The Role of Price Channels in Identifying Support and Resistance Levels
Prices frequently oscillate between two parallel trend lines, forming price channels. When the price hits one trend line, it typically rebounds towards the opposite parallel line, establishing a support and resistance channel.
How to Construct a Price Channel
Each technical analyst must make decisions when constructing the channel. The general rule of thumb is that the longer a low or high remains intact, the more significant it is, and the more reliable the trend line built through it will be. At least two bottoms or tops are needed to construct a trend line. As price action continues to develop, additional construction points may be identified.
In an uptrend, a support line connects the lows, while a parallel resistance line connects the highs, forming the channel. The channel remains valid until the support line is breached. Similarly, a resistance trend line is drawn through the descending highs in a downtrend, and a parallel support line is drawn through the lows. The channel remains intact until the resistance line is broken.
It’s common practice to draw multiple trend lines through various lows, outlining alternative price paths.
Chart 1: Downtrend Price Channel. Source: MetaTrader4
Chart 1 illustrates a descending price channel. A trend line connects the highs, acting as resistance, while a parallel support line limits the individual price declines. The break at the end of the chart was false.
How to Use Price Channels
Price channels offer good risk-adjusted opportunities. A glance at Chart 2 reveals that good selling points are often found near the resistance line. Placing the stop-loss above that line and take-profit around the support line results in a reward-to-risk ratio of 2:1 or more.
Price channels are most effective when used with other technical analysis techniques. Moving averages, for example, are excellent trend-following indicators and significantly aid in trend identification.
Traders often seek opportunities to open positions that align with the primary trend.
Chart 2: Uptrend Price Channel. Source: MetaTrader4
For instance, the one-hour price channel in Chart 2 follows the direction of the daily channel. Therefore, purchases made around the hourly support line have a good chance of success.
Sometimes, charts do not present perfect parallel lows and highs. In an uptrend, the lows must be precisely selected, as they determine the slope of the support line. However, the parallel resistance line should also be constructed carefully as take-profit levels and other strategy adjustments depend on it.
The same principle applies in a downtrend. First, the descending resistance line is built, and then the parallel support line is defined.
A false break occurred towards the end of Chart 2. The definition of a “break” is subjective. More conservative traders would wait for price action outside the channel to confirm the break. More aggressive traders will react quickly as they look for early reversal signals.
A break of the price corridor contains valuable information. Broken support turns into resistance and vice versa. A price target is calculated by applying the distance between the two parallel lines to the breakpoint.
Chart 3: Price Channel Break. Source: MetaTrader4
Refining the price target with other technical tools, such as Fibonacci retracements, is recommended.
Price channels can also be constructed when prices are consolidating.
Chart 4: Sideways Channel. Source: MetaTrader4
Chart 4 shows how the downtrend has encountered temporary support. Prices have entered a period of sideways movement. In the first part of that period, prices rose slightly. The red channel reflects this pattern. During the blue channel, sellers gradually prevailed, restoring the decline.
Conclusion
Price channels are among the most used technical analysis techniques. They identify parallel support and resistance lines and create future price projections. The main disadvantage of the channels is that part of the price movement must have already taken place to select suitable bottoms and tops to construct the lines.
