indicator · own pane · open source

Aroon

Deepwick · @deepwickv1Updated 2 Oct 2026▲ 0 users

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About

Aroon Up / Down — measures how many bars since the last N-bar high (Up) and low (Down). Values close to 100 mean a fresh extreme, close to 0 mean a stale one.

Up above 70 + Down below 30 = strong uptrend; the opposite = strong downtrend.
Both lines below 35 = range-bound; expect a breakout soon.

Source code

//@version=5
indicator("Aroon", overlay=false)
len = input.int(25, "Length", minval=2)
aroonUp = 100 * (len - ta.highestbars(high, len)) / len
aroonDn = 100 * (len - ta.lowestbars(low, len)) / len
hline(70, "Strong", color=color.gray, linestyle=hline.style_dashed)
hline(30, "Weak", color=color.gray, linestyle=hline.style_dashed)
p_Aroon_Up = plot(aroonUp, "Aroon Up", color=color.green, linewidth=2)
p_Aroon_Down = plot(aroonDn, "Aroon Down", color=color.red, linewidth=2)
alertcondition(ta.crossover(aroonUp, 70) and aroonDn < 30, "Aroon bullish extreme", "Aroon Up crossed 70 with Down under 30")
alertcondition(ta.crossover(aroonDn, 70) and aroonUp < 30, "Aroon bearish extreme", "Aroon Down crossed 70 with Up under 30")

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