NEW YORK, Dec. 30, 2024 /PRNewswire/ — Acadia Pharmaceuticals Inc. (NASD: ACAD) will replace Independent Bank Group Inc. (NASD: IBTX) in the S&P SmallCap 600 effective prior to the opening of trading on Friday, January 3, 2025. S&P MidCap 400 constituent SouthState Corp. (NYSE: SSB) is…