Apollo Global Management and Workday will be added to the 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 which will move to the index, according to a press release from S&P Dow Jones Indices. There was considerable speculation before the announcement at 5:15 ET whether S&P Dow Jones Indices would add any companies to the S&P 500 in conjunction with the rebalancing and, if so, which would join.