Rounding Tops   

The price trend curves beginning from the lower left upward to the top of the dome then round over and moves down again. At the formation end, prices sometimes bottom somewhat higher than where they started.

Percent of successful formations – 69%
Failure rate – 19%
Average time to throwback completion – few hrs
Trading tactics
Compute the formation height by subtracting the right dome low from the formation high. Add the difference to the high to get the target price.