Analysis of U.S. Market Themes and Their Impact on Korea — 2026-04-29
As Big Tech earnings season kicks off, tech stocks are driving a market rally, with optimism surrounding U.S.-Iran negotiations providing a boost to global markets. The KOSPI broke the 6,600-point mark for the first time on April 27, closing at 6,615.03, led by strong semiconductor earnings. Global tech investment continues to surge, with CAPEX in the S&P 500 tech sector rising by 49–56% year-over-year.
Analysis of U.S. Market Themes and Their Impact on Korea — 2026-04-29
Key U.S. Market Sectors and Global Issues
1. Big Tech Earnings Week — AI and Tech Stock Surge
With Big Tech earnings announcements approaching, tech stocks are leading the market rally. Experts in the financial investment industry project that "expectations for major company earnings will have a positive impact on the market."
Key points:
- The Nasdaq and S&P 500 continue to hit all-time highs.
- In March and April 2026, CAPEX for the S&P 500 Tech sector surged by 49% and 56% year-over-year, respectively, signaling a continued global economic expansion.
- Analysts are monitoring the potential for WTI crude oil to exceed $100 and increased tech stock volatility if geopolitical tensions involving Iran escalate.

2. Rare Earth and Defense Themes — The Common Denominator
Artificial Intelligence (AI), Electric Vehicles (EVs), and defense—the "hottest" themes in the U.S. stock market—all rely heavily on rare earth elements. REMX, an ETF focused on rare earths, has rallied nearly 160% over the past year.

3. Hopes for Easing Geopolitical Risks — U.S.-Iran Negotiations
Hopes that volatility stemming from the U.S.-Iran conflict might ease are acting as a positive catalyst. However, uncertainty remains as negotiations face difficulties.
- President Trump canceled his Iran negotiation team's trip to Pakistan, stating, "If Iran wants to talk, they can call."
- Markets are reacting sensitively to the progress of U.S.-Iran negotiations and the direction of the dollar, with gold prices fluctuating in the $4,700-per-ounce range.
- Some analysts suggest "the Iran-led shock is an opportunity," and some frontier funds have even begun outperforming the S&P 500.
Key Figure Commentary
Elon Musk — Unveiling Tesla HW4 Plus
Attention is focused on Tesla's announcement regarding its next-gen autonomous driving computer, 'HW4 Plus.' During the quarterly earnings call, Musk revealed that the new AI4.1 (or AI4 Plus) chip will double the memory, featuring 32GB of RAM per chip for a total of 64GB of system memory.
- Market Implications: Improvements in Tesla's autonomous driving technology are stimulating investment sentiment across the autonomous driving and AI semiconductor supply chain. This could be a positive signal for Korean automotive semiconductor and camera module companies.
President Trump — Iran Negotiations and Fed Pressure
- Trump effectively canceled the second round of negotiations with Iran, increasing uncertainty. His comment, "If Iran wants to talk, they can call," has made the future of these talks unclear.
- Market Implications: The potential for renewed Middle East tensions increases volatility in the energy and defense sectors, while safe-haven assets may gain favor if risk aversion intensifies.
Federal Reserve FOMC — Policy Announcement Expected This Week
- Analysts warn that tech stock volatility could rise if the 10-year Treasury yield approaches 4.5% following the Fed's policy announcement this week.
- Market Implications: The rate decision directly impacts foreign capital flows and exchange rates in the Korean market. A dovish tone from Chair Powell would be a positive factor for emerging markets.
Impact on Korean Markets and Promising Sectors/Stocks

The KOSPI closed at 6,615.03 on April 27, up 139.40 points (+2.15%), breaking the 6,600-point threshold for the first time in history. The KOSDAQ also rose by 22.34 points (+1.86%).
1. Semiconductor & AI Sector — Beneficiaries of Big Tech Earnings
The surge in U.S. Big Tech CAPEX and expanded AI investment are expected to directly benefit the Korean semiconductor industry.
- Stocks to Watch:
- Hyundai Mobis: Expected to benefit from technology upgrades by global automakers like Tesla through the supply of autonomous mobility solutions.
- Semiconductor stocks in general: Increased U.S. tech sector CAPEX (up 49–56% YoY) is driving demand for HBM and AI accelerators.
2. Defense & Energy Sector — Reflecting Geopolitical Risks
Market interest is concentrated on defense and energy-related stocks due to continued uncertainty surrounding U.S.-Iran tensions.
- Stocks to Watch:
- Hanwha Engine: A defense-related company that may benefit amidst geopolitical tension.
- Hyosung Heavy Industries: Expected to benefit from energy infrastructure demands.
3. Construction & Infrastructure Sector — Earnings Momentum
Investors are focusing on companies with clear earnings momentum during the current earnings season.
- Stocks to Watch:
- DL E&C: Highlighted on April 27 as earnings expectations are being reflected in the stock price.
Market Summary
- KOSPI: Closed at 6,615.03 (+2.15%) on April 27, breaking the 6,600 mark for the first time.
- KOSDAQ: Rose 22.34 points (+1.86%) on April 27.
- Gold: Fluctuating in the $4,700-per-ounce range, reacting sensitively to U.S.-Iran talks and the dollar.
- Key Variables This Week: U.S. Big Tech earnings announcements + Fed FOMC policy announcement. While earnings momentum supports market growth, interest rate decisions and Middle East geopolitics remain sources of volatility.
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