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Buy the Dip vs. Staying Invested Calculator

Last Updated: May 2, 2026 No Comments – < 1 min. read

10%
10%
2.0%
Always invested ($10k)
—
— CAGR
Dip buyer ($10k)
—
— CAGR
Left on the table
—
—
Always 100% invested Dip buyer
Cash deployed
OptimizedPortfolio.com

Here's an interactive widget illustrating the inferiority of the “buy the dip” idea.

Appreciate that this model gives the dip buyer perfect prescience and timing, deploying cash at the exact bottom of each dip, for the absolute best-case scenario for the market timer. In a qualifying dip year, the market timer is fully invested, capturing 100% of the stock market return for the rest of that year after deploying cash.

I explained in detail why DCA and “buy the dip” are suboptimal in a separate post here.

Check out more financial calculators here.



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About John Williamson, APMA®

Analytical data nerd, investing enthusiast, fintech consultant, Boglehead, and Oxford comma advocate. I'm not a big fan of social media, but you can find me on LinkedIn and Reddit.

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