Extra Space Storage Set to Join the S&P MidCap 400; Dorman Products & Era Group to Join S&P SmallCap 600

  Extra Space Storage Set to Join the S&P MidCap 400; Dorman Products & Era
                        Group to Join S&P SmallCap 600

PR Newswire

NEW YORK, Jan. 23, 2013

NEW YORK, Jan. 23, 2013 /PRNewswire/ -- S&P Dow Jones Indices will make the
following changes to the S&P MidCap 400 and the S&P SmallCap 600 indices:

  o S&P SmallCap 600 constituent Extra Space Storage Inc. (NYSE: EXR) will
    replace Ralcorp Holdings Inc. (NYSE: RAH) in the S&P MidCap 400, and
    Dorman Products Inc. (NASDAQ: DORM) will replace Extra Space Storage in
    the S&P SmallCap 600 after the close of trading on Tuesday, January 29.
    S&P 500 constituent ConAgra Foods Inc. (NYSE: CAG) is acquiring Ralcorp in
    a deal expected to be completed on or around that date, pending final
    approvals.
  o Era Group Inc. (NYSE: ERAwi) will replace Neutral Tandem Inc. (NYSE: IQNT)
    in the S&P SmallCap 600 after the close of trading on Thursday, January
    31. S&P SmallCap 600 constituent SEACOR Holdings Inc. (NYSE: CKH) is
    spinning off Era Group to shareholders in a transaction expected to be
    completed on or about that date. Neutral Tandem has a market
    capitalization below $100 million and is no longer representative of the
    small cap market space.

Extra Space Storage is a real estate investment trust (REIT) that owns,
develops, acquires and operates self-storage properties. Headquartered in Salt
Lake City, Utah, the company will be added to the S&P MidCap 400 GICS (Global
Industry Classification Standard) Specialized REITs Sub-Industry index.

Dorman Products supplies automotive replacement parts, fasteners, and service
line products. Headquartered in Colmar, PA, the company will be added to the
S&P SmallCap 600 GICS Auto Parts & Equipment Sub-Industry index.

Era Group provides helicopter transportation services. Headquartered in
Houston, TX, the company will be added to the S&P SmallCap 600 GICS Oil & Gas
Equipment & Services Sub-Industry index.

Following is a summary of the changes:

S&P MIDCAP 400 INDEX – January 29, 2013
        COMPANY         GICS ECONOMIC SECTOR       GICS SUB-INDUSTRY
ADDED   Extra Space     Financials                 Specialized REITs
        Storage
DELETED Ralcorp         Consumer Staples           Packaged Foods & Meats
S&P SMALLCAP 600 INDEX – January 29, 2013
        COMPANY         GICS ECONOMIC SECTOR       GICS SUB-INDUSTRY
ADDED   Dorman Products Consumer Discretionary     Auto Parts & Equipment
DELETED Extra Space     Financials                 Specialized REITs
        Storage
S&P SMALLCAP 600 INDEX – January 31, 2013
        COMPANY         GICS ECONOMIC SECTOR       GICS SUB-INDUSTRY
ADDED   Era Group       Energy                     Oil & Gas Equipment &
                                                   Services
DELETED Neutral Tandem  Telecommunication Services Alternative Carriers

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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Communications
S&P Dow Jones Indices
dave_guarino@spdji.com
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David Blitzer
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S&P Dow Jones Indices
david_blitzer@spdji.com
(917) 376-1204

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