Dollar Cost Averaging: The Simple Strategy That Works

The most successful investors often do something that sounds almost lazy: they invest the same modest amount on the same boring schedule, no matter what the headlines say. One person panics and waits. Another quietly keeps buying. A decade later, their results look nothing alike.

Vanguard looked at nearly a century of market history and found something odd: putting all your money in at once usually wins on paper—yet spreading it out often feels safer, keeps people invested longer, and avoids some of the ugliest outcomes. That tension between “mathematically optimal” and “psychologically doable” is where dollar cost averaging quietly shines.

Instead of trying to guess the perfect moment, you turn timing into a routine. You don’t argue with the market; you appoint a calendar as your boss. Over time, this shift—away from prediction and toward process—changes your role from a nervous spectator to a steady participant. It’s less about beating anyone and more about refusing to knock yourself out of the game with one bad decision.