Key TakeawaysThe S&P 500 was essentially flat on Wednesday, Nov. 13, adding less than 0.1% as the latest inflation data matched expectations.Warner Bros. Discovery shares surged after Wolfe Research upgraded the stock, highlighting overseas strength for the Max streaming service and potential re-bundling opportunities.Shares of Monolithic Power Systems dropped, extending losses in the wake of a report saying its allocation in Nvidia's new AI chips could be in jeopardy. Major U.S. equities indexes were mixed ...