Tenon Medical is trading at $4.31, up 5.38%, in pre-market amid the full commercial launch of its SImmetry+ SI joint fusion system. - The company announced the launch on September 30, following a limited alpha launch that generated approximately $1.2 million in incremental revenue. - Shares closed September 30 at $4.09, up 49.82%; the supplied pre-market quote is 5.38% above that close. - No separate October 1 announcement was found.