Why Is SiTime ( $SITM ) Stock Up +9.59% Today? (Find out why any stock moved today on Tickeron.) Shares of SiTime surged 9.59% to $601.52 in Thursday's session, up from a prior close of $548.90. The primary catalyst was a bullish initiation of coverage by Morgan Stanley with an Overweight rating and a $730 price target. $MTSI $LRCX $KLIC $AMKR $DIOD