Leo Mariani, CFA

Managing Director, Senior Research Analyst



Mr. Mariani, CFA, is a Managing Director, Senior Research Analyst at ROTH MKM. Before Roth Capital Partners' acquisition in 2023, he joined MKM Partners in June of 2022 from Key Banc Capital Markets. He spent three and a half years covering the Oil and Gas Exploration and Production sector and selecting Renewable Energy names. He's been covering the E&P industry for 24 years, with 19 years in equity research and just under five years in investment banking. He was a senior E&P analyst for RBC Capital Markets for nearly ten years and also spent time at Jefferies and NatAlliance Securities. In addition, he worked for both PaineWebber and UBS on the investment banking side, covering all energy industry and utilities subsectors.

Mr. Mariani was the #2 stock picker globally according to TipRanks in 2021 and the #2 stock picker in the energy sector in 2007, according to the Wall St. Journal's Best on the Street survey.

Mr. Mariani graduated with honors from Brown University with a double major in Business Economics and Organizational Behavior and Management.

Mr. Mariani is a chartered financial analyst (CFA).


Joined Roth

February 2023

Sector Focus



A.B. from Brown University


MKM Partners; Key Banc Capital Markets; NatAlliance Securities; RBC Capital Markets; Jefferies; UBS; PaineWebber