E427: AQR's Peter Hecht on AI, Market Bubbles & How the Best Investors Build Portfolios
E427: AQR's Peter Hecht on AI, Market Bubbles & How the Best Investors Build Portfolios  
Podcast: How I Invest with David Weisburd
Published On: Wed Sep 09 2026
Description: Peter Hecht, Managing Director at AQR Capital Management, explains why diversification has to be measured by underlying risk rather than the number of investments you own. At AQR, diversification is a core principle: thousands of relatively small, uncorrelated investment decisions can collectively create an attractive return for a given level of risk.