Double Top

What Is a Double Top?

A double top is a technical analysis chart pattern that often appears after an uptrend and may signal a trend reversal to the downside. On a chart it resembles the letter "M": the price climbs to a peak, pulls back, rises again to about the same height, and then fails to move meaningfully higher. Chart analysts read the repeated failure at the same price as a sign that buying pressure may be weakening.

How the Pattern Forms

The pattern usually develops in four stages:

• The price rises to a first peak, where sellers push it lower.
• The price falls to a trough, and a line drawn across that low point is called the neckline.
• The price rallies back toward the first peak and forms a second peak at about the same level. This area acts as a resistance level.
• The price fails to break above the first peak and begins to fall.

Analysts generally consider the pattern confirmed when the price closes decisively below the neckline, which is the point where a support level has given way. Many also compare trading volume at the two peaks, since weaker volume on the second peak is commonly seen as a sign of fading momentum.

Estimating a Possible Target

Some traders estimate a downside target by measuring the distance from the peaks down to the neckline and subtracting that distance from the neckline. A common formula is:

Target = Neckline − (Peak − Neckline)

For example, if the peaks sit near 50 and the neckline sits near 40, the estimated target would be near 30. This is a rough, illustrative guide rather than a forecast, and prices often behave differently from the measured move.

Limitations for Investors

Double tops are easier to identify in hindsight than in real time. A price may briefly break below the neckline and then recover, producing a false signal. The pattern also does not indicate how long a decline might last or how large it will be. For these reasons, many investors view it as one piece of a broader analysis rather than a standalone signal. A similar bearish formation with three peaks, the middle one highest, is the head and shoulders pattern.