1.
Rises to a peak and subsequently declines.
2. Then, the price rises above the former peak and again declines.
3. And finally, rises again, but not to the second peak, and declines
once more.
The
first and third peaks are shoulders, and the second peak
forms the head.
The "head-and-shoulders" pattern
is believed to be one of the most reliable trend-reversal
patterns.