What it means
When a price moves up and down within a fairly regular band, you can draw one line along its lows and another along its highs. If the lines slope upward the channel is rising, if they slope downward it is falling, and if they are flat the price is moving sideways.
The space between the lines is the channel. Traders try to buy near the lower line and sell near the upper line, expecting the price to bounce between them.
The idea rests on support and resistance, which are price levels where buying or selling pressure has repeatedly appeared. The more times the price touches a line and turns, the more significant the line is considered to be.
A trading channel also helps manage risk. A trader who buys at the lower line may place a stop-loss order, an instruction to sell automatically, just below it, because a close below the channel is a warning that the pattern has failed.
The distance to the upper line gives a natural profit target. Breakouts are the key nuance.
If the price moves decisively through the upper line with strong volume, it may signal the start of a new, stronger trend, while a break below the lower line may signal a sharp decline. False breakouts are common, so many traders wait for a closing price outside the channel before acting.
For people outside the trading world, a channel is a useful way to describe how a share, currency or commodity has been behaving. It is a picture of a trend, not a forecast, and channels eventually end when news, earnings or economic changes shift the supply and demand balance.
Because the lines are drawn by eye, two analysts can draw slightly different channels on the same chart. This subjectivity is the main criticism of the method, and it is why channels are usually combined with other indicators.
In practice
Real-world examples.
Example
A trader notices that a utility share has oscillated between $38 and $44 for four months. She buys near $38 and sells near $44 several times, taking small, steady gains. When the price closes at $36, she exits to avoid larger losses.
Example
A currency analyst at an import business sees the euro-dollar rate moving inside a falling channel. The company's treasurer decides to delay buying euros until the rate nears the lower line. This timing improves the average rate on the purchase.
Example
A technology share breaks above the upper line of a long channel on heavy volume. A fund manager treats this as the start of a new trend and increases the position. She sets a stop just below the old upper line, which now acts as support.
Formula
Calculation
Channel width = upper line price - lower line price
Potential gain from lower to upper line (%) = (upper line price - lower line price) / lower line price x 100
Suppose a share has bounced between a support line of $50 and a resistance line of $60. The channel width is 60 - 50 = $10. A trader buys at $50 with a stop at $48 and a target of $60. The potential gain is 10 / 50 x 100 = 20%, while the risk is 2 / 50 x 100 = 4%. The reward to risk ratio is 10 / 2 = 5 to 1.Case study
Seen in the real world.
Pelican Cove Foods is a fictional food distributor, and this story is purely illustrative. Its shares traded between $24 and $30 for most of a year, creating a clear channel. A small investment club bought near $24, sold near $30 and repeated the process twice, earning about 25% each time before costs.
When the shares unexpectedly closed at $23 on poor results, the club respected its stop and sold at a small loss rather than hoping for a rebound. The shares then fell to $19. The illustrative lesson is that the channel gave the club a rule for both entry and exit.
Watch out
Common mistakes.
- Treating the lines as exact. Channels are zones and prices often overshoot or fall short by a small amount.
- Assuming a channel will last forever. News, earnings or macroeconomic shifts can break a channel without warning.
- Buying at the upper line in a falling channel or selling at the lower line in a rising one. Always trade in the direction of the channel's slope unless you have a strong reason otherwise.
Questions
People also ask.
What is the difference between a channel and a range?
A flat channel is basically a trading range, but a channel can also slope up or down, which shows trend as well as limits.
How many touches make a channel reliable?
Most analysts want at least two touches on each line, and more touches generally give greater confidence.
Do channels work for long-term investors?
They can help with timing entries, but long-term decisions should rest mainly on business fundamentals and valuation.
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