Donald Robertson Associate Managing Director, North American Banks and Securities Firms Moody's Investors Service

Donald Robertson is an Associate Managing Director based in New York who oversees the North American teams covering US-based global investment banks, specialty finance companies and securities firms. 

From 2013-2021, Donald was a lead analyst for global investment banks, securities firms and market infrastructure firms. In this role he had direct responsibility for the ratings of a number of US and European banks, exchange operators, electronic market makers and clearing houses. Donald was the lead author of Moody’s rating methodologies for Securities Industry Market Makers and Securities Industry Service Providers, and played an integral role in their development and implementation. 

Donald joined Moody’s in 2007 as an accounting specialist in Moody’s Enhanced Analytics Group. In this role, he originally focused on various non-financial corporate sectors, publishing research on complex financial reporting topics and helping educate Moody’s analysts on matters of accounting and financial reporting. Donald subsequently transitioned into Moody’s Financial Institutions Group to lead the development of Moody’s cross-sector rating methodology for Financial Statement Adjustments in the Analysis of Financial Institutions and helped develop and implement Moody’s system for capturing, adjusting and analyzing banks’ financial reporting. 

Prior to joining Moody’s, Donald was a Director of Financial Audit at Siemens Corporation, responsible for leading a team conducting IFRS and US GAAP audits in the Americas’ region. Donald started his career at PwC, in the firm’s Glasgow, UK office. In 1998, he transferred to the New York Metro region, and was an audit manager with a client base in the pharmaceutical industry. 

Donald is a CA and CPA (inactive), and holds an undergraduate degree from the University of Glasgow.

Peter Nerby Senior Vice President, North America Banks and Securities Firms Moody's Ratings

Since joining Moody’s in November 1998, Peter Nerby has been responsible for analyzing and rating the investment banks, broker-dealers and exchanges within the U.S. securities industry. Peter is currently lead analyst covering Citigroup, Deutsche Bank and JPMorgan Chase. Peter came to the company with more than 15 years’ of experience in corporate finance, credit, and counter party analysis. 

Prior to joining Moody’s, he led a team at Deutsche Bank that was responsible for managing the bank’s exposure to U.S. broker dealers. He also spent 12 years at JPMorgan and after completing JPM’s management training program, specialized in managing trading and derivatives counter party risk with regulated financial institutions and hedge funds.

Mr. Nerby holds a B.A. in Business Administration from the Richard Ivey School of Business at the University of Western Ontario. After graduation, he spent a year writing case studies on financial strategies of Canadian natural resource companies for use in the School’s graduate and undergraduate programs. He is a Chartered Financial Analyst.

Warren Kornfeld Senior Vice President, Banking, Financial Institutions Moody's Ratings

Warren Kornfeld is a Senior Vice President in Moody’s Financial Institutions Group covering mortgage, credit card, student loan banks and finance companies as well as Government Sponsored Enterprises (FHLBanks, Farm Credit, Fannie and Freddie).

Prior to joining the Financial Institutions Group, Warren was a Managing Director for Structured Finance Administration overseeing key strategic initiatives and prior to that Warren co-headed the Residential Mortgage- Backed Securities (RMBS) team as well as headed up the U.S. Servicer Ratings team.

Warren joined Moody’s in 2001. Prior to Moody’s, Warren held senior investment banking positions with William Blair & Co., The Industrial Bank of Japan and Bickford & Partners focusing on a securitizations of a wide range of asset types, including residential mortgages, equipment lease, auto loan and lease, consumer assets and commercial receivables.

Warren holds a B.S. in Finance and Decision Sciences from the Wharton School of the University of Pennsylvania.

Rita Sahu Vice President - Senior Credit Officer, North America Banks Moody's Investors Service

Rita Sahu is a Vice President - Senior Credit Officer in the Financial Institutions Group of Moody’s Investors Service, covering a portfolio of US banks. She joined Moody’s in 2003 as an Associate Analyst and has had lead analytical responsibilities since 2005.

Before joining Moody’s, Rita held positions with J.P. Morgan, primarily in counter party credit risk management, where she was responsible for monitoring and reporting on the firm’s global trading activities. Prior to J.P. Morgan, she was a compliance officer at Republic National Bank of New York. Rita began her career as a bank examiner for large regional and community banks with the Office of the Comptroller of the Currency.

Rita holds a BS in accounting from Rutgers University and an MBA in finance from Columbia Business School.