KOSPI Up, KOSDAQ Lags: KOSPI +0.31%, KOSDAQ -1.66% — Korea Close & Tomorrow Outlook 26/05/18
Hey, Dongchun here.
Here is how the Korean market closed today.
The only thing that matters today is the structural divergence — Samsung Electronics single-handedly held the index while Hyundai Motor crashed -5.29% and KOSDAQ bled -1.66%. Foreigners dumped 3.09 trillion KRW on KOSPI for the ninth straight day, and only an 826 billion KRW institutional rescue prevented a 7,100-handle close. Tonight's US semiconductor wreckage means tomorrow's open is the real test of whether Korean chips can decouple from a -4% SOX print.
Previous post: Read it →
1. Korea Market Close
KOSPI closed at 7,516.04, up 0.31%, recovering from an intraday low near 7,142 after a 5.13% futures crash triggered a sidecar at 9:19 a.m. KOSDAQ lagged at 1,111.09, down 1.66%, signaling that the rebound was concentrated in mega-cap names. The session range was the widest in several weeks.
The single biggest driver was Samsung Electronics gaining 3.88% to 281,000 KRW, absorbing what would have been a broad-based selloff. Foreign investors net sold 3.09 trillion KRW on KOSPI — a 9th consecutive day of outflows — but institutions stepped in with 825.9 billion KRW of net buying to hold the line.
Market breadth was poor. While KOSPI looked green at the close, sector data showed Construction +4.05% as the only major gainer, while Transport Equipment (autos) -3.42%, IT Services -3.55%, Entertainment -3.79%, and Machinery -4.02% all collapsed. This was a narrow rescue, not a broad rally.
| Index | Close | Change | Volume |
|---|---|---|---|
| KOSPI | 7,516.04 | +0.31% | Heavy |
| KOSDAQ | 1,111.09 | -1.66% | Heavy |
2. Foreign Flow Analysis
Foreign investors dumped 3.09 trillion KRW on KOSPI, extending net selling to 9 straight sessions. The selling targeted Hyundai Motor and other auto names, while semiconductors saw mixed flow. On KOSDAQ, foreigners switched to net buying of 100 billion KRW — a notable divergence.
Institutions were the heroes today, net buying 825.9 billion KRW on KOSPI to absorb the foreign dump. On KOSDAQ, institutions were net sellers of 161.5 billion KRW, contributing to the index's 1.66% decline. Retail flow data continued to show dip-buying behavior on Samsung Electronics.
The combined pattern points to an institution-rescued tape, not a conviction recovery. Tonight's US session — with SOX down 4.02% and S&P futures at -0.59% — will decide whether tomorrow's open can hold the 7,500 line. Watch the first 30 minutes of foreign flow.
| Investor | KOSPI Net | KOSDAQ Net | Trend |
|---|---|---|---|
| Foreigners | -3,092 B KRW | +100 B KRW | 9-day KOSPI sell streak |
| Institutions | +826 B KRW | -162 B KRW | Rescue bid |
| Retail | Net buy | Net buy | Dip-buying Samsung |
3. Sector Breakdown
Today's dominant theme was extreme divergence — a single-stock semiconductor rescue masking sector-wide damage from rising US yields and oil prices. Construction was the lone bright spot, while autos collapsed on profit-taking after a 45% rally since late April.
Top gainers were led by Samsung Electronics (005930) +3.88% to 281,000 KRW, dragging the entire chip complex higher despite SK Hynix only managing +1.15%. Construction sector gained +4.05% on infrastructure spending expectations.
Top laggards were Hyundai Motor (005380) -5.29% to 663,000 KRW after surging 45.8% in just two weeks, with profit-taking accelerating on the rate shock. Internet names also got hit — NAVER -1.72%, Kakao -3.52% — as IT Services index fell -3.55%. Watch the auto and 2차전지 sectors tomorrow.
| Sector | Direction | Key Stock | Change | Reason |
|---|---|---|---|---|
| Construction | ▲ Strong | — | +4.05% | Infrastructure flow |
| Semiconductors | ▲ Strong | Samsung (005930) | +3.88% | Foreign re-buying |
| Transport Equip | ▼ Weak | Hyundai (005380) | -5.29% | Profit-taking |
| Machinery | ▼ Weak | — | -4.02% | Rate shock |
| IT Services | ▼ Weak | NAVER (035420) | -1.72% | Risk-off |
4. Stocks on My Radar
| Ticker | Price | Session % | Key Event |
|---|---|---|---|
| BMNR | $19.87 | -9.68% | Tom Lee signals slower ETH buying |
| SMCI | $31.04 | -6.02% | Goldman Sachs reiterates Sell |
| ASTS | $83.67 | +0.80% | US carrier satellite JV tailwind |
| POET | $15.97 | -22.36% | $400M dilutive offering |
| RBLX | $42.85 | -1.99% | Lingering Q1 guidance cut |
BMNR fell 9.68% after Chairman Tom Lee said the company may slow its Ethereum accumulation as it approaches the 5% supply target, undermining the ETH treasury premium narrative.
SMCI dropped 6.02% as Goldman Sachs reiterated its Sell rating, highlighting customer concentration risk — one data center client accounts for 27% of quarterly sales and 39% of YTD revenue.
ASTS rose 0.80% as the proposed AT&T/Verizon/T-Mobile satellite joint venture continues to support the long thesis, even after a Q1 revenue miss of $14.7M vs $37.5M consensus.
POET collapsed 22.36% on a $400M direct offering of 19.05M shares and warrants to a single investor, with dilution fears overwhelming a Q1 revenue beat after a 114% weekly surge.
RBLX fell 1.99% on residual weakness from the early-May guidance cut (2026 bookings revised to $7.33–7.60B from $8.28–8.55B) and ongoing child-safety litigation in US federal court.
5. Earnings Watch
The Korean earnings calendar this week is quiet, with SK Holdings (034730) as the major name to watch.
| Company | Report Date | EPS Est (KRW) | Revenue Est |
|---|---|---|---|
| SK Holdings | 2026-05-21 | 13,112 | 30.25 trillion KRW |
SK Holdings, as a holding company aggregating SK Innovation, SK Telecom and SK Hynix value, serves as a directional read on the broader SK group. A beat here could revive momentum across SK-affiliated tickers; a miss would compound today's institutional caution.
Korea read-through for tomorrow: with no Korean mega-cap earnings overnight, the Korean tape is fully exposed to US semiconductor weakness. Samsung Electronics and SK Hynix will likely open lower regardless of Korean fundamentals, given SOX's -4.02% print. The next genuine catalyst is Nvidia earnings on May 20 after the US close.
6. Tomorrow's Korea Open
S&P 500 futures sit at 7,388.75 (-0.59%) and Nasdaq futures at 29,073.75 (-0.54%) in overnight trade. Combined with today's cash session losses (Nasdaq -1.54%, SOX -4.02%), this points to a gap-down KOSPI open tomorrow — likely testing 7,400 support.
The semiconductor reset matters most for Korea. SOX -4.02% with Nvidia, AMD and Broadcom all weak directly threatens Samsung Electronics (005930) and SK Hynix (000660), which were the only reason KOSPI closed green today. If foreigners extend their 9-day selling streak into a 10th, the index loses its single-stock cushion.
Macro pressure is acute. The 10-year UST yield jumped to 4.59% (+3.00%), oil whipsawed with WTI at $102.65/bbl, and VIX rose to 19.25 — still below the 30 panic line but climbing. Major catalyst this week: Nvidia earnings on Wednesday May 20 after market (consensus $78B revenue, $1.77 EPS) sets the tone for the next several Korea sessions.
| Scenario | Trigger Condition | KOSPI Target |
|---|---|---|
| Bull | Nasdaq futures recover above -0.3%, foreign selling pauses at open | Hold 7,500 |
| Neutral | Futures -0.5~1.0%, semis gap down but cushioned by other sectors | 7,400–7,500 |
| Bear | Nasdaq futures break -1%, foreign outflow extends to 10 days | Test 7,300 |
Base case for tomorrow: gap-down open between -0.5% and -1.0%, with a test of the 7,400 support depending on how foreign flow reacts in the first 30 minutes. For readers outside KRX, EWY (iShares MSCI South Korea ETF) and Samsung GDR (005935.LSE) provide proxy exposure to track the same tape.
This was a one-stock rally dressed as a market gain, and one-stock rallies do not survive a -4% SOX follow-through. Watch foreign flow in the first 30 minutes — that single tape decides the week.
So — where does this leave us going into tomorrow?
That's the PM breakdown for May 18. Trade safe.
Comments
Post a Comment