Burton G. Malkiel

Burton G. Malkiel is an American economist whose A Random Walk Down Wall Street has made the case for index investing to generations of readers since its first publication in 1973.

Burton Malkiel is a Princeton economist and former member of the Council of Economic Advisers who has spent his career studying financial markets with a particular focus on the efficient market hypothesis — the idea that asset prices reflect all available information and therefore cannot be consistently beaten by active stock selection or market timing. A Random Walk Down Wall Street, first published in 1973 and revised more than a dozen times since, is the most consistently updated argument for that position in popular finance.

The book’s enduring argument is that active management — the attempt to pick stocks or time markets through research, analysis, or intuition — does not, on average and net of costs, outperform a simple strategy of owning the whole market through low-cost index funds. Malkiel marshals historical evidence, behavioral economics, and performance data to make this case with clarity and some wit. Each edition updates the data and engages with new developments in financial markets, which has kept the book current in ways that most investment books become outdated.

The criticism from active management practitioners is that the efficient market hypothesis is too strong a claim, and there is evidence that certain market inefficiencies exist, particularly over shorter time horizons or in less liquid markets. Malkiel engages these objections fairly. For the individual investor — as opposed to the institutional trader with genuine edge — his central recommendation remains as well-supported as when he first made it, and the historical record of active versus passive management has consistently borne him out.