Sprintundefined was down 3.9% in late morning after it posted first-quarter earnings of 36 cents a share including a 1-cent-a-share gain from investments. The Street expected 37 cents. The telecommunications company's revenue slipped 1% vs. a year ago.
Sprint said it sees full-year earnings coming in 10% to 15% below the analysts' consensus.
, the company's mobile phone unit, posted a first-quarter loss of 40 cents a share. Analysts had expected a loss of 37 cents a share.