NEW YORK, Oct. 10, 2013 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P MidCap 400 and S&P SmallCap 600 indices:

• S&P SmallCap 600 constituent Gulfport Energy Corp. (NASD:GPOR) will replace WMS Industries Inc. (NYSE:WMS) in the S&P MidCap 400, and Saia Inc. (NASD:SAIA) will replace Gulfport Energy in the S&P SmallCap 600 after the close of trading on Thursday, October 17. WMS is being acquired by S&P MidCap 400 constituent Scientific Games Corp. (NASD:SGMS) in a deal expected to be completed on or about that date pending final approvals. Gulfport Energy is the top ranked company in the S&P SmallCap 600 by market capitalization.
   
• FXCM Corp. (NYSE:FXCM) will replace Kaydon Corp. (NYSE:KDN) in the S&P SmallCap 600 after the close of trading on Tuesday, October 15. AB SKF is acquiring Kaydon Corp. in a deal expected to be completed soon.

Gulfport Energy engages in the exploration, development, and production of oil and natural gas properties. Headquartered in Oklahoma City, OK, the company will be added to the S&P MidCap 400 GICS (Global Industry Classification Standard) Oil & Gas Exploration & Production Sub-Industry index.

Saia provides regional and interregional trucking and logistics services. Headquartered in Johns Creek, GA, the company will be added to the S&P SmallCap 600 GICS Trucking Sub-Industry index.

FXCM provides online foreign exchange trading and related services. Headquartered in New York, NY, the company will be added to the S&P SmallCap 600 GICS Investment Banking & Brokerage Sub-Industry index.

Following is a summary of the changes:

Additions to and deletions from S&P  Dow Jones Indices do not in any way reflect an opinion on the investment merits of the companies involved.

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For more information:

Dave Guarino
Communications
S&P Dow Jones Indices
dave.guarino@spdji.com
(212) 438-1471

David Blitzer
Managing Director and Chairman of the Index Committee
S&P Dow Jones Indices
david.blitzer@ spdji.com
(212) 438-3907

SOURCE S&P Dow Jones Indices