NEW YORK, Sept. 21, 2015 /PRNewswire/ -- S&P Dow Jones Indices will make the following changes to the S&P MidCap 400 and S&P SmallCap 600 indices:

• S&P MidCap 400 constituent SPX Corp. (NYSE: SPW) will replace DealerTrack Technologies Inc. (NASD: TRAK) in the S&P SmallCap 600, S&P SmallCap 600 constituent The Toro Co. (NYSE: TTC) will replace SPX in the S&P MidCap 400 and Core-Mark Holding Company Inc. (NASD: CORE) will replace Toro in the SmallCap 600 after the close of trading on Thursday, September 24. Cox Automotive is acquiring DealerTrack Technologies in a deal expected to be completed soon pending final approvals.

• SPX FLOW Inc. (NYSE: FLOWwi) will replace Christopher & Banks Corp. (NYSE: CBK) in the S&P SmallCap 600 after the close of trading on Friday, September 25. New S&P SmallCap 600 constituent SPX Corp. (NYSE: SPW) is spinning off SPX FLOW to shareholders in a deal expected to be completed on or about that date. Christopher & Banks is ranked near the bottom of the S&P SmallCap 600 and is no longer appropriate for that index.

SPX provides specialized engineered solutions.  Headquartered in Charlotte, NC, the company will be added to the S&P SmallCap 600 GICS (Global Industry Classification Standard) Industrial Machinery Sub-Industry index.

The Toro Company designs, manufactures, and markets professional turf maintenance equipment and services. Headquartered in Bloomington, MN, the company will be added to the S&P MidCap 400 Agricultural & Farm Machinery Sub-Industry index.

Core-Mark Holding markets fresh and broad-line supply solutions to the convenience retail industry. Headquartered in South San Francisco, CA, the company will be added to the S&P SmallCap 600 GICS Distributors Sub-Industry index.

SPX FLOW provides engineered technologies and services. Headquartered in Charlotte, NC, the company will be added to the S&P SmallCap 600 GICS Industrial Machinery Sub-Industry index.

Following is a summary of the changes:

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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SOURCE S&P Dow Jones Indices