Restoration Hardware To Join S&P MidCap 400 Index

S&P Dow Jones Indices announced after Monday's market close that Restoration Hardware Holdings Inc (NYSE: RH) will be added to the S&P MidCap 400 index after Wednesday's market close.

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Restoration Hardware will replace Atmel Corporation (NASDAQ: ATML) in the index, as Atmel's will be fully acquired by Microchip Technology Inc. (NASDAQ: MCHP) prior to Wednesday's scheduled index change.

Shares of Restoration Hardware were trading higher by nearly 3 percent early Tuesday morning.