Twilio joins S&P 500 as Warner Bros Discovery exits ahead of Paramount merger

Twilio will join the S&P 500 index, replacing Warner Bros Discovery, which is set to merge with Paramount.

The change follows the index's regular review of company eligibility.

For beginners Joining a major index like the S&P 500 typically brings automatic buying from index funds, while removal can trigger selling as those funds adjust their holdings.