** Shares of Super Micro SMCI.O down 10.9% at $51.03 in extended trading
** Co misses estimates for fourth-quarter revenue, hit by intense competition from larger server makers for high-performance computers used to train artificial intelligence models
** Revenue for the quarter was $5.76 billion, compared with analysts' average estimate of $5.89 billion, according to data compiled by LSEG
** As of last close, SMCI gained nearly 88% YTD