Entegris Inc to Join S&P MidCap 400 Index

Entegris Inc will join the S&P MidCap 400 index, replacing Arcadium Lithium, which is being acquired by Rio Tinto plc. This change is scheduled to take effect prior to the opening of trading on March 6.

Index Replacement Details

• Entegris Inc will replace Arcadium Lithium in the S&P MidCap 400 index.
• The change is set to take effect prior to the opening of trading on March 6.

Impact on Entegris’ Stock Price

Entegris’ stock has experienced a notable increase in aftermarket trading following the announcement. The inclusion in the S&P MidCap 400 index is expected to have a positive impact on the company’s stock price.

Key Dates

• March 6: Change to take effect prior to the opening of trading.