{"slug": "sk-hynix-chairman-chey-tae-won-bought-stock-just-under-the-disclosure-radar-to-a", "title": "SK Hynix chairman Chey Tae-won bought stock just under the disclosure radar to stop a panic", "summary": "SK Hynix reported a record second-quarter operating profit of 60.54 trillion won, up 557% year-over-year, with revenue of 79.32 trillion won and an operating margin of about 76%, yet its stock sold off because the results missed consensus estimates of 84.1 trillion won in sales and 64.1 trillion won in operating profit. The stock later rebounded sharply, with the KOSPI jumping 18% on July 31, its largest single-day gain on record, and SK Hynix rising about 29-30% to hit its daily limit. The article also notes that a claim that SK Group Chairman Chey Tae-won bought 3,620 SK Hynix shares on July 30 for 4.79 billion won could not be confirmed, though Chey had publicly stated on July 17 that he expected the stock to trend upward long-term.", "body_md": "*SK Hynix did not need a miracle insider purchase to explain this week's violent rebound. The real story is simpler: investors priced the memory boom for perfection, then punished a record quarter for being only slightly less than they wanted.*\n\nThe number that matters most here is 60.54 trillion won. That was SK Hynix's second-quarter operating profit, up 557% from a year earlier, according to figures reported by multiple outlets after the company released earnings on July 29. Revenue reached 79.32 trillion won. The operating margin was about 76%.\n\nIt was not enough.\n\nThat tells you almost everything about the AI memory trade right now. SK Hynix is one of the companies sitting closest to the real bottleneck in artificial intelligence hardware, high-bandwidth memory for accelerators. It supplies Nvidia. It has outrun Samsung in the HBM race. It just delivered the kind of quarter that, in a normal market, would have been treated as a victory lap.\n\nInstead, the stock sold off because expectations had moved faster than the business. Yonhap reported before the results that a consensus estimate from 14 local brokerages had pointed to about 84.1 trillion won in sales and 64.1 trillion won in operating profit. SK Hynix missed both numbers. Not by much, but enough. When a stock has already been treated as the cleanest way to buy the AI infrastructure boom, a small miss can do the damage of a large one.\n\n## A record quarter still missed the tape\n\nThe selloff did not happen in a quiet market. South Korean chip shares had already been swinging hard after a huge first-half run. Business Insider reported that SK Hynix had fallen 56% from its June high during the broader rout, while Samsung had also been dragged lower. The KOSPI was hit by forced selling, worries over geared single-stock ETFs, and anxiety that China's memory-chip push could eventually pressure Korean margins.\n\nThen came the snapback. On July 31, the KOSPI jumped about 18%, its largest single-day gain on record, according to the Wall Street Journal and MarketWatch. SK Hynix rose roughly 29% to 30%, hitting its daily limit, while Samsung Electronics gained about 26% to 27%. That is not a normal relief rally. It is what happens when investors who have been forced out decide they may have sold the wrong thing.\n\nThe overseas backdrop helped. Microsoft, Amazon and Meta had all given investors fresh evidence that AI spending was still running hard, and that matters more to memory makers than another neat quarterly comparison. If cloud companies keep spending on computing capacity, memory does not become a side story. It stays near the center of the bill.\n\nStill, you should be careful with the cleaner version of this story. A stock can rebound because fundamentals are strong. It can also rebound because positioning was stretched, short-term sellers were exhausted, and traders suddenly had a reason to chase. Both can be true in the same hour.\n\n## The Chey claim needed cutting\n\nThe published draft leaned heavily on a claim that SK Group Chairman Chey Tae-won bought 3,620 SK Hynix shares on July 30 for 4.79 billion won, just below South Korea's 5 billion won pre-disclosure threshold. That would be a very important fact if confirmed. I could not confirm it through live search.\n\nThe threshold itself is real. The Korea Times reported in 2024 that South Korea's revised rules require executives and major shareholders to disclose planned trades of more than 5 billion won, or 1% or more of issued shares, at least 30 days in advance. But a real rule does not prove a real transaction. You don't get to build a story around a purchase that cannot be found in a filing, a reliable news report, or a searchable public record.\n\nChey has made public comments on SK Hynix shares. Yonhap reported on July 17 that he said the stock was likely to trend upward over the long term because memory chips would continue to be needed. That is a confirmed statement. It is not the same thing as an open-market purchase during a panic.\n\nFrankly, that distinction is the whole job here. The verified story is already strong: SK Hynix posted a record quarter, missed inflated estimates, helped trigger a brutal selloff, then led a historic KOSPI rebound when AI spending fears eased. That is plenty. Adding an unconfirmed chairman trade does not sharpen the piece. It turns a volatile market story into a sourcing problem.\n\nFor investors, the harder question remains unchanged. SK Hynix is making extraordinary money from the AI memory cycle, but the share price is no longer judged against ordinary earnings power. It is judged against the market's appetite for a perfect AI boom, quarter after quarter. That bar is high. This week showed how quickly it can move.\n\n**Also read:** [Samsung's memory warning sent Micron stock surging 18% and left the bear case in ruins](https://startupfortune.com/samsungs-memory-warning-sent-micron-stock-surging-18-and-left-the-bear-case-in-ruins/) • [X Money goes live with 6% yield and a Visa card and PayPal has reason to be nervous](https://startupfortune.com/x-money-goes-live-with-6-yield-and-a-visa-card-and-paypal-has-reason-to-be-nervous/) • [Musk calls WSJ Tesla China spinoff report absurdly fake news but the stock already moved](https://startupfortune.com/musk-calls-wsj-tesla-china-spinoff-report-absurdly-fake-news-but-the-stock-already-moved/)", "url": "https://wpnews.pro/news/sk-hynix-chairman-chey-tae-won-bought-stock-just-under-the-disclosure-radar-to-a", "canonical_source": "https://startupfortune.com/sk-hynix-chairman-chey-tae-won-bought-stock-just-under-the-disclosure-radar-to-stop-a-panic/", "published_at": "2026-07-31 23:20:50+00:00", "updated_at": "2026-07-31 23:54:39.149236+00:00", "lang": "en", "topics": ["artificial-intelligence", "ai-infrastructure", "ai-chips"], "entities": ["SK Hynix", "Chey Tae-won", "Nvidia", "Samsung Electronics", "KOSPI", "Microsoft", "Amazon", "Meta"], "alternates": {"html": "https://wpnews.pro/news/sk-hynix-chairman-chey-tae-won-bought-stock-just-under-the-disclosure-radar-to-a", "markdown": "https://wpnews.pro/news/sk-hynix-chairman-chey-tae-won-bought-stock-just-under-the-disclosure-radar-to-a.md", "text": "https://wpnews.pro/news/sk-hynix-chairman-chey-tae-won-bought-stock-just-under-the-disclosure-radar-to-a.txt", "jsonld": "https://wpnews.pro/news/sk-hynix-chairman-chey-tae-won-bought-stock-just-under-the-disclosure-radar-to-a.jsonld"}}