S&P Dow Jones Indices Says After AT&T Spinoff Of WarnerMedia, The New Company, Named Warner Bros. Discovery (Ticker WBD) Will Remain In S&P 500; Says AT&T Will Also Remain In S&P 500 And 100 Indices
https://www.spglobal.com/spdji/en/documents/indexnews/announcements/20220407-1451476/1451476_attspinwbd5.pdf