Why Is Magnachip Semiconductor ( $MX) Stock Up +16.36% Today? (Find out why any stock moved today on Tickeron.) MX shares jumped about 16.36%, rising from a prior close of $2.75 to roughly $3.20. The primary catalyst was a $5 million strategic equity investment from Navitas Semiconductor, deepening an existing silicon carbide (SiC) technology partnership. The investment is priced at $3.42 per share, well above the stock's prior close, signaling confidence from a strategic partner. $ARM $RMBS $SYNA $VLN $VSH