An AT&T store in New York, US, on Monday, Oct. 21, 2024. AT&T Inc. is scheduled to release earnings figures on October 23. Photographer: Gabby Jones/Bloomberg AT&T Inc. sold $5 billion of investment-grade debt on Thursday, weeks after it agreed to a$23 billion investment to expand its network. The telecommunications company offered notes in four parts, according to a person familiar with the matter. The longest portion of the deal, a 29-year note, yields around 1 percentage point over Treasuries, the pe ...