Besen & Associates Inc. hired Matthew Slonim as investment analyst to head the firm’s Real Estate Investment Analysis & Research Group. Slonim and the newly created group will be responsible for assisting potential buyers with market analysis, financial analysis, and due diligence. Prior to joining Besen & Associates, Slonim spent several years working in corporate finance at SG Cowen and The Bank of New York. Prior to investment banking, he spent three years as a research analyst at NERA, a division of Mercer Consulting.