Korea Pre-Market Morning Briefing: Quant-driven Sector Selection and Key Levels

### 1. Global Macro Environment and Pre-Market Direction Global financial markets reflected ongoing high-interest rate and energy cost pressures, with the US 10-year Treasury yield at 5.17% and WTI crude at $93.29 per barrel. Fed net liquidity stood at $5,769.8 billion. Domestically, the USD/KRW exchange rate was recorded at 1,359.3. Despite external FX volatility, differentiated capital inflows continue into export-oriented blue chips and machinery equipment sectors with robust order backlogs. Energy, refining, defense, and shipbuilding sectors are categorized as high-potential sectors for the early session. Screening results indicate that capital concentrates on machinery, industrial manufacturing, steel, and financial sectors. These breakout leaders share business characteristics of export benefits and order growth. Conversely, lagging equities in construction and healthcare suffer from margin compression under prolonged high interest rates and slowing demand. ### 2. High-Conviction Momentum Equities [롯데에너지머티리얼즈 (020150.KS) | Machinery & Industrial Equipment] Trading at 42,600 KRW with a +6.10% daily change, the stock surged +20.7% from its recent low, breaking upper resistance with a 1.2x volume explosion over the 20-day average. The upper resistance is 44,700 KRW and the lower support is 39,800 KRW. Phased entry around 41,000 KRW is advised with a stop-loss at 39,000 KRW. [LS에코에너지 (229640.KS) | Machinery & Industrial Equipment] Trading at 62,500 KRW (-2.34%), the company entered a consolidation phase after a +36.2% rally over the past month, maintaining an intermediate upward trajectory. The upper resistance is 67,800 KRW and lower support is 59,600 KRW. Entry is recommended after testing support near 60,000 KRW with a stop-loss at 58,000 KRW. [삼성전자 (005930.KS) | Semiconductor/Foundry] Trading at 271,500 KRW (-4.90%) with heavy trading volume, the bellwether stock drives the main index while maintaining a gradual upward trend over the past month. The upper resistance is 288,000 KRW and the lower support is 189,200 KRW. Monitoring support around 265,000 KRW is required. ### 3. Downside Risk and Restricted Equities [동신건설 (025950.KQ) | Construction & Infrastructure] Trading at 9,980 KRW (+1.01%), the stock declined -5.5% from its recent high, reflecting slowing momentum in the construction sector. With weak volume recovery, gap-down openings should not be bought, and rallies should be used to reduce exposure. [CMG제약 (058820.KQ) | Pharmaceutical & Biotech] Trading at 548 KRW (-0.54%), the stock faces downside pressure near support levels amid management and administrative designation risks. New purchases are strictly prohibited as downside breakout risks remain high. ### 4. Portfolio Management Guidelines In accordance with early session volume verification principles, chasing speculative bounces without volume support is strictly prohibited. Maintaining a defensive cash proportion above 30% is mandated given the 1,359 KRW exchange rate and high-rate environment. Strictly adhere to stop-loss criteria for lagging construction and small-cap issues, and concentrate portfolio allocation on quantum-jump enterprises breaking upper resistance within leading sectors.