SK Hynix Overtook Samsung for a Day — Here's What It Means for Korea's Biggest Dividends

For one trading day in June 2026, the most valuable listed company in Korea was not Samsung Electronics. It was SK Hynix — a milestone that lasted less than 24 hours before Samsung reclaimed its place, but one that captures how far the AI-chip boom has reshuffled Korea’s corporate order. The back-and-forth also puts a spotlight on something more durable than a single day’s stock price: what each of Korea’s largest companies currently pays the shareholders who hold them.

SK Hynix Briefly Overtakes Samsung

On June 22, 2026, SK Hynix overtook Samsung Electronics in common-share market capitalization for the first time in roughly 25 years and seven months, becoming South Korea’s most valuable listed company. The crossover ended a Samsung reign that had held since November 21, 2000 — one of the longest unbroken runs at the top of the KOSPI, Korea’s main stock index.

The swing came down to a single day’s diverging prices. SK Hynix shares closed up 5.61% at about 2.92 million won, while Samsung Electronics slipped 0.14% to roughly 353,500 won. On a common-share basis, Korea Exchange data put SK Hynix’s market capitalization at about 2,080.4 trillion won against Samsung’s approximately 2,066.7 trillion won — a gap of well under 1%, but enough to flip the ranking.

The HBM Boom Behind the Surge

The surge behind SK Hynix’s rise wasn’t a one-day event. Its shares had already gained 341.9% year-to-date as of June 22, 2026, propelled by its position as the leading supplier of high-bandwidth memory (HBM) — the specialized memory chips that sit inside the AI accelerators built by customers including Nvidia. As global demand for AI computing hardware has climbed, HBM has gone from a niche memory product to one of the most sought-after components in the chip industry, and SK Hynix’s early lead in it has been the single biggest driver of its valuation.

Analysis: for a global reader, the more interesting story isn’t which company held the title for a day — it’s what the swap says about how completely the AI buildout has reordered Korea’s corporate hierarchy. A memory-chip maker that spent decades in Samsung’s shadow spent a day as the country’s most valuable company on the strength of a single product category. That’s now the lens investors are using to read both companies’ dividend decisions, discussed below.

Samsung’s Preferred-Share Rebuttal

Samsung Electronics publicly pushed back on the ‘overtaken’ framing. Korean-listed companies can issue both common shares (which carry voting rights) and preferred shares (which typically pay a slightly higher dividend but no vote); most market-cap comparisons, including the one that produced the June 22 crossover, count only common shares. Samsung argued that a fair comparison should include its preferred shares too. On that combined basis, using the same Korea Exchange closing data, Samsung’s total market capitalization came to about 2,246.4 trillion won — roughly 2,066.7 trillion won in common shares plus 179.7 trillion won in preferred shares — comfortably ahead of SK Hynix’s roughly 2,080.4 trillion won single-class figure.

The dispute is less about who is ‘really’ larger and more about a structural difference between the two companies: Samsung has a substantial preferred-share class outstanding; SK Hynix does not. Whichever measure a reader prefers, the two figures sat close enough on June 22 that either framing was defensible.

The Next-Day Selloff

Whatever the record was going to say, it didn’t stand for long. On June 23, 2026 — the very next trading day — Samsung reclaimed the common-share market-cap lead after both stocks fell sharply in a broad tech-sector selloff: SK Hynix dropped about 12.5% and Samsung about 12.3%. The KOSPI index itself fell 9.99% on the day, severe enough to trigger a circuit breaker, the exchange-wide trading halt Korea uses to slow extreme single-day moves.

SK Hynix’s day at the top, in other words, was bookended by two of the most volatile trading sessions Korea’s chip stocks had seen in some time — a reminder that a market-cap crossover driven by a single day’s price move can be undone just as quickly.

Samsung Electronics’ Quarterly Dividend

Away from the stock-price drama, Samsung’s shareholder payouts have continued on their usual quarterly schedule. For the first quarter of 2026, Samsung paid a cash dividend of 372 won per share on both common and preferred stock, with a record date of March 31, 2026 and a payment date of May 29, 2026. The total payout came to about 2.45 trillion won.

SK Hynix Raises Its Payout

SK Hynix, meanwhile, has been increasing what it pays shareholders. Under its shareholder-return policy for fiscal years 2025 through 2027, the company raised its fixed annual dividend to 1,500 won per share, up from 1,200 won, paid out in four equal quarterly installments. The first-quarter 2026 payment came to 375 won per share — one-quarter of the new annual total.

The increase sits alongside the stock’s dramatic 2026 run-up: a company whose share price has more than quadrupled year-to-date is also paying out more per share than it used to, even if the dividend increase itself is modest next to the stock’s gains.

Hyundai Motor’s Dividend Streak

Outside the memory-chip rivalry, Hyundai Motor offers a steadier contrast. The automaker has paid a consistent quarterly cash dividend of 2,500 won per common share since 2025, and it has continued that same payment through its 2026 quarterly distributions. Unlike Samsung’s and SK Hynix’s payouts, which move with restated multi-year policies, Hyundai’s dividend has simply stayed flat — a different kind of shareholder-return story from the one playing out in Korea’s chip sector, and one worth knowing about if only for the comparison.