Investment firm Blackstone has added to the leadership team of its global credit platform, GSO Capital Partners (GSO). Bob Carroll has been hired as a managing director and head of distressed trading. He will oversee all trading activity related to GSO’s expansive public distressed efforts.

Carroll most recently worked with hedge fund Smith Cove Capital, where he was responsible for all trading activity. Before that, he spent 10 years at Perry Capital as head of trading. Previously, Carroll was a trader at Litespeed Partners and Imperial Capital.

GSO also announced that Adam Maitin joined the trading desk as a vice president. Adam joins from BlueMountain Capital where he spent two years trading high-yield, distressed and investment-grade credit. Before his stint at BlueMountain, Maitin was an associate at Alliance Bernstein.