Barry Ritholtz, Columnist

Index Funds Are Going to Be Just Fine

Inflows have slowed? Actively managed funds would like to have that problem.

This is where the analogy ends.

Photograph: DEA/S. Vannini/De Agostini Editorial/Getty Images

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If something cannot go on forever, well then, it will eventually stop. So said economist Herbert Stein when he made this obvious but insightful observation. Trees do not grow to the sky, and matters that are truly unsustainable eventually come to an end.

The most recent example of something that can’t go on forever has been the inflows into low-cost, passive index funds, primarily to the detriment of higher-cost, actively managed funds. As the Wall Street Journal reported: