Joan Valls / Urbanandsport / NurPhoto via Getty Images Shares of Delta Air Lines surged after the carrier posted better-than-expected results and issued a rosy current-quarter outlook Key Takeaways Major U.S. equities indexes pulled back Thursday after the S&P 500 and Nasdaq set fresh all-time highs. Delta Air Lines shares jumped after the carrier posted quarterly earnings that topped analysts' estimates. Tesla shares slid after the National Highway Traffic Safety Administration opened an investigati ...