Donchian Channel
Richard Donchian · Turtle Trading
What it measures
Draw the highest high and lowest low of a fixed window as two lines, and trade only the moment price cuts through one. This is the method the legendary Turtle traders used.
How TickTurn reads it
A break above the 20-day high counts bullish, a break below the 20-day low counts bearish. Inside the channel, sitting in the top 75% counts bullish and in the bottom 25% counts bearish.
That judgement is made on closed daily bars only; a bar still in progress is left out, because including it makes the same symbol change its answer within the day. On the result screen this indicator holds one vote out of 21.
It is not an answer on its own
If one indicator could call tomorrow, everyone would use only that one. TickTurn asks 21 of them together not because any single one is trusted, but to show plainly where they disagree. Even the combined score, measured against the right baseline, came out only a shade better than chance — the scoring is written up in how we tested.