Why Annie Duke Says Your 'Process' Is More Important Than Your Portfolio Returns

marketwatch.com · 2026-05-12
Why Annie Duke Says Your 'Process' Is More Important Than Your Portfolio Returns

Former professional poker champion and author Annie Duke offers a contrarian perspective on the world of finance, arguing that the biggest threat to investors is not market volatility, but their own cognitive biases. Duke highlights how the 'outcome bias'—the tendency to judge decisions based on whether they resulted in a profit or loss—prevents investors from making rational, long-term strategic adjustments. By exploring concepts from her book 'Quit,' this article details how investors fall into traps like loss aversion and emotional paralysis during market downturns. Duke emphasizes that professional investing should mirror professional poker: it requires a cold, calculated approach where 'quitting' is viewed as a vital strategic tool rather than a failure. The piece provides actionable insights on setting pre-emptive 'kill criteria' and focusing on expected value rather than trying to time market bubbles. Ultimately, the article advocates for a disciplined mindset that separates personal ego from financial process to navigate an increasingly uncertain global economic landscape.