The move also comes after Berkshire Hathaway CEO Warren Buffett stockpiled cash and JPMorgan Chase's CEO Jamie Dimon sold hundreds of millions of dollars worth of JPMorgan's stock in February, leading some to believe that both CEOs were trying to speak to the market. Did Bezos just fire off a similar warning shot to Wall Street? Since founding the company and taking it public, Bezos has sold a lot of stock, about $30 billion worth, a significant amount of which he has used to fund other businesses like his ...