Donchian Channels (DC): How to Read It
Donchian Channels plot the highest high and lowest low over a lookback period, with a middle line between them. They are a classic tool for spotting breakouts to new highs or lows.
The formula
Common settings: 20 periods for entries, 10 periods for exits
How to read it
- Price reaching the upper channel means a new N-period high.
- Price reaching the lower channel means a new N-period low.
- A widening channel shows growing volatility.
- A narrow channel shows consolidation.
- The middle line can act as a trend bias guide.
Typical signals
- Close above the prior upper channel as a breakout buy signal.
- Close below the prior lower channel as a breakdown signal.
- Using a shorter channel's opposite side as a trailing exit.
Pitfalls to avoid
- Many breakouts fail in sideways markets.
- Exits can give back a large part of gains.
- Channel edges can be distorted by a single spike.
Strategies that use it
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Who uses Donchian Channels?
They are popular with trend followers and breakout traders.
What is a 20-day breakout?
It is when price closes above the highest high of the past 20 days.
How do I exit a Donchian trade?
A common approach is exiting when price hits the opposite side of a shorter channel, such as 10 periods.
Works well with
Average True Range
Average True Range measures how much an asset typically moves in a period, including gaps. It does not show direction, but it is extremely useful for sizing positions and placing stops.
💪Average Directional Index
The Average Directional Index measures how strong a trend is, regardless of its direction. Paired with the +DI and -DI lines, it also helps identify which side is in control.
📊Volume
Volume shows how many shares, contracts or coins traded during each period. It reveals the level of participation behind a price move and helps judge whether a move has conviction.