Nick Maggiulli

American author and Chief Operating Officer at Ritholtz Wealth Management. Writes the data-driven personal finance blog Of Dollars And Data at ofdollarsanddata.com, publishing weekly. Author of Just Keep Buying (2022), which sold over 400,000 copies worldwide, and The Wealth Ladder, a New York Times bestseller. Known for applying statistical analysis and behavioural finance to everyday personal finance questions; formerly a data analyst before joining Ritholtz.

Central argument: financial success depends less on market-timing or stock selection than on systematic, consistent saving and investing — the ‘just keep buying’ thesis. The Wealth Ladder framework extends this: as wealth grows, risk exposure should shrink rather than expand, because the marginal utility of each additional dollar falls while the psychological cost of equivalent losses intensifies.

In the wiki

• The Risk-Wealth Paradox (Of Dollars And Data, May 2026) — as wealth grows, risk-taking should collapse: the financial cost of loss falls but the psychological cost rises; the risk squeeze and recovery asymmetry
• Just Keep Buying — his 2022 book making the empirical case for dollar cost averaging across all conditions
• The Wealth Ladder — his follow-up on why risk tolerance should fall as wealth rises; the Risk-Wealth Paradox