Steel Dynamics Set to Join S&P 500; Super Micro Computer to Join S&P MidCap 400

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Dec 19, 2022, 18:35 ET

NEW YORK, Dec. 19, 2022 /PRNewswire/ -- S&P MidCap 400 constituent Steel Dynamics Inc. (NASD:STLD) will replace Abiomed Inc. (NASD:ABMD) in the S&P 500 and Super Micro Computer Inc. (NASD:SMCI) will replace Steel Dynamics in the S&P MidCap 400 effective prior to the opening of trading on Thursday, December 22. S&P 500 constituent Johnson & Johnson (NYSE: JNJ) is acquiring Abiomed in a deal expected to close soon pending final conditions.

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
December 22, 2022	S&P 500	Addition	Steel Dynamics	STLD	Materials
	S&P 500	Deletion	Abiomed	ABMD	Health Care
	S&P MidCap 400	Addition	Super Micro Computer	SMCI	Information Technology
	S&P MidCap 400	Deletion	Steel Dynamics	STLD	Materials

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