NEW YORK, Dec. 19, 2018 /PRNewswire/ -- Celanese Corp. (NYSE: CE) will replace Express Scripts Holding Co. (NASD: ESRX) in the S&P 500 effective prior to the open of trading on Monday, December 24. S&P 500 constituent Cigna Corp. (NYSE:CI) is acquiring Express Scripts Holding in a deal expected to close soon pending final conditions. Post-merger, Cigna will change its Global Industry Classification Standard (GICS) Sub-Industry group to Health Care Services from Managed Health Care.

Celanese manufactures and sells value-added chemicals, thermoplastic polymers, and other chemical-based products. Headquartered in Irving, TX, the company will be added to the S&P 500 Global GICS Specialty Chemicals Sub-Industry index.

Following is a summary of the change:

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