Here are Tuesday's top research calls, including upgrades for Biogen and Caterpillar, and increased price targets for Apple and Micron.

SunEdison's yieldcos TerraForm Global (GLBL) and TerraForm Power (TERP) said they are looking at strategic options such as a sale.

The move came after Brookfield and Appaloosa said they planned to bid for TerraForm Power's B shares owned by bankrupt SunEdison Inc.

TerraForm Global (GLBL) is in talks with bankrupt SunEdison (SUNEQ) to sell the latter’s controlling stake in the company.

The financial vehicles created by utility providers are meant to stand alone financially but they lack the power to grow if their parent fails.

This will not be a common stock play out of bankruptcy, TheStreet's founder said Thursday, meaning it's time to cut your losses on the yieldco operator.

With its stock having plummeted more than 99% over the last year, the troubled renewable energy company filed for Chapter 11 protection.

TerraForm Global (GLBL) stock fell today after suing its parent company SunEdison (SUNE) and as SunEdison will reportedly seek bankruptcy protection.

TerraForm Global (GLBL) stock is surging in early-afternoon trading on Thursday after its CEO abruptly left the company.

The online retail giant had a plan to own your living room. It didn't work because AI-powered voice assistants don't work.

Online scams are more widespread than ever. Here's how to avoid them.

Tesla's competitors have made progress in cutting the EV leader's market share.