Chime to Enter S&P MidCap 400 as Utility Merger Reshapes Index
S&P Dow Jones Indices announced the index revision on November 13, 2026, that Chime Financial will replace NorthWestern Energy Group in the S&P MidCap 400 before trading opens on November 18, 2026. Black Hills Corp.'s acquisition of NorthWestern was expected to be completed on November 13, 2026. Chime will enter as a Financials constituent trading under CHYM, while NorthWestern leaves as a Utilities constituent trading under NWE. Black Hills is already a MidCap 400 member. Post-merger, the…