[Semiconductor-Related ETFs Plunge at U.S. Market Open, 3x Long Korea ETF-Direxion Drops 35%] According to Golden Finance, on June 23, at the U.S. market open, the 3x Long Korea ETF-Direxion plummeted 35%, while the 3x Long Semiconductor ETF-Direxion fell 22%. The 2x Long SNDK ETF-Tradr and 2x Long MU ETF-Direxion both dropped over 22%, and the 2x Long INTC ETF-Direxion declined 18%.