KOSPI Forecast May 26, 2026: Brent crude plunged 8.62% to $94.62 and WTI dropped (Nasdaq +0.19%, S&P +0.37%)
Hey, Dongchun here.
KOSPI and KOSDAQ open on May 26, 2026 after US markets closed with Nasdaq +0.19% and S&P 500 +0.37%. Here is the Korean stock market preview for foreign investors.
The only thing that matters today is the oil collapse — Brent down 8.62% in a single session is the largest one-day move of the year and is already pulling US 30-year yields down 0.94%. This is a textbook disinflation shock if it holds, which is why semiconductor multiples got a re-rating (SOX +1.99%) and Russell 2000 outperformed Nasdaq for once. Watch whether tomorrow's news flow confirms the Hormuz reopening or walks it back — that one signal sets the direction for global risk assets through June.
Previous post: Read it →
1. US Market Close: Impact on Korean Stocks
US stocks closed broadly higher on Tuesday's return from the Memorial Day holiday, with the S&P 500 up 0.37% to 7,473.47, the Nasdaq up 0.19% to 26,343.97, the Dow up 0.58% to 50,579.70, and the Russell 2000 up 0.91% to 2,869.23. Small caps outperforming mega caps on a risk-on day is the breadth signal that matters here.
The single biggest catalyst was the collapse in oil prices on diplomatic progress reports. Brent crude tumbled 8.62% and WTI fell 5.85% on reports that the US and Iran are close to a deal that would reopen the Strait of Hormuz, a chokepoint carrying roughly one-fifth of global oil and LNG shipments.
Market breadth was strong with Russell 2000 (+0.91%) leading and VIX falling to 16.59 (-0.66%), well inside the calm zone. The semiconductor sector (SOX +1.99%) led on lower rates, while energy was the only major sector under pressure.
For Korea, this is a clear positive for cost-sensitive sectors — airlines, shipping, chemicals — while refiners face mixed signals from compressed crack spreads. Lower US long-end yields (10Y -0.61%, 30Y -0.94%) also support growth stocks and KOSDAQ multiples.
| Index | Close | Change |
|---|---|---|
| S&P 500 | 7,473.47 | +0.37% |
| Nasdaq | 26,343.97 | +0.19% |
| Dow Jones | 50,579.70 | +0.58% |
| Russell 2000 | 2,869.23 | +0.91% |
2. KOSPI and KOSDAQ Today: Korean Market Opening Outlook
KOSPI closed at 7,847.71 (+0.41%) and KOSDAQ at 1,161.13 (+4.99%) in the most recent Korean session. KOSDAQ's nearly 5% single-day move was driven entirely by biotech ahead of the ASCO 2026 conference, while KOSPI consolidated after the prior session's +8.42% surge.
Large-cap semis took a breather: Samsung Electronics fell 2.34% to 292,500 KRW while SK Hynix was flat at +0.05%. Profit-taking in the semi heavyweights coexisted with strong buying in biotech and internet platforms (NAVER +1.75%).
The combined pattern suggests a sector rotation within an intact risk-on regime — capital moved from semis into KOSDAQ biotech and large-cap internet, not out of Korea. Whether oil's collapse pulls fresh foreign money into airline/shipping names in the next session is the key tell.
| Index | Prev Close | Change | Key Level |
|---|---|---|---|
| KOSPI | 7,847.71 | +0.41% | 7,900 resistance |
| KOSDAQ | 1,161.13 | +4.99% | 1,180 next target |
| Investor | KOSPI Net | KOSDAQ Net | Trend |
|---|---|---|---|
| Foreigners | semis net sell | biotech net buy | rotating |
| Institutions | mixed | biotech net buy | aligned with foreigners |
| Retail | net buy autos | net sell biotech | counter-trend |
3. Korean Sector Breakdown: What is Moving Today
The dominant theme of the US session was a disinflation pulse from collapsing oil prices, which drove rates lower and lifted rate-sensitive semis and small caps simultaneously.
Top Korean sector to watch: airline/shipping. With Brent down 8.62%, fuel costs ease materially for Korean Air (003490) and HMM (011200). Chemicals (LG Chem 051910, Lotte Chemical 011170) also benefit from cheaper naphtha feedstock.
Top Korean sector at risk: refiners. SK Innovation (096770) and S-Oil (010950) face crack spread compression and inventory valuation losses when crude drops this fast, even though end-product demand may improve over time.
| Sector | US Session | Korea Stock | Korea Move | Watch |
|---|---|---|---|---|
| Semiconductors | SOX +1.99% | Samsung (005930), SK Hynix (000660) | -2.34% / +0.05% | KODEX Semiconductor |
| Airlines | ▲ Oil -8% | Korean Air (003490) | watch open | Fuel cost relief |
| Chemicals | ▲ Oil -8% | LG Chem (051910) | watch open | Naphtha input drop |
| Refiners | ▼ Oil -8% | S-Oil (010950) | watch open | Crack spread risk |
4. Korean Stocks on My Radar
| Ticker | Price | Session % | Key Event |
|---|---|---|---|
| BMNR | $18.88 | -3.72% | ETH treasury profit-taking despite 5.21M ETH holdings |
| SMCI | $35.58 | +6.34% | Q3 FY26 margin recovery re-rated, lawsuit deadline passed |
| ASTS | $105.86 | +10.01% | Carrier JV signal + Roth target raised to $108 |
| POET | $14.59 | -1.55% | Profit-taking after Lumilens deal and $400M raise |
| RBLX | $48.16 | +4.38% | $3B buyback support overcomes Q1 guidance cut |
ASTS surged on reports that AT&T, Verizon, and T-Mobile may form a satellite-direct-to-cell joint venture, while Roth Capital raised its target to $108 citing the company's $3.5B cash position funding 100+ satellites and over $1.2B in contracted revenue.
SMCI extended its post-earnings rally as the gross margin beat (nearly 50% above consensus) from the May 5 Q3 report continues to be re-rated, with the May 26 class action lead plaintiff deadline now in the rearview.
RBLX held up despite a Q1 revenue miss ($1.44B vs $1.74B estimate) and an 11% full-year bookings guidance cut, supported by the announcement of its first-ever $3B share buyback program.
POET cooled after a 72% one-month rally driven by the May 14 Lumilens optical engine deal and a follow-on $400M direct offering, with management guiding to 30,000+ optical engine shipments in 2026.
BMNR pulled back on ETH price sensitivity despite confirming its position as the world's largest Ethereum treasury with 5.21M ETH and $13.4B in total crypto and cash holdings.
5. How to Trade KOSPI Today: Setup and Levels
KOSPI is likely to open with a gap-up of 0.5–1.0% based on overnight futures (Nasdaq futures +1.04%, S&P futures +0.73%) and the disinflation pulse from collapsing oil. The primary driver is the macro tailwind of lower US long-end yields combined with cheaper crude.
The single most important indicator to watch is foreign net flow in Samsung Electronics (005930) between 9:00–9:05 AM KST. Samsung represents the largest single weighting in KOSPI and foreign flow into Samsung at the open typically dictates the day's index direction within the first hour.
Two sectors deserve focus today. First, airlines and shipping (Korean Air 003490, HMM 011200) where the oil collapse directly compresses fuel costs. Second, semiconductors (Samsung 005930, SK Hynix 000660) where US rate relief supports a multiple re-rating, contingent on foreign buying returning to the names.
| Scenario | Trigger Condition | KOSPI Target |
|---|---|---|
| Bull | Foreign net buy in Samsung > +200B KRW + oil stays below $91 | Tests 7,900 |
| Neutral | Foreign mixed flow + USD/KRW 1,515–1,520 range | 7,800–7,900 box |
| Bear | Foreign net sell > 500B KRW + oil rebounds above $95 | 7,750 support test |
Base case is a gap-up open followed by volatility as the market tests whether oil's collapse holds. International readers without KRX access can track exposure via EWY (iShares MSCI South Korea ETF) and Samsung GDR for the largest single Korean weighting.
A one-day oil shock of this size is rare. Whether it becomes a sustained disinflation trade or a one-session headline is the only question that matters this week.
So — which way does Korea swing at the open today?
That's the AM breakdown for May 26, 2026. Trade safe.
Comments
Post a Comment