Dedicated Team

Nessim Mezrahi | Founder and Principal

Babson College

B.S. Finance and Entrepreneurship, 2004 cum laude
Honors Program Graduate

Mr. Nessim Mezrahi is an expert in financial and securities class action litigation. Nessim has assisted counsel with expert testimony and specialized litigation support services in several securities class action matters and complex financial litigation engagements. RSA Group has successfully assisted counsel attain class certification and settlements in more than a dozen complex and multi-district securities class action cases. Previously, Nessim was the founding Principal of Nathan Associates’ Financial Litigation practice in Arlington, VA. Earlier in his career, Nessim assisted counsel with the assessment and computation of damages as an Analyst at The Michel-Shaked Group in Boston, MA. Nessim attained his financial and corporate accounting acumen at the Financial Management Program (FMP) at GE Capital in Stamford, CT, where he focused in corporate accounting, controllership, credit card and mortgage securitization. Nessim worked for GE’s Corporate Audit Staff (CAS) where he engaged in Sarbanes-Oxley Audit Reviews (302, 401, and 404) focused on the design and effectiveness of internal controls over financial reporting. Nessim is a Category 2 cyclist and enjoys racing his bike with the Otterhaus Racing Team. He represented the Maccabi USA Cycling Team at the 2013 Maccabiah games in Israel. Mr. Mezrahi was born in Bogota, Colombia and attended and graduated from Choate Rosemary Hall in Wallingford, CT. Mr. Mezrahi is fluent in Spanish and lives in Bethesda, MD with his wife and two kids.  

Stephen E. Christophe, Ph.D.  |  Affiliated Expert

University of North Carolina, Chapel Hill

Ph.D. in Finance, 1992

The College of William and Mary

M.B.A. in Finance, 1982

Colby College

A.B. in Economics, 1980

Dr. Stephen Christophe has been qualified as an expert witness in U.S. District Courts in the following areas: securities class action litigation (market efficiency). He is Professor of Finance at George Mason University and was previously a faculty member at the Kenan-Flagler Business School at the University of North Carolina at Chapel Hill, and the Eli Broad College of Business at Michigan State University. Dr. Christophe has more than twenty years of academic experience and his research focuses on security valuation, the trading behavior of market participants, and the impact of short selling on financial markets. He has published articles in journals including the Journal of Business, Journal of Finance, Journal of Financial Economics, Journal of Portfolio Management, Financial Analysts Journal, and the Journal of Investing. In 2008, he earned the Best Paper Award (Investments) at the FMA European Conference for “Informed Trading Before Analyst Downgrades: Evidence from Short Sellers”. His article “Short Selling and the Weekend Effect in NASDAQ Stock Returns,” was named the 2009 Outstanding Publication in the Financial Review.

Michael G. Ferri, Ph.D. | Affiliated Expert

University of North Carolina, Chapel Hill

Ph.D. in Economics, 1975

University of Notre Dame

M.A. in Philosophy, 1969

Xavier University

A.B. in Philosophy, 1967

Dr. Michael G. Ferri has been qualified as an expert witness in the U.S. District Courts in the following areas: securities class action litigation (market efficiency of bonds and asset-backed securities). Dr. Ferri was the George Mason University Foundation Chair in Finance at George Mason University. He also taught at the Darden Graduate School of Business at the University of Virginia, John Carroll University, the University of South Carolina, and the University of Kentucky. Between 1988 and 1997, he was a Member of the NASD Board of Arbitrators; between 1994 and 1997, he was a Member of the Board of Directors of the Philadelphia Board of Trade. Also, in 1997-1998, Dr. Ferri was selected as a Senior Research Scholar for the Securities and Exchange Commission. In 2000-2001, he served as a Vice-President for Economic Research and Deputy Chief Economist of the NASDAQ Stock Market. He became a Member of the NASDAQ Economic Advisory Board in 2001 and served until 2003. He has published numerous academic articles related to a variety of topics, such as stock market reactions to earnings announcements and short selling. In addition, he co-authored several editions of Foundations of Financial Markets and Institutions with Frank Fabozzi and Franco Modigliani. In 2008, he earned the Best Paper Award (Investments) at the FMA European Conference in Prague. Dr. Ferri has over 20 years of experience as an expert witness.

Joel Finard | Affiliated Expert

Columbia University

M.A. in Economics, 1983, M.Phil.(ABD) in Economics, 1985

University of Massachusetts at Amherst

B.A. in Economics, 1981 magna cum laude

Chartered Financial Analyst (CFA), 1981

Mr. Joel Finard has been qualified and testified as an expert witness in U.S. District Courts, U.S. Court of Federal Claims, U.S. Tax Court, and a Canadian Tax Court in a range of areas: Capital Markets Transactions, Economics of the Capital Market, Derivative Products, Structured Finance and the Risk & Rewards of Structure Financial Products; and Financial Risk Management in the Capital Markets and Financial Institutions. Mr. Finard was a founding member of Deloitte’s Capital Markets Practice and the Partner-in-Charge of Deloitte’s Capital Markets Consulting Practice serving Banks and Securities Dealers. Prior to that, he was VP of Capital Markets Products at HSBC in New York where he structured and executed structured finance and derivative transactions. He has more than twenty-five years of experience in the financial services industry and has worked on the trading desks of major banks; structured and executed structured finance transactions and risk management strategies. Mr. Finard provides expert testimony on complex cases involving structured finance transactions; capital market issues; derivative transactions; financial risk management; credit, market, and operational risk management; economic and financial characterization of structured transactions; internal controls at financial institutions; and valuations of capital market instruments.

Steve Pomerantz, Ph.D. | Affiliated Expert

University of California at Berkeley

Ph.D. in Mathematics, 1986

Queens College of The City University of New York

B.A. in Mathematics, 1981

Dr. Pomerantz has been qualified as expert witness U.S. District Courts in the following areas: mutual fund fees, investment suitability, defined contribution plans, defined benefit plans, hedge fund risk and performance.  Dr. Pomerantz is also a NASD-trade arbitrator.  Dr. Pomerantz provides testimony on complex cases involving mutual funds, defined contribution and defined benefit plans, through analyses of investment management fees and practices; investment-related damages; investment performance and plan structure.  He is the author of “Mutual Fund Advisory Fees: New Evidence and a Fair Fiduciary Test,” and has more than twenty-five years of experience in investment research, financial modeling, derivative structuring, statistics, portfolio and risk management.  His experience in litigation has been in cases involving trust management, investment suitability, derivative valuation, investment strategy analysis, economic damages, tax shelters, mutual funds and investment industry practice.  He is often called upon to use sophisticated mathematical techniques to develop models for valuation, damages and suitability analysis.