As of 11/13/2024
  Indus: 43,958 +47.21 +0.1%  
  Trans: 17,539 +154.26 +0.9%  
  Utils: 1,023 -2.57 -0.3%  
  Nasdaq: 19,231 -50.67 -0.3%  
  S&P 500: 5,985 +1.39 +0.0%  
YTD
 +16.6%  
 +10.3%  
 +16.0%  
 +28.1%  
 +25.5%  
  Targets    Overview: 11/12/2024  
  Down arrow43,000 or 46,000 by 12/01/2024
  Up arrow18,000 or 16,600 by 12/01/2024
  Down arrow1,000 or 1,075 by 12/01/2024
  Down arrow18,850 or 20,000 by 12/01/2024
  Down arrow5,800 or 6,100 by 12/01/2024
As of 11/13/2024
  Indus: 43,958 +47.21 +0.1%  
  Trans: 17,539 +154.26 +0.9%  
  Utils: 1,023 -2.57 -0.3%  
  Nasdaq: 19,231 -50.67 -0.3%  
  S&P 500: 5,985 +1.39 +0.0%  
YTD
 +16.6%  
 +10.3%  
 +16.0%  
 +28.1%  
 +25.5%  
  Targets    Overview: 11/12/2024  
  Down arrow43,000 or 46,000 by 12/01/2024
  Up arrow18,000 or 16,600 by 12/01/2024
  Down arrow1,000 or 1,075 by 12/01/2024
  Down arrow18,850 or 20,000 by 12/01/2024
  Down arrow5,800 or 6,100 by 12/01/2024

Bulkowski's Double Top Study

My book, Swing and Day TradingSwing and Day Trading: Evolution of a Trader book., has swing and day trading techniques and setups that may interest you.

If you click on the above link and then buy the book (or anything) while at Amazon.com, the referral will help support this site. Thanks.

-- Tom Bulkowski

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This page describes a study using double tops that showed the time to decline after a double top (CD in the figure below) is similar to the rise (AB) leading to the chart pattern.

Summary
Details
Identification Guidelines
Example
See Also

The double top chart pattern setup

This is the same information as the Double Top Setup but without the trading implications.

Double Top Study: Summary

When trying to measure how long it will take a stock to reach the launch price after confirmation (the CD move in the above figure), the time to rise from A to B is a good approximation.

Double Top Study: Details

I conducted a study to discover how long it takes price to return to the launch point after a confirmed double top. If you trade options, knowing how quickly price will hit a target is vital.

Referring to the above picture, I examined 1,333 double tops from 1/1990 to 6/2006 in 317 stocks and found 309 that looked like the picture. A flat base or congestion region preceded the double top. Then price moved up in a straight-line run (AB) to the double top. The double top appeared and confirmed when price closed below the valley between the two peaks (the red line at C). Then, price returned to the launch price (D).

I measured the time to rise from the trend start at A to the peak at B and compared it to the decline from confirmation, C, to the launch price, D.

The AB move took an average of 24 days. The CD move took an average of 19 days. This is perhaps not surprising because the distances are shorter, that is, CD is shorter than AB on a price basis. But, we are measuring time. I chose the confirmation point because that's when a twin peak becomes a true double top and that's the sell signal for a stock holding or the time you buy a put option.

When trying to measure how long it will take a stock to reach the launch price after confirmation (the CD move in the above figure), the time to rise from A to B is a good approximation.

Top of page More

Double Top Study: Identification Guidelines

This is not an easy pattern to identify in an emerging price trend nor is it plentiful. Here is what to look for.

Double top setup example

Double Top Study: Example

The chart on the right shows an example of an Adam & Adam double top chart pattern. The flat base is not clear on this chart, but it lasted over a month. Since this stock has a wide daily trading range, the base also shows large price swings. In that regard, the chart is not a perfect example.

The rise from A (the launch point that begins the straight-line run up) to B (the top of the first peak in the double top) takes 16 days. Price confirms the double top chart pattern at C. The decline from C (the confirmation point) to D (the low closest to the launch price), is 15 days.

-- Thomas Bulkowski

Top of page More

See Also

 

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