Carson Block: Building Muddy Waters, Short Selling, Quant Strategies & Market Risk

Carson Block, Founder and CEO of Muddy Waters Capital, joins Capital Thesis for a conversation on activist short selling, corporate fraud, quantitative strategies, passive investing, and the risks facing financial markets.Carson is one of the most influential figures in activist short selling. Through Muddy Waters, he has built a reputation for investigating corporate fraud, accounting irregularities, and financial misconduct across the U.S., China, and Europe. Over time, the firm has expanded beyond activist short selling into quantitative momentum strategies, junior mining investments, and other approaches to capital allocation.In this conversation, Carson discusses his career, from his early experience in investment banking and China to the investigation of Orient Paper that led to the founding of Muddy Waters.We explore how activist short selling works, how investors can identify corporate misconduct, and why distinguishing outright fraud from aggressive financial engineering matters when evaluating companies and structuring short positions.Carson also explains how Muddy Waters has evolved beyond its original strategy, including its quantitative momentum approach, junior mining investments, and the challenges of traditional fundamental investing in markets increasingly shaped by passive flows.Beyond individual companies, we examine how passive investing affects price discovery, why market structure may be becoming increasingly fragile, and how AI-driven labor disruption could affect retirement contributions, equity flows, and broader market stability.Finally, Carson reflects on what he has learned throughout his career, the challenges of generating returns through active investing, and what he would tell his younger self about how financial markets really operate.FOLLOW CAPITAL THESISSpotify: https://open.spotify.com/show/033WreqkyC5riEkudo1KxTInstagram: https://www.instagram.com/capitalthesispodcast/X: https://x.com/francobauerle0CHAPTERS00:00 Intro00:48 Carson Block Introduction01:21 Early Career & Why He Moved to China05:35 The Reality of China's Stock Market07:36 Investment Banking & Corporate Fraud13:58 Why Carson Went to Law School15:48 Building a Business in China21:01 Discovering Orient Paper28:12 The Report That Launched Muddy Waters30:49 Why Corporate Fraud Persists32:21 Outright Fraud vs. Financial Engineering35:06 The Challenges of Activist Short Selling39:49 Why Muddy Waters Expanded Beyond Short Selling43:29 Quantitative Momentum Strategies44:48 Passive Investing & Price Discovery47:29 Junior Mining Investments48:55 Lessons From Investing in Vietnam50:00 Why Fundamental Investing Has Changed50:55 AI, Job Displacement & Passive Flows53:06 What Could Trigger a Market Sell-Off?53:53 Carson's Biggest Lesson From Investing55:42 Closing—Capital Thesis features conversations with leading investors, economists, and capital allocators on markets, investing, and the forces shaping the global economy.Hosted by Franco Bauerle.DISCLAIMERThe views and opinions expressed in this podcast are those of the participants and are provided solely for informational and educational purposes. Nothing discussed in this episode constitutes financial, investment, legal, tax, or other professional advice, nor should it be construed as an offer, solicitation, or recommendation to buy or sell any security, financial instrument, or investment product.Capital Thesis and its host are not registered investment advisers. Guests may hold positions in securities, assets, or investments discussed during the conversation. Investing involves risk, including the possible loss of principal. Past performance is not indicative of future results.Listeners should conduct their own research and consult with a qualified financial professional before making any investment decisions.