Siemens Energy shares slumped as much as 36% on Thursday after the company said it was seeking German government guarantees, as the company’s wind turbine business…

The initial version of this article featured an incorrect number for Texas Instruments’ analog revenue. This has now been corrected. Texas Instruments Inc. shares fell in…

Shares of Pfizer Inc. and other biotech drug makers fell in the extended session Friday after Pfizer slashed $9 billion in expected sales from its full-year…

Facebook shares fell in premarket trading on Monday, after Diageo and Starbucks became the latest companies to halt advertising on social media platforms over ineffective policing…