Stock Market Today, Jan. 28: Earnings from Microsoft, Meta, and Tesla follow S&P milestone

One of the big stories that come in tandem with these results is a tie-up with Elon Musk 's other AI venture: Xai. The company will invest $2 billion in the firm and cooperate on some "potential AI collaborations."As has become increasingly common, the company emphasized future product development, namely on its Optimus robot, RoboTaxi product, and utility-grade battery system. The firm's diversification away from being a pure-play electric vehicle producer has come amid global pressures on the auto market. ...