Stocks making the biggest moves after hours: Boeing, Texas Instruments, CSX, Intuitive Surgical and more

There had been speculation that Trump might replace Barr after he takes office Jan. 20.

Apple and CEO Tim Cook will announce new versions of its operating systems for iPhones, iPads, Macs, TV and Watch.

Berkshire Hathaway’s strong quarterly earnings report prompted a slew of Wall Street analysts to raise their price targets on the conglomerate’s stock.