S&P Dow Jones Indices said Uniti Group Inc. will be added to the S&P SmallCap 600 Global Industry Classification Standard Specialized Real Estate Investment Trusts Sub-Industry index before market open Dec. 23.

The communications real estate investment trust will replace Carrizo Oil & Gas Inc., which is being acquired by Callon Petroleum Co., in the S&P SmallCap 600 index.

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