indicator · own pane · open source

Ehlers Cyber Cycle

Deepwick · @deepwickv1Updated 2 Oct 2026▲ 0 users

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About

Ehlers Cyber Cycle — extracts the dominant market cycle with a two-pole high-pass and autoregressive smoothing. Crosses of the trigger line signal phase shifts within the cycle.

Tune alpha smaller (0.07) for longer cycles, larger (0.3) for shorter ones.
Pairs well with the Hilbert Trendline for cycle-aware entries.

Source code

//@version=5
indicator("Ehlers Cyber Cycle", overlay=false)
alpha = input.float(0.07, "Alpha", minval=0.01, maxval=0.5, step=0.01)
src = (high + low) / 2
smooth = (src + 2 * src[1] + 2 * src[2] + src[3]) / 6
var float cycle = 0.0
cycle := (1 - 0.5 * alpha) * (1 - 0.5 * alpha) * (smooth - 2 * smooth[1] + smooth[2]) + 2 * (1 - alpha) * nz(cycle[1], 0) - (1 - alpha) * (1 - alpha) * nz(cycle[2], 0)
trigger = nz(cycle[1], 0)
hline(0, "Zero", color=color.gray)
p_Cycle = plot(cycle, "Cycle", color=color.blue, linewidth=2)
p_Trigger = plot(trigger, "Trigger", color=color.red)
alertcondition(ta.crossover(cycle, trigger), "Cycle up", "Cyber cycle crossed above trigger")
alertcondition(ta.crossunder(cycle, trigger), "Cycle down", "Cyber cycle crossed below trigger")

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