Cyber Cycle

Cyber Cycle filters price down to its tradable swing component and plots it as a zero-centered oscillator beside a trigger line — the previous bar's cycle value — whose crossings time entries near the cycle's turning points. The definitive clean build of John Ehlers' Cyber Cycle filter, it smooths the bar midpoint, screens out the slow trend component with a recursive filter, and colors the result by its side of zero. A Display option switches to the Stochastic Cyber Cycle, which ranks the cycle against its recent extremes and rescales it between -1 and +1.

How to Trade the Cyber Cycle?

• Cycle crosses above Trigger: a potential cycle trough — the low-lag long timing read, covered by the Bullish Crossover alert.
• Cycle crosses below Trigger: a potential cycle crest, mirroring the read for exits or shorts.
• Stochastic Cyber Cycle beyond ±0.5: the Overbought Level and Oversold Level guides mark stretched readings; entering either zone fires its own alert.
• Swing amplitude: the raw display has no fixed scale, so extremes are judged against recent swing size.

In a strong trend the filter is overrun and counter-trend crossings fail repeatedly, so gate the tool with a regime read.

Cyber Cycle Settings

• Source (default hl2): price fed to the filter — the published code's bar midpoint.
• Alpha (default 0.07): smoothing constant; higher reacts faster but passes more noise.
• Display (default Cyber Cycle): raw unbounded cycle, or the Stochastic Cyber Cycle.
• Stochastic Length (default 8): lookback used by the stochastic variant's ranking.
• Extreme Levels (default enabled, levels 0.5 and -0.5): guides on the stochastic display only.
• Crossover Markers (default disabled): dots at each crossing; the matching alerts fire either way.

Frequently Asked Questions

How does the Cyber Cycle differ from the Fisher Transform?

Both are Ehlers designs aimed at different problems. The Fisher Transform reshapes normalized price so extremes become sharp and statistically meaningful; the Cyber Cycle removes the trend component and trades what remains.

When should I switch to the stochastic display?

Whenever you need extremes that mean the same thing across time. The raw cycle's amplitude changes with the market, so a large reading last month may be modest today; the stochastic variant reads against fixed ±0.5 guides instead.

What is the indicator's main weakness?

Trends. The filter keeps the mid-frequency cycle, and when a persistent trend dominates, crossings fire against it again and again. Confirm that swings are actually round-tripping before trading its signals.