Five Things: AI bubbles, a stock crash, spurned suitors and multibillion-dollar M&A deals

Good morning, Boston. Did you feel yesterday’s earthquake? I was downtown and just assumed it was a truck going by. Little did I know it was a temblor. Here are the five things you need to know in local business news to start your busy Tuesday.

One of the largest public tech companies in Massachusetts is going to be acquired by a Missouri-based Fortune 500 company, Jess Aloe reports — meaning one less locally run public company employer.

Hannah Green reports that Sage Therapeutics Inc.…