Institutional Korea Market Close: KOSPI Holds Above 7000 Led by Machinery and Export Sectors

### 1. Identification of Core Common Factors and Money Flow Thesis: On September 21, 2026, the Korean domestic stock market closed with the KOSPI rising 1.65% (113.49pt) to 7,007.72pt and the KDAQ rising 1.11% (9.15pt) to 836.27pt, under macro conditions of the USD/KRW exchange rate at 1,378.1 and the US 10-year Treasury yield at 4.94%. Screening results indicate that upside breakout leading stocks are concentrated in machinery and general industrial manufacturing, steel and industrial metals, and financials, sharing business models featuring export currency benefits and order backlog expansion. Technically, these leading stocks exhibited a common signature of breaking above upper resistance levels with an average 1-month return of +4.7% and 1.1x average 20-day volume expansion. Conversely, downside breakdown target stocks share vulnerabilities in construction and infrastructure, machinery, and health supplements, suffering from rate-hike valuation discounts and margin compression, showing an average 1-month decline of +4.1% and breaking below 1-month core support levels . ### 2. Quantitative Analysis of Core Leading Stocks: - LS EcoEnergy (229640.KS) trades at 59,900 KRW, surging +33.9% over the past month, backed by rare earth supply chain initiatives and volume expansion. - SNT Energy (100840.KS) trades at 36,750 KRW, up +31.0% over a month following stake acquisition disclosures and strong order pipelines. - Samsung Electronics (005930.KS) trades at 274,000 KRW, up +4.98% intraday, driven by a 15 trillion KRW share buyback decision and robust institutional liquidity. ### 3. Downside Breakdown and Vulnerable Target Stocks: - Newon (123840.KQ) trades at 1,849 KRW, down 4.00% amid insider stake reduction reports and cautious sentiment. - Dongshin Construction (025950.KQ) trades at 9,950 KRW, remaining sluggish near lower boundaries due to high-interest-rate burdens on construction sectors. ### 4. Strategy Based on Thesis Continuation: Upside breakout leaders backed by solid export orders warrant continued scaling on resistance breakouts. Downside breakdown stocks require strict stop-loss execution upon testing key support levels.