KORU is trading $22.23 pre-market, down 6.5%, with the decline appearing more likely tied to thin liquidity, a temporary pricing dislocation, or ETF-specific trading than a broad Korea-market selloff. - On September 23, the KOSPI opened 1.94% higher; Samsung Electronics rose 2.35% and SK hynix gained 3.1%. - U.S. semiconductor strength supported Korean equities, while U.S. index futures were modestly positive and offered no clear macro explanation for KORUβs drop.