Leveraged ETF Distortion Aside, SK Hynix ADR News Fuels 4% KOSPI Rally

The KOSPI extended intraday gains to approach the 7,600 level, closing near 7,671 points, up nearly 5% from the previous session, while the KOSDAQ rose about 6% to pass 844 points. The won stabilized around 1,506 per dollar. Foreign investors were net sellers of KOSPI and KOSDAQ cash equities but net buyers in futures, while institutions bought across both markets.

However, the day's top names by trading value were again dominated by single-stock leveraged and inverse ETFs and SK Hynix futures-linked products, echoing the prior day's pattern when inverse and double-inverse products ranked first and second. Analysts noted the distortion: despite abundant positive semiconductor and AI ecosystem news plus SK Hynix listing optimism, the index gave back intraday gains before barely recovering.

The rally was broad, with virtually no decliners among the top 50-100 KOSPI names by market cap; Samsung Electronics rose 5-6% and SK Hynix gained about 2%, while nearly all large-cap KOSDAQ names except HLB and Peptron advanced. Still, the market's direction proved unstable, with more than 800 KOSPI-listed names higher at one point in the morning before a herd-like buy-the-buyers, sell-the-sellers mechanism reasserted itself in the afternoon.

Hosts described the current environment as a volatility regime in which a 4-5% daily KOSPI gain can still be followed by a roughly 3% pullback, calling it the new normal, with one host suggesting investors should recalibrate their sense of a 'flat' day to include swings of around minus 10%. Even so, the KOSPI's technical support around the 7,000 level was viewed as a positive sign.

U.S. stocks closed higher overnight, with the Nasdaq up about 1.3%, the S&P 500 up about 0.8%, and the Russell 2000 up about 1.3%. The Philadelphia Semiconductor Index surged roughly 3%, driving the broader advance.

After an early wobble, buying concentrated in semiconductors pushed indices higher through the session. Notably, flows broadened beyond chips to AI-adjacent names such as Meta, Tesla and SpaceX, after weeks of concern over excessive concentration in semiconductor stocks.

The 10-year Treasury yield pulled back from a recent high, and the dollar index weakened. Gold rose about 1.3% and bitcoin gained about 1.9%, with most major asset classes trading favorably alongside equities.

It later emerged that roughly $7.1 billion flowed into semiconductor-focused ETFs on Tuesday — the largest single-day inflow since the funds launched in 2001 — a flow pattern cited as one driver behind the rebound.