Double top and double bottom. The simplest reversals.

The double top and double bottom are the simplest reversal patterns in technical analysis. Two attempts at the same level, both fail, the trend reverses. The pattern is visible to every trader and every algorithm watching the chart, which is what makes it self fulfilling when it forms cleanly.

The challenge is that almost every chart has two highs near each other somewhere. The trader who calls every twin peak a double top gets faked out constantly. The framework below filters the real ones from the noise.

What a double top looks like

The chart is in an uptrend. Price reaches a high, pulls back to a swing low, rallies again to roughly the same high, then fails to break above it. The two peaks form the M shape.

The pattern completes when price closes decisively below the swing low between the two peaks (the neckline). The break confirms the reversal.

What a double bottom looks like

The mirror image. The chart is in a downtrend. Price reaches a low, rallies to a swing high, falls back to roughly the same low, then fails to break below it. The two troughs form the W shape.

The pattern completes when price closes decisively above the swing high between the two troughs (the neckline). The break confirms the reversal.

The five conditions for a real double top or bottom

One. The prior trend.

The pattern is a reversal pattern. The chart has to be in a clear uptrend (for a double top) or downtrend (for a double bottom) before the pattern forms. Two peaks in a range bound chart with no prior trend is not a double top. It is a range top that may or may not break.

Two. The two peaks at roughly the same level.

The two highs should be within 3 percent of each other on the daily chart for a clean pattern. Closer is better. Peaks more than 5 percent apart are less reliable because the structure is not symmetrical.

Three. Enough time between the peaks.

On the daily chart, at least three to five weeks between peaks is the standard for a reliable pattern. Peaks too close together (a few days apart) often resolve as continuation flags rather than reversals.

On lower timeframes the time requirement scales down. Hourly chart double tops need at least a day or two between peaks. Five minute charts need at least an hour or two.

Four. Volume drops on the second peak.

The first peak typically has strong volume because it is the high of the trend. The second peak should have less volume than the first, showing that the buyers driving the move have lost interest. Volume that matches or exceeds the first peak suggests the trend is still strong and the pattern may not complete.

Five. Volume confirms the neckline break.

The candle that breaks the neckline should have above average volume. A break on weak volume often fails as buyers (or sellers in the inverse case) step in to defend the level.

The entry

The standard entry is on the candle that closes below the neckline (for a double top) or above the neckline (for a double bottom) with volume confirmation.

The aggressive entry is on the second peak rejection (or second trough hold). The trader anticipates the pattern. Higher reward to risk if the pattern completes. Higher failure rate because the second attempt sometimes breaks the level and continues the prior trend.

The conservative entry is on the retest of the broken neckline. After the initial neckline break, price often pulls back to test the neckline from the other side. The retest gives a tighter stop and confirmation that the level has flipped.

The stop

For the standard entry on the neckline break, the stop goes above the second peak (double top) or below the second trough (double bottom). If price moves back above the second peak, the pattern has failed.

For the conservative retest entry, the stop is just above (or below) the neckline. Tighter stop, larger position size for the same dollar risk.

For the aggressive entry on the second peak rejection, the stop is above the most recent swing high (which may be the second peak itself). Wider stop, smaller position size.

The measured move target

The target is the height of the pattern projected from the neckline break point.

A double top with peaks at $100 and a neckline at $90. The pattern height is $10. The target is $80, projected $10 below the $90 neckline break.

A double bottom with troughs at $50 and a neckline at $60. The pattern height is $10. The target is $70, projected $10 above the $60 neckline break.

Targets are reached on average around 60 percent of the time when the break is clean. Use the measured move as the first profit taking anchor. Trail the stop on the rest.

What makes a double top or bottom fail

The second peak is significantly higher than the first. The pattern is not a double top in this case. It is a continuation higher, often the start of a new leg of the uptrend.

The neckline break is on weak volume. Without volume the break is often a head fake. Price returns above the neckline within a few sessions and the pattern fails.

The pattern forms too quickly. Two highs within a week on the daily chart often resolve as continuation flags rather than reversals.

The higher timeframe is not aligned. A double top on the four hour in a strong daily uptrend is more likely to fail than the same pattern on the daily in a sideways or downtrending weekly.

The peaks (or troughs) are too far apart in price. Peaks more than 5 percent apart show the pattern is not symmetrical. The second peak high enough above the first signals continued strength, not exhaustion.

Triple top and triple bottom

The triple top is the same concept with three peaks at the same level. Three failures rather than two. Often more reliable because three attempts at the level have demonstrated exhaustion clearly.

The triple bottom is the bullish equivalent. Three troughs at the same low followed by a neckline break.

Triple patterns take longer to form but produce stronger reactions because the level has been tested more times. The same five conditions apply, just with three swing points instead of two.

The setup that uses double top or bottom

Stock in a daily uptrend that has run for several months. Price reaches $150 high. Pulls back to $140. Rallies again to $151. Stalls. Pulls back to $140. The neckline at $140 is now defining the bottom of an M pattern.

Volume on the second peak was 30 percent lower than the first peak. Bearish divergence.

The setup is to watch for the close below $140 on volume. Entry on the close. Stop above the second peak at $152. Target the measured move at $129 ($11 height projected from the $140 break).

Reward to risk on this setup is roughly 1 to 1 on the measured move target, with potential for more if the reversal becomes the start of a larger downtrend.

Where the audit fits

The audit reads the actual reversal pattern entries and identifies whether the five conditions were met or whether trades were taken on partial patterns. For most retail pattern traders the pattern is too many partial pattern entries. The plan locks the five point checklist as a hard gate before any double top or bottom trade. Five to seven pages.