Why Is Sono Group N.V. ( $SSM ) Stock Up +63% Today? (Find out why any stock moved today on Tickeron.) Shares surged roughly 63% in early trading to around $2.38, versus a prior close of $1.46. No new fundamental announcement accompanied the move; the rally was driven by speculation and extremely thin liquidity. The primary narrative remains the proposed business combination with Sports One, announced August 31, 2026. $CYD $FLYE $PSNY $STLA $LOT