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The Best 10 Days Myth

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xianyu-hao-uHIA-7emaJo-unsplash cropped-1The best 10 days rule is the concept that missing just the 10 best days in the stock market dramatically reduces your long-term return – and we think it’s a strawman argument.

Strawman Argument: an intentionally misrepresented proposition that is proposed because it is easier to defeat than an opponent's real argument.

To dig into the strawman nature of the argument by using data, we compared the impact of buying and holding the S&P 500 Index versus missing only the 10 best days.

We think our test showed that what complicates the matter is that the argument is technically true – missing ONLY the top 10 BEST days did reduce return. But this is not the whole story of this strawman.

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