.","SK hynix's market cap reached 2,080 trillion won after a 5.6% daily gain, while Samsung's fell to 2,067 trillion won.","SK hynix began mass production of next-generation memory for NVIDIA's Vera Rubin platform in April 2026 and announced a technology partnership with NVIDIA in June 2026.","SK hynix filed confidentially for a US stock listing in March 2026, which also supported its stock price.","SK hynix plans to double memory chip production capacity over five years and is building an advanced packaging plant in Cheongju."]}