This is CNBC's Morning Squawk newsletter. Subscribe here to receive future editions in your inbox. Happy Thursday. Elon Musk will return the stand today in the case between him and OpenAI's Sam Altman. Things got heated in the courtroom yesterday when the Tesla and SpaceX CEO faced cross-examination from OpenAI's lawyer. Stock futures are rising this morning. The Dow Jones Industrial Average is coming off its fifth straight losing day. Here are five key things investors need to know to start