David Einhorn's Greenlight Capital says a bear market in stocks has already started, and that they're making a handful of ...

"If you can nail that type of investing, there are great rewards for it," one former portfolio manager said.

Qube Research & Technologies disclosed a $105-million short position in Trump Media & Technology Group on Monday.

Hedge fund Qube Research & Technologies disclosed a roughly $105 million short position in Trump Media & Technology Group on ...