The bio below comes from a published article and may now be dated.
Stephen Walker is a Ph.D. candidate in Accounting at UC Berkeley Haas School of Business. Prior to his Ph.D. studies, Stephen worked in sellside equity research for Sanford C. Bernstein in New York City covering the transportation industry, and he trained investment professionals with Training the Street. Stephen was also a small business entrepreneur. He holds an MBA from Columbia Business School and started his career in the finance department with CSX Corporation. He can be reached via his personal website at stephenwalker.me (link).