The double top and double bottom are two of the most common reversal patterns on any chart. They're easy to recognise — one looks like an M, the other like a W — and they mark the point where a trend runs out of steam.
The double top (the "M")
A double top forms after an uptrend and signals a possible reversal down. It has two peaks:
- Price rallies to a high, then pulls back.
- It rallies again to about the same high — but fails to break above it.
- It falls away from that second peak.
The two peaks at roughly the same level form the M shape. The low between them marks the support level (sometimes called the neckline).
Why it matters: the second failed attempt at the high shows buyers can't push price any higher. The trend is stalling, and sellers are ready to take over.
The double bottom (the "W")
A double bottom is the mirror image. It forms after a downtrend and signals a possible reversal up:
- Price falls to a low, then bounces.
- It falls again to about the same low — but won't break below it.
- It rises away from that second trough.
The two troughs form the W shape, with the peak between them marking resistance. The second failed attempt at the low shows sellers are exhausted and buyers are stepping in.
Note
The logic is the same both ways: price tests a level twice and fails to break it. That failure is the market telling you the trend is losing power.
Confirmation is the key
Two peaks alone don't make a tradeable pattern — the shape has to be confirmed:
- A double top is confirmed when price breaks below the support (the low between the peaks).
- A double bottom is confirmed when price breaks above the resistance (the high between the troughs).
Until that break happens, you just have price bouncing in a range. The break is what turns the shape into a reversal signal. As with head and shoulders, traders sometimes measure the height of the pattern and project it from the break to estimate how far price might travel.
Risk
Double tops and bottoms fail often — price can break the level and then snap back (a false breakout). Always wait for a confirmed break and use a stop loss. Never assume the second peak or trough will hold.
What makes them more reliable
These patterns are stronger when:
- They follow a clear, extended trend — there must be a trend to reverse.
- The two peaks (or troughs) are at similar levels and separated by a real pullback, not a tiny wiggle.
- The break of support/resistance is decisive, ideally on higher volume.
- They appear on higher timeframes (daily or weekly), where patterns carry more weight.
A messy double top on a one-minute chart is far less trustworthy than a clean one on the daily.
Don't jump the gun
The most common mistake is trading the pattern before the break — shorting at the second peak "because it looks like a double top". Sometimes price just keeps going up and there was never a pattern at all. Patience for the confirmed break filters out most of these traps.
How to practise
- Open a daily chart of a major pair and scroll through history.
- Find M-shapes at the top of uptrends and W-shapes at the bottom of downtrends.
- Mark the support/resistance level and watch what happened at the break.
- Test your reads on a demo account so there's no money at risk while you learn.
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The bottom line
A double top (M) forms after an uptrend and signals a reversal down; a double bottom (W) forms after a downtrend and signals a reversal up. Both show price testing a level twice and failing — but neither is valid until price breaks the level between the peaks or troughs. Wait for that confirmed break, favour higher timeframes, and always trade with a stop.
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