NEW YORK, March 3, 2016 /PRNewswire/ -- S&P MidCap 400 constituent UDR Inc. (NYSE: UDR) will replace Keurig Green Mountain Inc. (NASD: GMCR) in the S&P 500, S&P SmallCap 600 constituent Healthcare Realty Trust Inc. (NYSE: HR) will replace UDR in the S&P MidCap 400, and Proto Labs Inc. (NYSE: PRLB) will replace Healthcare Realty Trust in the S&P SmallCap 600 after the close of trading on Friday, March 4. JAB Holding Company acquired Keurig Green Mountain in a deal that was completed today.

UDR, a real estate investment trust (REIT), owns, operates, acquires, renovates, develops, and manages multifamily apartment properties. Headquartered in Highlands Ranch, CO, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Residential REITs Sub-Industry index.

Healthcare Realty Trust, a real estate investment trust (REIT), develops, owns, leases and finances properties associated with delivery of healthcare services. Headquartered in Nashville, TN, the company will be added to the S&P MidCap 400 Healthcare REITs Sub-Industry index.

Proto Labs operates as an online and technology-enabled manufacturer of custom parts for prototyping and short-run production. Headquartered in Maple Plain, MN, 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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