NEW YORK, March 9, 2018 /PRNewswire/ -- S&P Dow Jones Indices will make the following index adjustments to the S&P 500, S&P MidCap 400 and S&P SmallCap 600 to ensure each index more appropriately represents its market capitalization range. The changes will be effective prior to the open on Monday, March 19 to coincide with the March rebalance. All companies moving to the S&P 500 have total market capitalizations above $12 billion. All companies moving to the S&P MidCap 400 and S&P SmallCap 600 are more appropriate for those indices.

S&P MidCap 400 constituents Take-Two Interactive Software Inc. (NASD: TTWO) and SVB Financial Group (NASD:SIVB) will switch places with Signet Jewelers Limited (NYSE:SIG) and Patterson Companies Inc. (NASD:PDCO) respectively in the S&P 500. S&P SmallCap 600 constituent Nektar Therapeutics (NASD:NKTR) will replace Chesapeake Energy Corp. (NYSE:CHK) in the S&P 500, Chesapeake Energy will replace Dean Foods Co. (NYSE:DF) in the S&P MidCap 400, and Dean Foods will replace Nektar Therapeutics in the S&P SmallCap 600.  

S&P SmallCap 600 constituents Cantel Medical Corp. (NYSE:CMD) and ICU Medical Inc. (NASD:ICUI) will switch places with Avon Products Inc. (NYSE:AVP) and Owens & Minor Inc. (NYSE:OMI) in the S&P MidCap 400.

Take-Two Interactive Software develops, publishes, and markets interactive entertainment solutions for consumers.  Headquartered in New York, NY, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Home Entertainment Software Sub-Industry index.

SVB Financial Group provides various banking and financial products and services.  Headquartered in Santa Clara, CA, the company will be added to the S&P 500 GICS Regional Banks Sub-Industry index.

Nektar Therapeutics discovers and develops drug candidates for cancer, auto-immune disease, and chronic pain.  Headquartered in San Francisco, CA, the company will be added to the S&P 500 GICS Pharmaceuticals Sub-Industry index.

Signet Jewelers engages in the retail sale of diamond jewelry, watches, and other products. Headquartered in Hamilton, Bermuda, the company will be added to the S&P MidCap 400 GICS Specialty Stores Sub-Industry index.

Patterson distributes and sells dental and animal health products. Headquartered in St. Paul, MN, the company will be added to the S&P MidCap 400 GICS Health Care Distributors Sub-Industry index.

Chesapeake Energy engages in the acquisition, exploration, and development of properties for the production of oil, natural gas, and natural gas liquids.  Headquartered in Oklahoma City, OK, the company will be added to the S&P MidCap 400 GICS Oil & Gas Exploration & Production Sub-Industry index.

Dean Foods processes and distributes milk, and other dairy and dairy case products. Headquartered in Dallas, TX, the company will be added to the S&P SmallCap 600 GICS Packaged Foods & Meats Sub-Industry index.

Cantel Medical Corp. provides infection prevention products and services for the healthcare market.  Headquartered in Little Falls, NJ, the company will be added to the S&P MidCap 400 GICS Health Care Equipment Sub-Industry index.

ICU Medical develops, manufactures, and sells medical devices used in infusion therapy, critical care, and oncology applications.  Headquartered in San Clemente, CA, the company will be added to the S&P MidCap 400 GICS Health Care Supplies Sub-Industry index.

Avon Products manufactures and markets beauty and related products. Headquartered in London, England, the company will be added to the S&P SmallCap 600 GICS Personal Products Sub-Industry index.

Owens & Minor operates as a healthcare services company. Headquartered in Mechanicsville, VA, the company will be added to the S&P SmallCap 600 GICS Health Care Distributors Sub-Industry index.

Following is a summary of the changes:

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