Double Top and Double Bottom Patterns: M and W Shapes

Two of the most recognisable reversal patterns share a simple logic: price tries to break a level twice, fails, and turns. These are the double top and double bottom — easy to remember because they literally look like the letters M and W.

The double top (M)

A double top forms after an uptrend:

1. Price rises to a high and pulls back.
2. It rallies again to roughly the same high — but can’t break above it.
3. It falls away from that second peak.

The two peaks sit at a similar level, with a valley between them. The shape looks like an M. The message: buyers tried twice to push higher and failed both times, suggesting the uptrend is stalling.

The double bottom (W)

A double bottom is the mirror image, forming after a downtrend:

1. Price falls to a low and bounces.
2. It drops again to roughly the same low — but holds.
3. It rises away from that second trough.

Two troughs at a similar level, with a peak between them — the shape of a W. Sellers tried twice to push lower and couldn’t, hinting at a possible bottom.

The confirmation level

The key level is the middle:

• For a double top, the confirmation level is the valley between the two peaks. The pattern is generally considered confirmed only when price closes below it.
• For a double bottom, it’s the peak between the two troughs. Confirmation comes when price closes above it.

Until that break happens, you have a potential pattern, not a completed one. Two peaks alone don’t make a double top — the break does.

Why “twice” matters

The power of these patterns is the failed retest. The first peak or trough sets a level; the second tests whether that level still holds. When the market refuses to make a new extreme on the second try, it is showing that the prior trend is losing strength.

Common mistakes

• Calling it too early — before the confirmation level breaks.
• Demanding identical highs/lows — the two peaks or troughs only need to be roughly level, not exact.
• Ignoring the trend before it — a double top only makes sense after an uptrend; a double bottom after a downtrend.

A realistic expectation

These patterns describe a tendency, not a promise. They fail regularly, especially when traders jump in before confirmation. Treat them as context. Nothing here is financial advice.

Practice it

The fastest way to tell an M from a W under pressure is repetition. The Chart Pattern Trainer shows you fresh charts and asks you to name the pattern, so double tops and bottoms become instantly recognisable.