Ray Dalio

Ray Dalio founded Bridgewater Associates from his New York apartment in 1975 and spent the next 47 years building it into the world’s largest hedge fund, managing roughly $160 billion for sovereign wealth funds, pension funds, and central banks. The firm pioneered risk parity investing — allocating capital by risk contribution rather than dollar weight — a methodology that spread across institutional finance and is now standard practice.

His analytical edge runs on historical pattern recognition, not econometric modeling. Dalio’s 2007 prediction of the 2008 financial crisis — based on a template of historical debt cycles rather than contemporary forecasting models — established his credibility among macro investors in a way that few economists matched. He has since published the most systematically developed theory of long-term economic cycles in the investment world, across four major books that build on a single thesis: the forces driving national rise and decline are measurable, repeating, and readable by anyone willing to study the historical record.

Principles: Life & Work (2017) codified Bridgewater’s radical-transparency management culture. Principles for Navigating Big Debt Crises (2018) formalized the debt-cycle playbook for investors. Principles for Dealing with the Changing World Order (2021) extended the framework to geopolitics and reserve currency transitions. How Countries Go Broke (2025) — his fourth major work — integrates all three into a unified diagnosis of the current macro inflection point, arguing the US is in Stage 5 of the Big Cycle, the period immediately preceding Great Disorder. He sold his final stake in Bridgewater in 2025.