BlueMountain Capital Management has been shedding shares in Overseas Shipholding Group (OSG).

The Andrew Feinstein-led alternative asset manager has cut its stake to 15.6%, according to a filing with the US Securities & Exchange commission (SEC).

TradeWinds reported in December that the firm had a 17.7% holding in the New York-listed tanker owner.

New York-based BlueMountain reported today that it sold nearly 909,000 OSG shares between 14 March and 18 March alone.