NEW YORK (TheStreet) -- AT&T edged lower Thursday, despite a report that its rival T-Mobile is likely to lose its request to gain an opportunity to bid on more spectrum for its channels. Sirius XM Holdings tumbled after a court awarded class-action status to plaintiffs in a copyright lawsuit. AT&T fell 0.43% to close at $34.80. Must Read: 10 Stocks Billionaire John Paulson Loves Regulators with the Federal Communications Commission are likely to reject T-Mobile's request for more spectrum to be allocated to smaller wireless carriers such as itself when a spectrum auction is held next year, according to a Reuters report.