NEW YORK, May 19, 2025 /PRNewswire/ -- Pegasystems Inc. (NASD: PEGA) will replace Nordstrom Inc. (NYSE: JWN) in the S&P MidCap 400 effective prior to the opening of trading on Thursday, May 22. The Nordstrom family and El Puerto de Liverpool S.A.B. de C.V. (BMV: LIVEPOL) are acquiring Nordstrom in a deal expected to be completed on May 20.Following is a summary of the changes that will take place prior to the open of trading on the effective date: Effective Date Index Name       Action Company Name T ...