In today’s episode we talk to Mark Roberts, founder of Off Wall Street, a legendary provider of short selling research to hedge funds. Seven months before Enron became the biggest bankruptcy in US corporate history, Off Wall Street published a report recommending the shares be sold. The success of this call made Mark and Off Wall Street synonymous with original and rigorous research. We talk to Mark about his unusual personal background, how being a hippie in Berkeley in the 1960s prepared him for identifying overvalued companies two decades later. He explains why questionable accounting and high valuations are the “symptoms, not the disease” and compares today’s markets with those of the Dotcom era. His new book, Off Wall Street How To Win At Short Selling By Betting Against The Crowd was just released in February 2026.

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Episode TimeStamps:

01:41 - Introducing Mark Roberts, Off Wall Street, Enron, and the book

03:35 - An unconventional path: French literature, skepticism, and early life choices

07:40 - The first “short sale”: selling a failing steel business and learning risk firsthand

11:10...

IL46: The Business Model Trap: Why Short Ideas Start in the Real World ft. Mark Roberts

Top Traders Unplugged