Jeremy Siegel
Wharton finance professor who used 200 years of market data to prove stocks are the superior long-term asset
Jeremy Siegel is the Russell E. Palmer Professor Emeritus of Finance at the Wharton School of the University of Pennsylvania and earned his MIT economics PhD in 1971. He is widely known for Stocks for the Long Run, first published in 1994, and for research on inflation-adjusted returns across stocks and bonds. In 2004 he joined WisdomTree's predecessor as a senior investment strategy adviser; WisdomTree now describes him as its senior economist. His work supports long-horizon, diversified, valuation-aware equity investing, while historical returns do not guarantee future results.
Methodologies
- Historical Probability Analysis of Long-Term Stock Holding - Use historical data to calculate the probability of stocks outperforming bonds over different holding periods, providing statistical basis for long-term investment decisions.
- Growth Trap Identification Framework - High-growth companies often underperform low-growth, high-dividend companies due to overvaluation; identifying growth traps is key to stock selection.
Key decisions and timeline
- Born in New Jersey, USA - Solid academic training is the foundation for long-term research impact
- Joined the Wharton School Faculty - The choice of institutional platform is critical for long-term research impact
- First Edition of Stocks for the Long Run Published - Translating rigorous academic research into actionable investment principles can create lasting social impact
Beliefs and mental models
- Belief 1 - Over sufficiently long holding periods (typically 20+ years), stocks almost always outperform bonds, gold, and cash in real terms. Historical data shows U.S. stocks have delivered approximately 6.7% annualized real returns since 1802, versus approximately 3.5% for bonds.
- Belief 2 - Bonds, traditionally viewed as safe assets, can deliver negative real returns in inflationary environments. Siegel's data shows that in many historical periods, bonds were far less effective than stocks as inflation hedges, and investors fundamentally misunderstand bond 'safety'.
- Belief 3 - Dividend reinvestment is a severely underappreciated component of long-term stock returns. Historically, approximately 40% of total stock returns come from dividend reinvestment rather than capital appreciation. During market declines, dividend reinvestment automatically purchases more shares at lower prices, acting as an 'automatic rebalancer'.
- Model 1
- Model 2
- Model 3