Supermicro (SMCI) shares are down 25%, or $6.81, to $20.89 in premarket trading. Published first on TheFly – the ultimate source for real-time, market-moving breaking financial news. Try Now>> See today’s best-performing stocks on TipRanks >> Read More on SMCI: QQQ ETF Update, 11/6/2024 JPMorgan downgrades Supermicro to Underweight on uncertainty after update Supermicro downgraded to Underweight from Neutral at JPMorgan Supermicro sinks 20% to $22.04 after outlook misses estimates Supermicro price target lowered to $25 from $42 at Barclays