Yelp Set to Join S&P MidCap 400; Gulfport Energy to Join S&P SmallCap 600

S&P MidCap 400 constituent Gulfport Energy Corp. (NASD:GPOR) will replace Oclaro Inc. (NASD: OCLR) in the S&P SmallCap 600, and Yelp Inc. (NYSE:YELP) will replace Gulfport Energy in the S&P MidCap 400 effective prior to the open of trading on Wednesday, December 12. S&P MidCap 400 constituent Lumentum Holdings Inc. (NASD:LITE) is acquiring Oclaro in a deal expected to be completed soon pending final conditions. Gulfport Energy has a market capitalization more representative of the small-cap market space

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