
 Big Think
 Big Think The evolutionary flaws that keeps you from building wealth | Barry Ritholtz: Full Interview
 Oct 25, 2025 
 Barry L. Ritholtz, Chairman of Ritholtz Wealth Management and author of 'How Not to Invest,' dives into the psychological barriers to successful investing. He reveals how our evolutionary instincts, designed for survival, lead to panic and impulsive financial decisions. Ritholtz discusses cognitive biases like overconfidence and loss aversion that derail investment strategies, while emphasizing the benefits of automation and diversification. He also critiques the financial media's role in amplifying fears, urging listeners to adopt a long-term, evidence-based approach. 
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Evolutionary Biases Undermine Investing
- Our brains evolved for survival, not long-term investing decisions.
- Barry Ritholtz says evolution makes panic and greed natural but harmful in markets.
Disconfirm Your Investment Thesis
- Seek disconfirming evidence before buying an asset.
- Barry Ritholtz recommends testing your thesis by hunting risks and reasons not to buy.
Limit Speculation To A Small Account
- Use a small 'cowboy' trading account for speculative bets.
- Limit it to ~3–5% of liquid net worth so emotions won't wreck your main portfolio.






