Full Press Release Details
NEW YORK , June 26, 2026 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P SmallCap 600:
• Gulfport Energy Corp. (NYSE: GPOR ) will replace Select Medical Holdings Corp. (NYSE: SEM ) effective prior to the opening of trading on Wednesday, July 1. Select Medical Holdings is being acquired in a deal expected to be completed soon, pending final closing conditions.
• Mobility Global Inc. (NYSE: MBGL ) will replace Core Laboratories Inc. (NYSE: CLB ) effective prior to the opening of trading on Thursday, July 2. S&P 500 constituent S&P Global Inc. (NYSE: SPGI ) is spinning off Mobility Global in a transaction expected to be completed July 1. Core Laboratories is no longer representative of the small-cap market space.
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
Ticker
GICS Sector
July 1, 2026
S&P SmallCap 600
Addition
Gulfport Energy
GPOR
Energy
July 1, 2026
S&P SmallCap 600
Deletion
Select Medical Holdings
SEM
Health Care
July 2, 2026
S&P SmallCap 600
Addition
Mobility Global
MBGL
Industrials
July 2, 2026
S&P SmallCap 600
Deletion
Core Laboratories
CLB
Energy
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