Key TakeawaysThe S&P 500 slipped 0.2% on Wednesday, Sept. 4, as a report showing a drop in job openings corroborated recent signals of a cooling labor market.Dollar Tree stock plunged after the discount retailer missed quarterly expectations and cut its full-year guidance, citing macroeconomic challenges.Shares of Tesla jumped amid reports the carmaker plans to launch a six-seat variant of its Model Y vehicle. Major U.S. equities indexes continued their sluggish start to September, ending mixed and little c ...