Stock Market Today, Dec. 15: Tesla Shares Surge on Optimism Around Autonomy and AI Roadmap

On Dec. 15, 2025, investors weighed fresh robotaxi trials and AI ambitions against mounting questions over Tesla’s rich valuation.NASDAQ : TSLATeslaToday's Change( 3.56 %) $ 16.35Current Price$ 475.31Key Data PointsMarket Cap$1.5TDay's Range$ 467.66 - $ 481.7752wk Range$ 214.25 - $ 488.54Volume114MAvg Vol86MGross Margin17.01 %Tesla (TSLA +3.56%) closed Monday’s session at $475.31, up 3.56%. Trading volume reached 113.6 million shares, nearly 30% above its three-month average of 86.7 million shares.How the m ...