Key TakeawaysThe S&P 500 slipped 0.2% on Wednesday, Sept. 25, retreating from the prior day's record close as concerns about economic growth resurfaced.Shares of General Motors and Ford moved lower after Morgan Stanley downgraded both stocks, citing competition from China and a challenging consumer environment.Vistra stock surged as several research firms boosted their price targets on shares of the utility, expressing increased confidence in the company's data center opportunities. Major U.S. equities inde ...