https://about.att.com/story/2022/close-warnermedia-transaction.html
Warner Bros. Discovery to Begin Trading on the Nasdaq as “WBD” on Monday, April 11
NEW YORK and DALLAS, April 8, 2022 — Today Discovery, Inc. and AT&T Inc.* (NYSE:T) announced that they have closed their transaction to combine the WarnerMedia business with Discovery. The combination creates a premier standalone global media and entertainment company, Warner Bros. Discovery, Inc., which will begin trading on the Nasdaq with the start of trading on Monday, April 11, under the new ticker symbol “WBD.”