NEW YORK, Aug. 28, 2023 /PRNewswire/ — S&P Dow Jones Indices will make the following changes to the S&P SmallCap 600 effective prior to the opening of trading on Friday, September 1: Goosehead Insurance Inc. (NASD: GSHD) will replace NuVasive Inc. (NASD: NUVA) in the S&P SmallCap 600….