Retail Investors Supercharge SK Hynix Rally as Analysts Pivot to a New Valuation Regime

New single-stock leveraged ETFs drive SK Hynix to record highs; Mirae lifts target by 85% as AI memory demand fuels rally, but concentration risk grows.

A wave of new single-stock leveraged ETFs has thrown fuel on SK Hynix’s already blistering rally, giving retail traders a direct — and highly volatile — channel to bet on the AI memory boom. On May 27, 16 leveraged and inverse ETFs tracking Samsung Electronics and SK Hynix began trading in Seoul, posting a combined first-day volume of roughly 10.4 trillion Won. The heaviest demand landed squarely on the Hynix names: the KODEX SK Hynix Single Stock Leverage ETF, run by Samsung Asset Management, notched 4.39 trillion Won in turnover and surged 18.44 percent, while Mirae Asset’s TIGER SK Hynix Single Stock Leverage ETF saw 2.07 trillion Won in volume and gained 18.56 percent.

That same day Mirae Asset Securities, the group behind the TIGER fund, raised its price target on the underlying stock from 3.2 million Won to 3.8 million Won. Analyst Kim Young-gun justified the move not by bumping up earnings forecasts, but by re-rating the valuation multiple. Mirae lifted the target price-to-book ratio from 5.3 to 6.2, reflecting an expected average return on equity of 66 percent between 2026 and 2028 — a stark jump from the 10-year average of 19 percent. Higher memory prices and a growing share of long-term supply contracts underpin that optimism. The revised target, based on a 12-month book value per share of 617,915 Won, implied a potential upside of more than 85 percent from the stock’s level before the May 27 report.

SK Hynix closed that day at 2,243,000 Won, up 9.31 percent, while the broader KOSPI index climbed 2.25 percent to 8,228.70 points, briefly touching an intraday record of 8,450.26. But beneath the headline index strength, the market looked decidedly fragile: only 77 stocks rose on the day, while 826 fell. The rally was almost entirely a semiconductor and AI affair, and the influx of ETF money has only tightened that concentration. Samsung Electronics and SK Hynix together now account for 50.4 percent of the KOSPI’s total market capitalisation — an all-time high that leaves the entire index vulnerable to a pullback in memory demand.

The move has been relentless. As of the latest session, SK Hynix shares trade at 2,289,000 Won, extending gains to 2.05 percent on the day and marking a new 52-week high. The stock has more than tripled this year, delivering a 238 percent advance. Yet the relative strength index sits at 68.9 — elevated but still shy of the 70 threshold that traditionally signals overbought conditions.

The fundamental case for that stretch remains anchored in a blockbuster first quarter. SK Hynix posted revenue of 52.6 trillion Won and operating profit of 37.6 trillion Won, driving an operating margin of 72 percent. Revenue surged 198 percent year-over-year as demand for high-bandwidth memory (HBM), server DRAM modules, and enterprise SSDs continued to outstrip production capacity. The balance sheet also looks robust: net cash stands at 35 trillion Won against total cash holdings of 54.3 trillion Won. Meanwhile, the company is chipping away at a convertible bond — the remaining 100.8 million U.S. dollars of a 1.7 billion dollar issue will be repaid by May 28, 2026. That is neither a catalyst nor a concern, but it does clear the decks for further investment.

And investment is precisely what SK Hynix plans to ramp. The company has flagged significantly higher capital expenditure this year, earmarked for the ramp-up of the M15X fabrication plant, the buildout of the Yongin cluster, and the procurement of EUV lithography tools. The next big test for the stock will be whether HBM delivery volumes can scale as planned in the second half of the year — a condition that Mirae’s 3.8 million Won target implicitly relies on.

For now, the combination of ETF-driven retail demand and a structural re-rating of profitability has created a self-reinforcing cycle. The bull case has shifted from a strong next quarter to a multi-year horizon of sustainably higher returns. But the more concentrated the rally becomes, the sharper any reversal will cut.