Overstock.com Inc. OSTK -4.14% shares fell as much as 10% Thursday morning after the company's cryptocurrency -focused subsidiary, tZero, said that the Securities and Exchange Commission was investigating its sale of digital tokens. In a securities filing Thursday, the online retailer revealed that the ... from Google Alert - cryptocurrency http://ift.tt/2GTA1nQ via IFTTT http://ift.tt/eA8V8J