Hedge fund investor David Einhorn took a victory lap after a long-held Tesla short position boosted returns for Greenlight Capital last quarter.
The slowing of the Chinese economy along with European growth under pressure cast a big cloud of uncertainty, Mohammed El-Erian says.
Tesla CEO Elon Musk who is known for creating controversies via tweets, has "room for improvement," billionaire investor Warren Buffett has said.
Billionaire investor Ray Dalio has a message for America: Capitalism isn't working for most people and is in dire need of reform.