Entegris Inc. (NASD: ENTG) will replace Arcadium Lithium plc (NYSE: ALTM) in the S&P MidCap 400 effective prior to the opening of trading on Thursday, March 6. Rio Tinto plc (ASX: RIO) is ...

Entegris, Inc. engages in the development, manufacture, and supply of specialty materials for the microelectronics industry. It operates through the following segments: Materials Solutions (MS ...

(RTTNews) - S&P Dow Jones Indices, a division of S&P Global (SPGI), said that Entegris Inc. (ENTG) will replace Arcadium Lithium plc (ALTM) in the S&P MidCap 400 effective prior to the opening of ...