NEW YORK, Sept. 11, 2013 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P 500, S&P MidCap 400 and S&P SmallCap 600 indices:

• Two S&P 500 constituents will switch places with two S&P MidCap 400 constituents effective after the close of trading on Friday, September 20. S&P MidCap 400 constituents Vertex Pharmaceuticals (NASD:VRTX) and Ametek Inc. (NYSE:AME) will replace Advanced Micro Devices Inc. (NYSE:AMD) and SAIC Inc. (NYSE:SAI) in the S&P 500, and Advanced Micro Devices and SAIC will replace Vertex Pharmaceuticals and Ametek in the S&P MidCap 400.  These transfers will make each index more representative of its market capitalization range. The companies moving to the S&P 500 both have market capitalizations above $10 billion.  Advanced Micro Devices is ranked #500 in the S&P 500 and has a market capitalization more representative of the midcap market space. SAIC will be splitting into 2 companies in a transaction expected to be completed before month end.
• Capstead Mortgage Corp. (NYSE:CMO) will replace Rue 21 Inc. (NASD:RUE) in the S&P SmallCap 600 after the close of trading on Thursday, September 19. Apax Partners is acquiring Rue 21 in a deal expected to be completed on or about that date pending final approvals.

Vertex Pharmaceuticals engages in discovering, developing, manufacturing, and commercializing small molecule drugs. Headquartered in Cambridge, MA, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Biotechnology Sub-Industry index.

Ametek manufactures and sells electronic instruments and electromechanical devices. Headquartered in Berwyn, PA, the company will be added to the S&P MidCap 400 GICS Electrical Components & Equipment Sub-Industry index.

Advanced Micro Devices operates as a semiconductor company. Headquartered in Sunnyvale, CA, the company will be added to the S&P MidCap 400 GICS Semiconductors Sub-Industry index.

SAIC provides scientific, engineering, systems integration, and technical services and solutions. Headquartered in McLean, VA, the company will be added to the S&P MidCap 400 GICS IT Consulting & Other Services Sub-Industry index.

Capstead Mortgage, a real estate investment trust (REIT), invests in a portfolio of residential mortgage pass-through securities. Headquartered in Dallas, TX, the company will be added to the S&P SmallCap 600 GICS Mortgage REITs 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.

About S&P Dow Jones Indices
S&P Dow Jones Indices LLC, a part of McGraw Hill Financial, is the world's largest, global resource for index-based concepts, data and research. Home to iconic financial market indicators, such as the S&P 500® and the Dow Jones Industrial Average™, S&P Dow Jones Indices LLC has over 115 years of experience constructing innovative and transparent solutions that fulfill the needs of investors. More assets are invested in products based upon our indices than any other provider in the world. With over 830,000 indices covering a wide range of asset classes across the globe, S&P Dow Jones Indices LLC defines the way investors measure and trade the markets. To learn more about our company, please visit www.spdji.com.  

Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC, a part of McGraw Hill Financial. Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC ("Dow Jones").  These trademarks have been licensed to S&P Dow Jones Indices LLC. It is not possible to invest directly in an index. S&P Dow Jones Indices LLC, Dow Jones, S&P and their respective affiliates (collectively "S&P Dow Jones Indices") do not sponsor, endorse, sell, or promote any investment fund or other investment vehicle that is

offered by third parties and that seeks to provide an investment return based on the performance of any index. This document does not constitute an offer of services in jurisdictions where S&P Dow Jones Indices does not have the necessary licenses. S&P Dow Jones Indices receives compensation in connection with licensing its indices to third parties.

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