Inside the sloping trend lines up, there was an ascending triangle (the lower line was identified by Vasily) and the steeper line normally loses.
The market was literally "boxed in" and combined with a shift in sentiment to risk off intertwined with increased risk of a Brexit, it had to happen
The market was literally "boxed in" and combined with a shift in sentiment to risk off intertwined with increased risk of a Brexit, it had to happen