Source: Sisa Journal · 경제

What happened

According to Sisa Journal, momentum in semiconductors and large-cap leaders has cooled, and money is shifting into previously overlooked sectors. Steel, biotech, and materials names are rebounding, and traders are debating whether this is healthy sector rotation or a short gap rally while chip leaders rest.

Korea Exchange and Koscom ETF CHECK data as of August 10 show that over the prior month the KRX Steel Index posted the largest gain among domestic theme indices, rising about 19 percent. The KRX 300 Healthcare index climbed 13 percent, and the KRX 300 Materials index added 12 percent.

The breakdown

Equity ETFs mirror the shift. Over one month, TIGER BioTOP10 gained 20.19 percent, PLUS Solar & ESS rose 15.17 percent, and TIGER Kosdaq150 Biotech added 14.74 percent. This year’s chip winners reversed: SOL AI Semiconductor TOP2 Plus fell 27.46 percent, KODEX AI Semiconductor TOP2 Plus dropped 26.9 percent, and TIGER Semiconductor TOP10 lost 26.51 percent.

Sisa Journal ties the move to tighter single-stock leveraged ETF rules and wider semiconductor volatility, which cooled enthusiasm for Samsung Electronics and SK hynix. Daishin Securities data cited in the piece shows their combined market-cap weight fell month-on-month for the first time this year — 53.2 percent at end-July versus 51.16 percent on August 1.

FnGuide data as of August 6 showed 91 of 157 reporting companies (58 percent) beat broker operating-profit forecasts, including non-semiconductor names. On August 10, Kosdaq also triggered its third buy-side sidecar of the month.

Analysts split on durability. Lee Kyung-min at Daishin said rotation is “becoming clear” and undervalued laggards could keep rising once chip volatility settles. Jo Jun-gi at SK Securities warned rotation may not fully offset index drag from semiconductor weakness. Kim Min-gyu at KB Securities called the move catch-up revaluation while leaders rest, not broad diffusion — a true trend turn needs rate stability and a fresh narrative.

Why it matters outside Korea

Anyone holding Korea ETFs, ADRs, or a local sleeve weighted to Samsung and SK hynix should treat August as a composition shift, not just a chip pullback. When two stocks move from 53.2% to 51.16% of domestic market cap in weeks, index trackers and “Korea tech” baskets behave differently even if the headline KOSPI looks stable.

Global investors who rode the AI-semiconductor narrative into Korea now face a tape where bio, solar-linked, and materials ETFs print double-digit monthly gains while semiconductor leverage products are down 20%+ — a divergence that affects sector hedges and how you read “Korea exposure” on a statement.

What travelers and expats should watch

• Check concentration, not just the index level: a bio or steel bounce does not mean your chip-heavy account matches “the market” — rebalance assumptions from the May–July semiconductor-heavy regime.
• Leveraged-ETF rules still bind: Sisa Journal links the rotation partly to single-stock leverage curbs and chip volatility; a materials rally does not reopen old semiconductor leverage access or cash-deposit gates.
• Kosdaq sidecars signal retail heat: three buy-side sidecars in one month is a microstructure flag — expect wider spreads and faster halts in mid/small names if you trade through a local broker.
• No buy/sell call here: sector-rotation brief, not personalized investment advice.

Context

Read this as chip-led concentration easing with laggards catching up, not as proof Korea’s market has permanently handed leadership to steel and bio. Sisa Journal’s operative stack is steel +19% / healthcare +13% / materials +12% versus semiconductor ETFs −26% to −27%, with Samsung-plus-SK weight at 51.16% from 53.2%. Analyst quotes in the piece lean skeptical that rotation alone can carry the whole index if chips rebound.

Source

Sisa Journal: 반도체 식자 소외주가 뛴다…증시 순환매인가, 틈새 반등인가 — paraphrased for briefing; analyst views attributed to named researchers; read the original for full detail. Not investment advice.