Mr. Nielsen leads Navigant's Financial Services Disputes & Investigations service line. For more than 15 years, he has advised law firms, companies and boards on the economic aspects of commercial disputes and regulatory investigations, specifically matters involving the financial services industry and real estate. He has been retained on more than 50 banking-related matters and has extensive knowledge of mortgage markets and products, including residential and commercial loans, as well as mortgage banking, securitizations, and servicing operations. He is currently leading a number of the firm's major subprime-related engagements. Mr. Nielsen is a frequent speaker on mortgage-related issues and securities litigation and has been quoted, or has had his work cited, in Supreme Court briefs, academic journals and publications such as "American Banker", "National Mortgage News", "National Law Journal", "The Wall Street Journal" and "Business Week", among others.