[2026.05/25~05/29] Korea Stock Market Weekly Preview | KOSPI Eyes 8,000 Reclaim, US Core PCE & Samsung Strike in Focus
📌 Next Week Outlook Summary
After a sharp sell-off followed by a dramatic V-shaped rebound, the KOSPI is set to attempt reclaiming and holding the 8,000 level next week (May 25–29). The US Core PCE price index and preliminary GDP due on May 28, along with the possibility of a Samsung Electronics strike, are flagged as the key variables that will determine market direction.
Last week, Korean equities delivered a roller-coaster ride before closing the week with strong upward momentum. The KOSPI was pushed down to the 7,053 area early in the week amid a sharp correction, but staged a stunning V-shaped rebound — surging +8.42% in a single session on May 21. With a supportive overseas backdrop, investor attention next week will center on whether the KOSPI can firmly settle above the 8,000 mark. In this weekly preview, we review last week's market action, global trends, themes to watch, and the upcoming economic calendar.
📊 Last Week Market Summary (May 18–22)
Both the KOSPI and KOSDAQ suffered a sharp early-week decline before rebounding strongly in the latter half, finishing the week firmly higher. Volatility was elevated, but on a weekly basis both indices recorded clear recoveries.
| Index | Weekly Open | Weekly Close | Weekly High | Weekly Low | Weekly Change | Weekly Volume |
|---|---|---|---|---|---|---|
| KOSPI | 7,443.29 | 7,847.71 | 7,886.64 | 7,053.84 | +5.43% | 264,923.5만 |
| KOSDAQ | 1,122.57 | 1,161.13 | 1,165.80 | 1,038.23 | +3.43% | 524,020.8만 |
📅 Daily Performance
The first three trading sessions saw a continued correction, but sentiment reversed dramatically when the KOSPI surged +8.42% in a single day on May 21.
| Date | KOSPI Close | KOSPI Change | KOSDAQ Close | KOSDAQ Change |
|---|---|---|---|---|
| 05/18 (Mon) | 7,516.04 | +0.31% | 1,111.09 | -1.66% |
| 05/19 (Tue) | 7,271.66 | -3.25% | 1,084.36 | -2.41% |
| 05/20 (Wed) | 7,208.95 | -0.86% | 1,056.07 | -2.61% |
| 05/21 (Thu) | 7,815.59 | +8.42% | 1,105.97 | +4.73% |
| 05/22 (Fri) | 7,847.71 | +0.41% | 1,161.13 | +4.99% |
The KOSPI fell -3.25% on May 19 and -0.86% on May 20, briefly sliding to the 7,053 area, but then rebounded sharply with an +8.42% surge on May 21. The KOSDAQ likewise declined for three straight sessions early in the week before posting strong back-to-back gains (+4.73%, +4.99%) on May 21–22 to recover +3.43% for the week. The pattern of a short, deep correction followed by a swift recovery suggests the market's underlying resilience remains intact.
🌙 Global Market Trends
In the most recent session, all three major US indices closed higher, sustaining a stable tone heading into next week.
| Index | Close | Change |
|---|---|---|
| Dow Jones | 50,579.70 | +0.58% |
| S&P 500 | 7,473.47 | +0.37% |
| Nasdaq | 26,343.97 | +0.19% |
💱 FX & Commodities
The USD/KRW exchange rate stood at 1,520.5, remaining elevated and signaling persistent won weakness. A high exchange rate is favorable for exporters such as autos and shipbuilders, but it can also weigh on foreign investor flows — so it cuts both ways. As for crude oil (WTI), the collected data point was confirmed to be an abnormal value, so we are holding off on any interpretation this week. With AI semiconductor investment sentiment staying constructive, a key question is whether the momentum from Nvidia's earnings will carry over into Korean semiconductor and AI-related names.
🔥 Key Themes to Watch Next Week
1. AI Semiconductors (Bullish bias)
With Nvidia's earnings and AI investment sentiment remaining favorable, pent-up demand is expected to flow into large-cap chipmakers such as SK Hynix and Samsung Electronics. Market analysts also note that, given the constructive backdrop for AI semiconductor sentiment, related waiting demand could be substantial.
2. Samsung Electronics Strike Issue (Caution)
Whether Samsung Electronics faces a strike has been singled out as a key variable that could sway the broader market's direction. As a labor-management issue at the market's largest-cap stock, its impact on the overall index could be significant, so caution around this uncertainty is warranted.
3. Export Plays Benefiting from FX (Watch)
With the won staying weak in the 1,520 range against the dollar, expectations for earnings improvement at export-oriented sectors such as autos and shipbuilding remain valid. As long as the high-FX environment persists, it can create a favorable backdrop for the price competitiveness of exporters.
4. Brokerage & Financial Stocks (Watch)
The resumption of the equity rally, rising trading value, and inflows of retail buying are highlighting potential upside for brokerage stocks. Last week's strong rebound, which reinvigorated market trading activity, is also a positive.
🎯 Scenario Outlook
📈 Bull Case
If the Nvidia-driven AI semiconductor momentum persists and Core PCE comes in line with the forecast (0.3%), confirming a signal of price stability, the KOSPI may break back above 8,000 and attempt to hold there, with the KOSDAQ rising in tandem.
➡️ Neutral Case
Uncertainty over the Samsung Electronics strike and a wait-and-see stance ahead of the Core PCE and GDP releases could keep the index range-bound between 7,800 and 8,000. In this case, theme- and sector-specific divergence is more likely than a broad index move.
📉 Bear Case
If the Samsung Electronics strike materializes or Core PCE comes in above expectations, reigniting inflation concerns, a combination of profit-taking and foreign selling could drag the index down toward the 7,500 area.
📅 Next Week's Economic Schedule (May 25–29)
🌍 Global Key Events (High-impact focus)
| Date (KST) | Time | Country | Event | Forecast / Previous |
|---|---|---|---|---|
| 05/26 (Tue) | 23:00 | US | CB Consumer Confidence | 91.9 / 92.8 |
| 05/27 (Wed) | 10:30 | Australia | CPI y/y | 4.4% / 4.6% |
| 05/27 (Wed) | 10:30 | Australia | Trimmed Mean CPI m/m | 0.3% / 0.3% |
| 05/27 (Wed) | 11:00 | New Zealand | Official Cash Rate & RBNZ Statement | 2.25% / 2.25% |
| 05/28 (Thu) | 21:30 | US | Core PCE Price Index m/m | 0.3% / 0.3% |
| 05/28 (Thu) | 21:30 | US | Prelim GDP q/q | 2.1% / 0.7% |
| 05/29 (Fri) | 17:20 | UK | BOE Gov Bailey Speaks | - / - |
| 05/29 (Fri) | 21:30 | Canada | GDP m/m | 0.1% / 0.2% |
The clear highlight of next week's global calendar is the US Core PCE price index and preliminary GDP, both due on May 28 (Thu). Core PCE is the Fed's preferred inflation gauge, and whether it meets the 0.3% forecast could significantly move expectations for the monetary policy path and global risk appetite. Preliminary GDP is expected to rebound to 2.1% from 0.7% in the prior quarter, serving as a barometer of the strength of the US economic recovery. In addition, New Zealand's rate decision and Australia's Q1 CPI on May 27 (Wed) are worth monitoring as sources of Asia-session volatility.
🏢 Key Earnings & Events (News-based)
Market analysts cite the follow-through from Nvidia's earnings, the trajectory of crude oil prices, and whether Samsung Electronics faces a strike as the core variables for Korean equities next week. A key focal point will be how AI bellwether Nvidia's earnings momentum ripples into Korean semiconductor and AI-related names. The strong inflow of retail buying is also mentioned as a positive on the supply-demand front.
⚡ Investment Checkpoints
- Whether the KOSPI can reclaim and hold the 8,000 level, alongside developments in the Samsung Electronics strike, should be the top priority to monitor.
- The May 28 US Core PCE and preliminary GDP results and the resulting shift in Fed policy expectations and global risk appetite.
- Whether the won/dollar rate holds in the elevated 1,520 range and its impact on the direction of foreign investor flows.
- The spillover effect of Nvidia's earnings momentum into Korean AI semiconductor stocks.
⚠️ Investment Disclaimer
Disclaimer: This post is for informational purposes only and does not constitute investment advice. As demonstrated last week — when the index swung more than 8% in a single day — markets can move sharply against expectations during periods of elevated volatility. Market direction may shift abruptly depending on the outcomes of key events such as the Core PCE release and the Samsung Electronics strike. All investment decisions are the sole responsibility of the investor. Past performance does not guarantee future results. Please approach the market carefully with thorough due diligence and sound risk management.
🇰🇷 Korean Version: https://kai-search.tistory.com/manage/posts/
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