Encyclopedia of Chart Patterns. Thomas N. Bulkowski

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Bull Market, Up Breakout Bear Market, Up Breakout
Winner Rising (62%) Rising (61%)
Performance 44% R, 42% F 29% R, 27% F
Bull Market, Down Breakout Bear Market, Down Breakout
Winner Falling (56%) Tie (50%)
Performance –15% R, –15% F –22% R, –22% F
Bull Market, Up Breakout Bear Market, Up Breakout
Winner Heavy (79%) Heavy (79%)
Performance 43% H, 41% L 29% H, 26% L
Bull Market, Down Breakout Bear Market, Down Breakout
Winner Heavy (67%) Light (55%)
Performance –15% H, –15% L –22% H, –22% L

      Winner, Performance. The table shows that heavy breakout day volume suggests better performance most of the time. For example, I found that 79% of the time after upward breakouts in bear markets, high volume led to better performance by 29% (for heavy volume) versus gains averaging 26% for patterns with light breakout day volume.

      You will notice that the percentage difference is not great, especially after downward breakouts (which show ties). Breakout volume is not as good a predictor of performance as many believe.

      Table 1.8: Trend change. This table is different from the others. It shows how often price continues rising or falling more than 20% after the breakout. My thinking is that if a chart pattern shows large post‐breakout moves, then it should be easier to make money trading them. Conversely, a pattern that has lots of small moves may be difficult to trade profitably.

      Occurrence. Only in bull markets do the majority (55%) of chart pattern types see price rise more than 20%. The worst performance (28%) comes from chart pattern types with downward breakouts in bull markets. That poor performance makes intuitive sense because the market trend is upward but the breakout is downward. It's like swimming against the current, so you'd expect the swimmer to struggle.

      Notice that downward breakouts in bear markets place second (49%). It's another indication that trading with the trend (upward breakouts in bull markets and downward breakouts in bear markets) leads to better performance.

Bull Market, Up Breakout Bear Market, Up Breakout
Occurrence 55% 46%
Bull Market, Down Breakout Bear Market, Down Breakout
Occurrence 28% 49%
Bull Market, Up Breakout Bear Market, Up Breakout
Winner Single bust (97%) Single bust (75%)
Performance –22% S, –15% P –24% S, –22% P
Single bust occurrence 53% 76%
Bull Market, Down Breakout Bear Market, Down Breakout
Winner Single bust (94%) Single bust (79%)
Performance 53% S, 41% P 40% S, 28% P
Single bust occurrence 70% 63%

      Winner. Single busted patterns outperform their non‐busted counterparts a good portion of the time. That's especially true for chart patterns in bull markets. They win more than 90% of the contests. Bear markets also win contests, but at a more sedate pace.

      Performance. I compared the performance of single busted patterns with their proxy (P), the non‐busted pattern. In most cases, the performance difference is quite wide.

      For example, in bear markets after downward breakouts, single busted patterns with downward breakouts saw price rise an average of 40% above the top of the chart pattern. The non‐busted patterns saw price climb just 28%, on average.

      Occurrence. This line tells how often a single busted pattern happens (versus double or more than two busts). The higher the number, the easier it'll be to trade a busted pattern that wins big. That means you are more likely to trade a single busted pattern than a pattern that double or triple+ busts.

      Bull markets with upward breakouts show fewer single busts (53%) than the others. I think that's because when the pattern busts, price will be heading lower and that's going against the bullish current. It invites a double bust.

      The chapters that follow look at individual chart patterns. I use statistics to help discover how they behave, and I share my findings with you.

Schematic illustration 
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