Originally based on a script by HPotter for an ATR Trailing Stop, which itself was based on an article by Sylvain Vervoort, but I adapted it to add Bands, to add extra optional Wick Protection, and have now made it a Strategy. It's not great for entries/exits, but as a Trailing Stop that can let winners ride, it's great.
Open-source script
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules.
You can favorite it to use it on a chart.
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