Tesla, Inc. (NASDAQ:TSLA) disclosed in its fourth-quarter earnings release that it will invest approximately $2 billion into CEO Elon Musk's artificial intelligence startup, xAI.TSLA stock is climbing. See the chart and details here. The Investment DetailsTesla is participating in xAI's Series E funding round, which recently raised a total of $20 billion and values the AI firm at a staggering $230 billion. While Tesla's contribution accounts for 10% of this specific funding round, it equates to less than a ...