Education
"Buy the Dip" Stops Working the Way People Expect in a Genuine Downtrend
The strategy has a strong track record during a bull market's normal pullbacks. It has a much worse one once the underlying trend actually turns — and the difference is easy to miss in real time.
"Buy the dip" earned its reputation honestly during a multi-year bull market: a pullback within an uptrend has, historically and repeatedly, tended to resolve back to new highs, which made buying those dips a strategy that worked often enough to become conventional wisdom.
The strategy's hidden assumption is that the dip is happening within a trend that's still fundamentally intact — and that assumption quietly stops holding the moment the broader trend actually reverses. In a genuine downtrend, each "dip" is not a pause before the next leg up; it's simply the market continuing to do what it's actually doing, and each bounce bought on the way down tends to get sold at a lower high than the last one.
The genuinely difficult part is that, in real time, an early leg of a real downtrend looks identical to an ordinary pullback within an uptrend — there's no chart pattern that reliably distinguishes the two until well after the fact, which is exactly why the strategy keeps getting applied in situations where it no longer works.
This is less an argument against buying dips and more an argument for sizing each one as though it might be the wrong kind — a habit that costs little during a real pullback and saves considerably more during a real reversal.