acompanhar este excelente texto do DR. Alexander Elder.
"Amateurs and market professionals handle channels differently. Amateurs bet on long shots - they tend to buy upside breakouts and sell short downside breakouts. When an amateur sees a breakout from a channel, he hopes that a major new trend is about to begin and make him rich quick.
Professionals trade against deviations and for a return to normalcy. It is normal for prices to remain within channels. Most breakouts are exhaustion moves that are quickly aborted. Professionals like to fade them - trade against them. They sell short as soon as an upside breakout stalls and buy when a downside breakout stops reaching new lows.
Breakouts can produce spectacular gains for amateurs when major new trend blows out of a channel. Amateurs occasionally win, but it pays to trade with the professionals. Most breakouts are false and are followed by reversals."
...
"A channel's slope identifies a market's trend. When a channel lies flat, you may trade all swings within its walls. When a channel rises, it pays to trade only from the long side, buying at the lower wall and selling at the upper wall. When a channel declines, it pays to trade only from the short side, shorting at the upper channel wall and covering at the lower wall."
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