US stock pre-market: Semiconductor stocks plunge, semiconductor-related ETFs tumble, SpaceX drops nearly 5%

SpaceX fell 4.9% to $147, below its first-day opening price. Semiconductor-related ETFs plunged: the 3x leveraged Korea ETF-Direxion dropped 32%, the 3x leveraged Semiconductor ETF-Direxion fell 17%, the 2x leveraged SNDK ETF-Tradr and the 2x leveraged MU ETF-Direxion both fell over 19%, and the 2x leveraged INTC ETF-Direxion dropped 18%. Related article: With the tech boom cooling, global stock markets saw a "Black Tuesday," with Korean stocks closing down 10%, Nasdaq futures falling 2%, and spot gold dropping below $4,100.