Why Jamie Dimon selling $150 million in JPMorgan’s stock could be reason for caution

JPMorgan Chase & Co. CEO Jamie Dimon dumped $150 million in the company’s stock Thursday in his first-ever sale, a recent filing shows. He had previously indicated an intent to unload stock.Dimon sold 821,800 JPMorgan shares JPM, +0.50%at average prices near $182.73, according to a filing with the Securities and Exchange Commission. The sales were made through a Rule 10b5-1 trading plan, which allows company insiders like executives and board members to arrange for stock to be sold und