Charles River Laboratories (CRL) to Join S&P 500; Others to Join S&P MidCap 400 and S&P SmallCap 600 (NSA) (EFC) (AZPN) (AEGN)

May 10, 2021 5:17 PM EDT

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(Updated - May 10, 2021 5:18 PM EDT)

Charles River Laboratories (NYSE: CRL) to Join S&P 500

S&P Dow Jones Indices will make the following changes to the S&P 500, S&P MidCap 400, and S&P SmallCap 600:

 S&P MidCap 400 constituent Charles River Laboratories International (NYSE: CRL) will replace FLIR Systems Inc. (NASDAQ: FLIR) in the S&P 500, S&P SmallCap 600 constituent National Storage Affiliates Trust (NYSE: NSA) will replace Charles River Laboratories International in the S&P MidCap 400, and Ellington Financial Inc. (NYSE: EFC) will replace National Storage Affiliates Trust in the S&P SmallCap 600 effective prior to the opening of trading on Friday, May 14. S&P 500 constituent Teledyne Technologies Inc. (NYSE: TDY) is acquiring FLIR Systems in a deal to be completed soon pending final closing conditions. 

Aspen Technology Inc. (NASDAQ: AZPN) will replace Avanos Medical Inc. (NYSE: AVNS) in the S&P MidCap 400, and Avanos Medical will replace Aegion Corp. (NASDAQ: AEGN) in the S&P SmallCap 600 effective prior to the opening of trading on Monday, May 17. New Mountain Capital LLC is acquiring Aegion in a deal expected to be completed soon pending final closing conditions.



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