The Most Successful Chart Patterns
http://www.investors.com/learn/b10a.asp
Research shows the greatest stock market winners formed one of five basing chart patterns at the beginning of their major price advances or shortly thereafter.
Cup with handle
Saucer with handle
Double bottom
Flat base
Ascending base
Studies show most of these basing patterns should form over at least seven or eight weeks; however, the flat base can be as short as five weeks. Typically, the longer the basing period, the stronger the potential price increase. Many bases are up to fifteen months or longer.