Organon Set to Join S&P 500; HollyFrontier to Join S&P MidCap 400; Service Properties Trust to Join S&P SmallCap 600

Organon & Co. will be added to the S&P 500 prior to the open of trading on Thursday, June 3 replacing HollyFrontier, which will be removed from the S&P 500 effective prior to the open of trading on Friday, June 4 . HollyFrontier will replace Service Properties Trust in the S&P MidCap 400, and Service Properties Trust will replace Lannett Co Inc. in the S&P SmallCap 600 also effective prior to the open on June 4 . …

– Organon & Co. (NYSE: OGN) will be added to the S&P 500 prior to the open of trading on Thursday, June 3 replacing HollyFrontier, which will be removed from the S&P 500 effective prior to the open of trading on Friday, June 4 .

HollyFrontier will replace Service Properties Trust (NASD:SVC) in the S&P MidCap 400, and Service Properties Trust will replace Lannett Co Inc. (NYSE:LCI) in the S&P SmallCap 600 also effective prior to the open on June 4 . S&P 500 and 100 constituent Merck & Co (NYSE: MRK) is spinning off Organon (NYSE: OGN) in a transaction expected to be completed post close on Wednesday, June 2 . Post spin-off, Merck will remain in the S&P 500 and 100 indices. HollyFrontier has a market capitalization more representative of the mid-cap market space. Lannett is no longer representative of the small-cap market space.

Following is a summary of the changes that will take place prior to the open of trading on the effective date:

Effective Date	Index Name	Action	Company Name	Ticker	GICS Sector
June 3, 2021	S&P 500	Addition	Organon	OGN	Health Care
June 4, 2021	S&P 500	Deletion	HollyFrontier	HFC	Energy
	S&P MidCap 400	Addition	HollyFrontier	HFC	Energy
	S&P MidCap 400	Deletion	Service Properties Trust	SVC	Real Estate
	S&P SmallCap 600	Addition	Service Properties Trust	SVC	Real Estate
	S&P SmallCap 600	Deletion	Lannett Co	LCI	Health Care

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