The addition brings the company’s aggregate buyback authorization up to $6 billion—good for nearly 1.8B shares at the 7/15 closing price of $3.38. Sirius XM said its board approved an additional $2 billion common stock repurchase program. Shares of common stock may be purchased from time to time on the open market and in privately negotiated transactions, including in accelerated stock repurchase transactions and transactions with Liberty Media (LMDIA) and its affiliates.