NEW YORK, Oct. 16 /PRNewswire/ -- Standard & Poor's will make the following changes to the S&P 500, S&P MidCap 400 and S&P SmallCap 600 indices after the close of trading on Tuesday, October 21:

• The NASDAQ OMX Group Inc (Nasdaq: NDAQ) will replace Dillard's Inc. (NYSE: DDS) in the S&P 500. As of today's close, Dillard's market value ranked 500th in the index.

• Comstock Resources Inc. (NYSE: CRK) will replace Entercom Communications Corp. (NYSE: ETM) in the S&P MidCap 400. As of today's close, Entercom Communications' market value ranked 400th in the index.

• EMS Technologies Inc. (Nasdaq: ELMG) will replace Radio One Inc. (Nasdaq: ROIAK), and Integral Systems Inc. (Nasdaq: ISYS) will replace Fleetwood Enterprises Inc. (NYSE: FLE) in the S&P SmallCap 600. As of today's close, Radio One and Fleetwood Enterprises had market capitalizations of approximately $22 million and $39 million respectively, whereas the minimum market capitalization necessary to be considered for inclusion in the index is $250 million.

Standard & Poor's will monitor these transactions, and post any relevant updates on its website: www.standardandpoors.com.

The NASDAQ OMX Group is a provider of securities listing, trading, and information products and services and also provides technology solutions to exchanges and other marketplaces. Headquartered in New York, NY, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Specialized Finance Sub-Industry index.

Comstock Resources is engaged in the acquisition, development, production and exploration of oil and natural gas. Headquartered in Frisco, TX, the company will be added to the S&P MidCap 400 GICS Oil & Gas Exploration & Production Sub-Industry index.

EMS Technologies designs, manufactures, and markets wireless communications solutions. Headquartered in Norcross, GA, the company will be added to the S&P SmallCap 600 GICS Communications Equipment Sub-Industry index.

Integral Systems builds satellite ground systems and equipment for command and control, integration and test, data processing and simulation. Headquartered in Lanham, MD, the company will be added to the S&P SmallCap 600 GICS IT Consulting & Other Services Sub-Industry index.

Following is a summary of the changes:

                       S&P 500 INDEX   - October 21, 2008

                 COMPANY           GICS ECONOMIC             GICS
                                      SECTOR             SUB-INDUSTRY
     ADDED   The NASDAQ OMX
                  Group             Financials        Specialized Finance

     DELETED   Dillard's            Consumer
                                  Discretionary        Department Stores

                          S&P MIDCAP 400 INDEX   - October 21, 2008

                    COMPANY          GICS ECONOMIC              GICS
                                         SECTOR             SUB-INDUSTRY

      ADDED   Comstock Resources          Energy             Oil & Gas
                                                            Exploration &
                                                             Production
      DELETED      Entercom              Consumer
                 Communications         Discretionary        Broadcasting

                      S&P SMALLCAP 600 INDEX    -  October 21, 2008

                       COMPANY           GICS ECONOMIC          GICS
                                           SECTOR            SUB-INDUSTRY

      ADDED             EMS              Information         Communications
                    Technologies          Technology            Equipment

                     Integral           Information        IT Consulting &
                      Systems            Technology         Other Services

      DELETED        Radio One            Consumer
                                       Discretionary        Broadcasting

                     Fleetwood            Consumer            Automobile
                    Enterprises         Discretionary        Manufacturers

Additions to and deletions from an S&P equity index do not in any way reflect an opinion on the investment merits of the companies concerned.

About Standard & Poor's Index Services

Standard & Poor's Index Services, the world's leading index provider, maintains a wide variety of investable and benchmark indices to meet an array of investor needs. Its family of indices includes the S&P 500, an index with $1.5 trillion invested and $4.85 trillion benchmarked, and the S&P Global 1200, a composite index comprised of seven regional and country headline indices. For more information, please visit www.standardandpoors.com/indices.

About Standard & Poor's

Standard & Poor's, a division of The McGraw-Hill Companies (NYSE: MHP), is the world's foremost provider of financial market intelligence, including independent credit ratings, indices, risk evaluation, investment research and data. With approximately 8,500 employees, including wholly owned affiliates, located in 23 countries and markets, Standard & Poor's is an essential part of the world's financial infrastructure and has played a leading role for more than 140 years in providing investors with the independent benchmarks they need to feel more confident about their investment and financial decisions. For more information, visit http://www.standardandpoors.com.

SOURCE Standard & Poor's