This week on Generating Alpha, I sat down with Peter Muller, founder and CEO of PDT Partners, one of the most successful and secretive quantitative trading firms in modern finance.

Pete's journey is unlike any other on Wall Street. After graduating with honors in mathematics from Princeton, he moved to California to compose music for rhythmic gymnastics teams before landing at BARRA, where he discovered his passion for quantitative finance. In 1993, he pitched Morgan Stanley with a radical idea: using quantitative models rather than human traders to manage portfolios. They gave him two years to make it work. He founded Process Driven Trading (PDT) and built it into a legendary operation that reportedly generated over $20 billion in cumulative profits before spinning out as an independent firm in 2012.

What made PDT extraordinary wasn't just the returns—reportedly averaging over 20% annually through 2010—it was the culture. Pete recruited physicists, mathematicians, and unconventional thinkers who thrived in an environment valuing precision and innovation, maintaining consistent performance through multiple market cycles while staying almost entirely out of the public eye.

Beyond finance, Pete is an accomplished singer-songwriter and pianist who has released six albums, performed at the Montreux Jazz Festival, and famously busked in New York City subways. He creates crossword puzzles for The New York Times, serves as a trustee of Berklee College of Music, and co-founded Math for America.

In our conversation, we explored how Pete builds models that actually work, manages risk through volatile markets, and created a culture that attracts the brightest minds in finance. We also discussed the parallels between music and quantitative trading, and why the best strategies come from asking better questions.

It's an extraordinary window into one of finance's most brilliant and enigmatic minds.

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