Shares of investment firm Apollo Global Management and workplace cloud-services platform Workday rallied after hours on Friday, after S&P Dow Jones Indices said the two companies would join the S&P 500 index later this month.

Apollo Global Management and Workday will join the benchmark S&P 500 later this month, S&P Dow Jones Indexes said Friday. Apollo Global Management (APO) and Workday (WDAY) will replace Qorvo (QRVO) and Amentum (AMTM),

Workday and Apollo Group will join the S&P 500 before the open on Dec. 23. The two stocks jumped Friday night.

Apollo Global Management and Workday will be added to the S&P 500 prior to the start of trading on Dec. 23 in conjunction with the index’s quarterly rebalancing. The two companies will replace Qorvo and Amentum Holdings,