Summary: Here's everything you need to know before Thursday's opening bell: Tesla reported a quarterly loss of $3.04 a share, its largest ever. Amazon introduced free two-hour Whole Foods grocery delivery in select locations via its Prime Now service. Revenue at Fox's cable TV division rose 10%. Former GE CEO Jeff Immelt was named chairman of Athenahealth . U.S. stock futures pointed toward a mixed a mixed start. Watch TheStreet's investing interviews on Youtube
