Price likes to move in AB=CD price structures where there is a time and price element in the pattern. The AB is equal to CD on a time and price basis the CD leg being a 100 level expansion of the AB leg. This particular price structure here on the NASDAQ has two possible AB=CD patterns in play. The blue ab=cd is what I call a hidden time window because it is much harder to see. The black AB=CD is the traditional time window and it is usually much easier to find. The bearish harmonic pattern that I have highlighted is what gives the AB=CD patterns their price structures. The BC legs are found by using the A and D swings on the harmonic pattern. Once you are able to spot a likely AB leg you can use it to anticipate price and time which is how I have defined the downside target area.