Gregory Lewis Managing Director BTIG Gregory Lewis, CFA, is a Managing Director and BTIG covering the Maritime and Energy Sector. Prior to BTIG, Mr. Lewis spent eleven years at Credit Suisse, where he held similar roles including Global Head of Maritime Research. Previously, he was a Shipping and Oil Services Analyst at Fortis Bank. Earlier in his career, Mr. Lewis worked as an Ocean Engineer. He earned a BS in ocean engineering from the University of Rhode Island.