Qualcomm Inc. announced a new $10 billion share-repurchase plan late Wednesday, sending shares up almost 3% in after-hours trading. The chip maker said there is no expiration date for the repurchase plan, which replaces a $15 billion repurchase authority established in 2015 that has $1.2 billion remaining. Qualcomm is laying off employees in a bid to slash costs after a merger attempt by Broadcom Inc. was blocked by President Donald Trump. Qualcomm stock has declined 17% so far this year, as the S&P 500 index has fallen less than 0.1%.