TRA Terra Industries, Inc.

NEW YORK, April 5 /PRNewswire/ -- S&P SmallCap 600 constituent The Dress Barn Inc. (Nasdaq: DBRN) will replace Terra Industries  Inc. (NYSE: TRA) in the S&P MidCap 400 index, and NorthWestern Corp. (NYSE: NWE) will replace The Dress Barn in the S&P SmallCap 600 index after the close of trading on Friday, April 9.  Terra Industries is being acquired by S&P 500 constituent CF Industries Holdings Inc. (NYSE: CF) in an exchange offer expected to be completed on or about that date, pending final results.

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

Dress Barn operates a chain of women's apparel specialty stores. Headquartered in Suffern, NY, the company will be added to the S&P MidCap 400 GICS (Global Industry Classification Standard) Apparel Retail Sub-Industry index.  

NorthWestern provides electricity and natural gas to residential, commercial, and industrial customers in Montana, South Dakota, and Nebraska. Headquartered in Sioux Falls, SD, the company will be added to the S&P SmallCap 600 GICS Multi-Utilities Sub-Industry index.  

Following is a summary of the changes:

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SOURCE Standard & Poor's