Failed wedge top, or bull breakout above wedge top (WTBLBO). Common in SPBLT. See also 分类:WB BRBO.
Hypothesis:
If the bull leg that formed the WT is broader, it increases the chance that the BLBO will fail. Failed example: 20230914. Hence, the tighter the bull leg is, the more likely the BLBO above WT will succeed, example 20200408.