NEW YORK, Aug. 25, 2025 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P 500, S&P MidCap 400, and S&P SmallCap 600: S&P MidCap 400 constituent Interactive Brokers Group Inc. (NASD: IBKR) will replace Walgreens Boots Alliance Inc. (NASD: WBA) in the S&P 500, and Talen Energy Corp. (NASD: TLN) will replace Interactive Brokers Group in the S&P MidCap 400 effective prior to the opening of trading on Thursday, August 28. Sycamore Partners is acquiring Walgreens Boots Alliance in a ...