Market Trends Entegris set to join S&P MidCap 400, shares up 6% in aftermarket trading (ENTG:NASDAQ)By admin8996erT0allFebruary 28, 2025 Entegris (NASDAQ:ENTG) will replace Arcadium Lithium (ALTM) in the S&P MidCap 400 effective prior to the opening of trading on…