Chime Financial Set to Join S&P MidCap 400

/PRNewswire/ -- Chime Financial Inc. (NASD: CHYM) will replace NorthWestern Energy Group Inc. (NASD: NWE) in the S&P MidCap 400 effective prior to the opening of trading on Wednesday, November 18. S&P MidCap 400 constituent Black Hills Corp. (NYSE: BKH) is acquiring NorthWestern Energy Group in a deal expected to be completed today. Post-merger, the combined company will remain in the S&P MidCap 400 and will be renamed Bright Horizon Energy Corp. (NYSE: HZN).

The Details

Following is a summary of the changes that will take place prior to the open of trading on the effective date:

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• Effective Date
• Index Name
• Action
• Company Name
• Ticker
• GICS Sector
• November 18, 2026
• S&P MidCap 400
• Addition
• Chime Financial
• CHYM
• Financials
• November 18, 2026
• S&P MidCap 400
• Deletion
• NorthWestern Energy Group
• NWE
• Utilities
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