Key TakeawaysThe S&P 500 gained less than 0.1% on Thursday, Dec. 28, 2023, eking out a small advance after oscillating just beneath its all-time high.Tinder owner Match Group led the index as an analyst highlighted the online dating company's growth potential.Oil prices declined as shipping conditions in the Red Sea improved, putting downward pressure on shares of Apache Corp. along with other companies in the oil and gas sector.U.S. equities were little changed on Thursday, with the S&P 500 grinding out a ...