Professor Angel specializes in the structure and regulation of financial markets around the world, and he has visited over 50 financial exchanges around the world. His current research focuses on short selling and regulation. He teaches undergraduate, MBA, and executive courses, including Financial Crises: Past Present and Future. Other courses include World Equity Markets and Regulation in Financial Markets.

"Dr. Jim" has testified before Congress about issues relating to the design of financial markets. In addition, he has been quoted in hundreds of newspaper articles and has appeared numerous times on radio and television, including NPR and the Jim Lehrer News Hour.

Dr. Jim began his professional career as a rate engineer at Pacific Gas and Electric, where he worked on FERC and CPUC related issues. Along the way he has also worked at BARRA (now part of Morgan Stanley) where he developed equity risk models. He has also served as a Visiting Academic Fellow in residence at the National Association of Securities Dealers (NASD – now FINRA) and also as a visiting economist at the Shanghai Stock Exchange. He has also been chairman of the Nasdaq Economic Advisory Board and a member of the OTC Bulletin Board Advisory Committee.