NEW YORK, Jan. 16, 2014 /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 effective after the close of trading on Thursday, January 23:


    --  S&P MidCap 400 constituent Tractor Supply Co. (NASD:TSCO) will replace
        Life Technologies Corp. (NASD:LIFE) in the S&P 500, S&P SmallCap 600
        constituent Align Technology Inc. (NASD:ALGN) will replace Tractor
        Supply in the S&P MidCap 400 and Roadrunner Transportation Systems Inc.
        (NYSE:RRTS) will replace Align Technology in the S&P SmallCap 600. Life
        Technologies is being acquired by S&P 500 constituent Thermo Fisher
        Scientific Inc. (NYSE:TMO) in a deal expected to be completed soon
        pending final approvals. Tractor Supply has a market capitalization that
        is more representative of the large cap market space.  Align Technology
        is the top ranked company in the S&P SmallCap 600 as measured by market
        capitalization.
    --  Boise Cascade Co. (NYSE:BCC) will replace ViroPharma Inc. (NASD:VPHM) in
        the S&P SmallCap 600. Shire plc is acquiring ViroPharma in a deal
        expected to be completed soon pending final approvals.

Tractor Supply operates retail farm and ranch stores. Headquartered in Brentwood, TN, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Specialty Stores Sub-Industry index.

Align Technology operates as a medical device company. Headquartered in San Jose, CA, the company will be added to the S&P MidCap 400 GICS Health Care Supplies Sub-Industry index.

Roadrunner Transportation Systems provides asset-light transportation and logistics services. Headquartered in Cudahy, WI, the company will be added to the S&P SmallCap 600 GICS Trucking Sub-Industry index.

Boise Cascade manufactures wood products and distributes building materials. Headquartered in Boise, ID, the company will be added to the S&P SmallCap 600 GICS Forest Products Sub-Industry index.

Following is a summary of the changes:



                     S&P 500 INDEX - January 23, 2014
                     --------------------------------

                  COMPANY              GICS ECONOMIC SECTOR     GICS SUB-INDUSTRY
                  -------              --------------------     -----------------

      ADDED    Tractor Supply         Consumer Discretionary    Specialty Stores
      -----    --------------         ----------------------    ----------------

     DELETED Life Technologies             Health Care         Life Science Tools &
                                                                     Services
     -------     -----------------                ----------- --------------------


                 S&P MIDCAP 400 INDEX - January 23, 2014
                 ---------------------------------------

                 COMPANY             GICS ECONOMIC SECTOR    GICS SUB-INDUSTRY
                 -------             --------------------    -----------------

      ADDED  Align Technology            Health Care       Health Care Supplies
      -----  ----------------            -----------       --------------------

     DELETED  Tractor Supply        Consumer Discretionary   Specialty Stores
     -------  --------------        ----------------------   ----------------


                        S&P SMALLCAP 600 INDEX - January 23, 2014
                        -----------------------------------------

                     COMPANY              GICS ECONOMIC SECTOR     GICS SUB-INDUSTRY
                     -------              --------------------     -----------------

      ADDED  Roadrunner Transportation
                      Systems                  Industrials              Trucking
      -----   -------------------------        -----------              --------

                  Boise Cascade                 Materials           Forest Products
                  -------------                 ---------           ---------------

     DELETED     Align Technology              Health Care        Health Care Supplies
     -------     ----------------              -----------        --------------------

                    ViroPharma                 Health Care          Pharmaceuticals
                    ----------                 -----------          ---------------

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 LLC