US Credit Rating Cut Triggers Surge In Treasury Yields: 7 ETFs Experience Wild Swings - Direxion Daily Gold Miners Index Bull 2XShares (ARCA:NUGT), Invesco Solar ETF (ARCA:TAN), ProShares Trust Ultra VIX Short Term Futures ETF (BATS:UVXY), ProShares UltraPro QQQ (NASDAQ:TQQQ), Global X Robotics & Artificial Intelligence ETF (NASDAQ:BOTZ), iShares 20+ Year Treasury Bond ETF (NASDAQ:TLT), VanEck Semiconductor ETF (NASDAQ:SMH)