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Short and narrow performance 39% –13% Short and wide performance 49% –11% Tall and wide performance 42% –17% Tall and narrow performance 63% –17%

      Width. Width is not as strong an indicator for future performance as is height. The table shows an example of this, too. After an upward breakout, narrow patterns outperform but wide ones do better after downward breakouts.

      To determine width, measure the calendar days from the start of the pattern to the end and compare the result to the median width in the table. A value higher than the median means it's wide.

      Height and width combinations. According to the table for upward breakouts, if tall patterns outperform and narrow patterns outperform, you'd expect the combination of tall and narrow to be the best performer. Indeed, that's what happens, but that's not always the case.

      For downward breakouts, tall and wide patterns should outperform, but the results show that anything tall is best. Avoid short patterns.

      Table 8.6 shows volume‐related statistics. If the height table is my favorite, then volume is at the other end. I think traders put too much emphasis on volume. Remember that for every share sold, one is bought. If an institution buys a gazillion shares, they are probably buying it from another institution that is selling a gazillion shares.

      Volume trend. Volume trends higher most often in the chart pattern.

      Rising/Falling volume. I sorted performance by the trend direction and found that patterns with a rising volume trend outperform.

      Breakout day volume. Heavy breakout day volume only sees improved performance for broadening bottoms after upward breakouts.

      Table 8.7 shows how often price reaches a stop location. You can use this information to help locate a stop‐loss order, should you decide to use one. I'm not being cute here. Investors (buy‐and‐holders) should not use a stop in my opinion. Shorter‐term traders would be wise to use a well‐placed stop or a mental stop (if you have the willpower to obey that).

Description Up Breakout Down Breakout
Volume trend 65% up 67% up
Rising volume trend performance 46% –15%
Falling volume trend performance 43% –14%
Heavy breakout volume performance 46% –15%
Light breakout volume performance 43% –15%
Description Up Breakout Down Breakout
Pattern top 77% 1%
Middle 23% 15%
Pattern bottom 3% 73%
Description Up Breakout Down Breakout
1990s 40% –17%
2000s 46% –14%
2010s 46% –14%
Performance (above), Failures (below)
1990s 15% 13%
2000s 17% 30%
2010s 17% 31%

      If you place a stop at the top of the pattern, price will take out the stop 77% of the time after an upward breakout. Downward breakouts will only reach the top of the pattern 1% of the time. That makes sense, doesn't it?

      Table 8.8 shows the performance over three decades. How has the pattern performed over time? Let's find out.

      Performance over time. Upward breakouts in the 1990s suffered but downward breakouts did better. I can't explain why. The 2000s contained not one but two bear markets, but I excluded those results from the table.

      Failures over time. The 1990s were the worst performers, but they have the best (lowest) failure rates. Again, this puzzles me. Because the failure rate is a function of performance, then I'd expected patterns that showed big moves to have lower failure rates. They don't.

      Table 8.9 shows busted pattern performance. At one time, I thought that busted patterns were the way to make a bundle trading chart patterns. They can be, but it's not as easy as you might expect.

      Busted patterns count. I counted the number of busted patterns and found that 42% of broadening bottoms with downward breakouts will bust. Ouch. It's less painful for upward breakouts, with a quarter of them busting.

      Busted occurrence. If we sort the busted patterns into three bins, single busts, double busts, and three or most busts (triple+), we see the results in the table. Notice that most of the busts are single ones.

      Perhaps now you understand why trading busted patterns might be the way to riches. Probably not, but we can dream. Try looking for a single busted downward breakout from a broadening bottom. Then try to carve

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