Bulkowski ... "Rising wedges, especially for downward breakouts, are some of the worst performing chart patterns. Downward breakouts have unacceptably high failure rates and small post-breakout declines. Also, pullbacks occur almost two-thirds of the time and throwbacks happen almost three-quarters of the time."
Overall performance rank for up/down breakouts (1 is best): 18 out of 23; 20 out of 21 Break even failure rate for up/down breakouts: 8%; 24% Average rise/decline: 28%; 14% Throwback/pullback rate: 73%, 63% Percentage meeting price target for up/down breakouts: 58%, 46%