Shape: The high tight flag starts with a flagpole, or a nearly vertical ascent of at least 100% in four to eight weeks.  This is followed by a flag (a low volume pullback of 10% to around 25% in three to five weeks)
When do they appear: High Tight Flags often appear early in a stocks run, usually after a change has occurred to dramatically improve a company’s competitiveness and fundamentals.  Many flag patterns have flaws, so make sure it has all of the right elements. Don’t buy until the stock hits the proper buy point, 10 cents above the highest point in the flag.
Pivot: The high point of the pattern