Amazon.com Inc. founder Jeff Bezos unloaded $2 billion worth of the e-commerce giant’s stock last week, but that’s not a signal that investors should join him in selling. Bezos, currently the company’s executive chair, dumped nearly 12 million Amazon shares AMZN, -1.11$170 in a series of transactions made Wednesday and Thursday. The sales, which were disclosed in a Friday filing with the Securities and Exchange Commission, were his first since he unloaded 60 million share ...