US April CPI printed +3.8% YoY against +3.7% consensus | Nasdaq -0.71%, S&P -0.16% — Korea Open Preview 26/05/13

Hey, Dongchun here.

DONGCHUN'S TAKE

The only thing that matters today is the +3.8% headline CPI print. It triggered a 1.20% jump in 10-year yields, a -3.01% SOX day and a $102 WTI on the same tape — inflation, oil and rates have aligned against high-multiple US tech in one session. Watch Nasdaq futures below -1% and WTI above $102 as the twin tells for whether Korea's rebound holds tomorrow.

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1. US Session Recap

The S&P 500 closed -0.16% at 7,400.96, the Nasdaq -0.71% at 26,088.20, the Dow +0.11% at 49,760.56, and the Russell 2000 -0.97% at 2,842.83. The split tape — Dow up, small caps and tech down — reads as classic stagflationary rotation after a CPI shock at near-record index levels.

The catalyst was the April CPI report. Headline inflation accelerated to +3.8% year-on-year (above the +3.7% consensus and the prior +3.3%), the highest reading since May 2023, with energy contributing more than 40% of the gain on a 28.4% YoY gasoline jump. Core CPI ran at +2.8%, also above expectations.

Breadth was poor but not panic. The SOX semiconductor index fell -3.01% as profit-taking hit a sector up roughly 65% year-to-date, while VIX actually fell -2.12% to 17.99 — hedges were not chased, suggesting orderly de-grossing rather than forced liquidation.

For Korea, the direct read-through is mixed. SOX -3.01% is a headwind for Samsung Electronics (005930) and SK Hynix (000660), while WTI at $102 supports SK Innovation refiners and pressures airlines and petrochemicals on input cost.

IndexCloseChange
S&P 5007,400.96-0.16%
Nasdaq26,088.20-0.71%
Dow Jones49,760.56+0.11%
Russell 20002,842.83-0.97%

2. Korea Market Snapshot

KOSPI closed at 7,822.24 (+4.32%, +324.24pt) while KOSDAQ ended -0.03% at 1,207.34. The headline index move is sharp but the breadth divergence — large caps mixed, KOSDAQ flat — argues the rally is concentrated rather than broad.

Foreign investor flow numbers were not in the prefetched dataset, so the precise net buy/sell tape for the session is not confirmed in this writeup. What is clear from the stock-level prints is that Samsung Electronics (005930) finished -2.28%, SK Hynix (000660) -2.39%, LG Energy Solution (373220) -5.34% and NAVER (035420) -3.55% — the largest names lagged the index.

That divergence implies the KOSPI move was driven by mid-cap or sector-specific flows rather than across-the-board foreign buying of the megacaps. The next session is the tell: if foreign buying rotates back into Samsung and SK Hynix, the rebound becomes credible; if not, today reads as a thin-tape squeeze.

IndexPrev CloseChangeKey Level
KOSPI7,822.24+4.32%7,650 support / 8,000 resistance
KOSDAQ1,207.34-0.03%1,200 support
InvestorKOSPI NetKOSDAQ NetTrend
Foreignersnot in datasetnot in datasetrequires confirmation next session
Institutionsnot in datasetnot in datasetrequires confirmation next session
Retailnot in datasetnot in datasetrequires confirmation next session

3. Korea Sector Breakdown

The dominant theme overnight was the US CPI shock — a single inflation print drove semiconductors -3.01% (SOX), 10-year Treasury yields +1.20%, WTI +4.06% and Fed rate-cut odds for 2026 lower. High-multiple tech bore the brunt while energy and defensives held up.

In Korea, autos and refiners screen relatively well. Hyundai Motor (005380) closed flat at 0.00% as USD/KRW at 1,474 (+0.95%) continues to support export-earnings translation. SK Innovation reports today and is expected to flag a Q1 operating profit step-up to roughly KRW 1.6 trillion on refining-margin tailwinds with WTI above $100.

The pressure zone is batteries and internet. LG Energy Solution (373220) closed -5.34% and NAVER (035420) -3.55% — high-multiple growth segments that compress most directly when the US 10-year yield jumps and the Fed cut path repricing extends.

SectorUS SessionKorea StockKorea MoveWatch
Semiconductors▼ SOX -3.01%Samsung (005930), SK Hynix (000660)-2.28% / -2.39%KODEX Semiconductor
Refining▲ WTI +4.06%SK Innovation (096770)earnings todayrefining-margin print
Batteries▼ WeakLG Energy (373220)-5.34%TIGER 2차전지
Internet▼ WeakNAVER (035420), Kakao (035720)-3.55% / -2.57%platform multiples
Autos◼ FlatHyundai (005380)0.00%weak KRW tailwind

4. Stocks on My Radar

TickerPriceSession %Key Event
BMNR$21.67-5.86%ETH holdings hit 5.21M ($12.3B) but crypto risk-off dominated
NVO$47.00+1.29%Wegovy 7.2mg high-dose data: -27.7% body weight at 72 weeks
ZETA$16.25-1.57%Q1 +50% rev growth, guidance raised but profit-taking persists
ORCL$186.83-3.62%TikTok USDS 15% stake intact, OCI momentum fights tape pressure
SMR$12.00-9.71%Citi PT $9→$7, Goldman $10→$9, Fluor 40M-share exit weighs
COIN$207.64-4.14%Bitcoin at $80,957, Q1 revenue -30% YoY both drag
LAES$2.94-3.92%Post-AGM profit-taking continues on +200% YoY Q1 base
ASTS$72.96-11.62%Q1 EPS -$0.66 vs -$0.21 cons, rev $14.7M vs $37.5M cons

BMNR fell -5.86% as crypto risk-off ran ahead of the structural ETH treasury story. NVO ticked higher on the Wegovy 7.2mg high-dose efficacy print, where fast-responder patients dropped 27.7% of body weight at 72 weeks.

ZETA pulled back -1.57% despite Q1 revenue growth of +50% YoY and a raised 2026 guide. ORCL fell -3.62% on broad de-risking, with the TikTok USDS Joint Venture 15% stake closed back in January and OCI growth intact as the structural pillars.

SMR collapsed -9.71% as Citi cut the price target to $7 and Goldman to $9, layered onto Fluor's full ~40M-share exit from its NuScale position. COIN dropped -4.14% as Bitcoin slipped to $80,957 and the Q1 revenue print sat at $1.41B versus $2.03B a year earlier.

LAES gave back -3.92% in the post-AGM unwind despite Q1 revenue tripling year-on-year. ASTS plunged -11.62% as Q1 EPS missed at -$0.66 vs -$0.21 consensus and revenue printed $14.7M vs $37.5M expected, compounded by guidance for a Q2 satellite-loss write-off of $155M–$160M.

5. Earnings Watch

Korean earnings matter today because two heavyweight names — Korea Electric Power (015760) and SK Innovation (096770) — report into the session, with refining margins and power-cost recovery dynamics both live variables.

CompanyEPS Consensus (KRW)Revenue ConsensusReport Date
Korea Electric Power (015760)3,743KRW 24.73T2026-05-13
SK Innovation (096770)1,247KRW 20.84T2026-05-13
SK Holdings (034730)11,019KRW 31.63T2026-05-21

The biggest watch is SK Innovation's refining-margin print. Street estimates point to Q1 operating profit near KRW 1.6 trillion, a +374% step-up quarter-on-quarter, driven by inventory revaluation gains on WTI's $100+ regime and tightened distillate margins. IBK Investment recently raised its target to KRW 200,000 from KRW 165,000.

Korea Electric Power is expected to deliver Q1 operating profit near KRW 4.4 trillion, in line with consensus but with full-year 2026 and 2027 estimates flagged for downward revisions of 35% and 27% respectively. The read-through for Korea is direct: refiners benefit from the oil channel, while utilities face fuel-cost squeeze and a longer cost-recovery cycle.

6. Today's Trade Setup

The expected open direction for tomorrow's Korea session is flat-to-slightly-negative. US overnight futures show S&P 500 -0.23%, Nasdaq -0.99%, Dow +0.12% — the SOX channel and CPI repricing are still bleeding through, while USD/KRW at 1,474 (+0.95%) is stable but not retracing.

The single most important indicator to watch is foreign net flow in Samsung Electronics (005930) and SK Hynix (000660) at the 9:00–9:05 KST open. Today's index rally with both megacaps down suggests foreign buying was not in the megacaps; if 9:00 prints flip positive, the rebound becomes credible.

The two sectors to focus on are refiners and autos. SK Innovation (096770) reports today with Q1 operating profit estimated near KRW 1.6 trillion on WTI $100+ refining margin tailwinds. Hyundai Motor (005380) is the cleanest beneficiary of USD/KRW above 1,470 if global risk-on returns.

ScenarioTrigger ConditionKOSPI Target
BullNasdaq futures retrace above -0.5%, foreign net buy in Samsung > +200B KRWTests 7,900
NeutralFutures stay -1% range, foreign flow mixed, refiners outperform7,750–7,850 range
BearNasdaq futures break -1.5%, WTI above $105, foreign sell extends another KRW 2TTests 7,650

Base case is a 7,750–7,850 range as the market digests yesterday's +4.32% move against a hot US CPI and an oil-driven inflation channel. Readers without direct KRX access can track this through EWY (iShares MSCI South Korea) or the Samsung Electronics GDR.

DONGCHUN'S WRAP

One CPI print just put the rate-cut narrative on hold and the chip rally on probation. The next session decides if today's Korean decoupling was conviction or a one-day quirk.

So — which way does Korea swing at the open today?

That's the AM breakdown for May 13. Trade safe.

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