Summary: Here's everything you need to know before Wednesday's opening bell: Gary Cohn resigned after failing to convince Trump to reverse his tariff plans. Oprah sold some Weight Watchers shares, but retained more than 75% of her stake in the company. Urban Outfitters recorded a $64.7 million tax charge for repatriation. A group of investors reportedly pulled out of a deal to buy the Weinstein Co. after discovering undisclosed debt. U.S. stock futures sunk on fears of an escalated global trade war.
