CMO: Chande Momentum Oscillator Explained

Tushar Chande's Chande Momentum Oscillator (CMO) answers the same question as RSI — who's winning, buyers or sellers? — but with rawer math: it sums up-day gains and down-day losses over the period and nets them out on a −100 to +100 scale, with no smoothing at all.

How CMO Works

Over the default 14 periods:

• +50 and above: buyers dominated decisively — overbought territory.
• −50 and below: sellers dominated — oversold.
• Zero: perfect balance between up and down movement.

Because CMO skips RSI's internal smoothing, it reaches extremes faster and more often — sharper signals, more noise.

CMO vs RSI

• RSI smooths gains and losses; CMO uses them raw.
• RSI is bounded 0–100 with 70/30 lines; CMO is ±100 with ±50 lines.
• CMO at zero equals RSI at 50 — both mark the momentum midline.
• Practical upshot: CMO is the better trigger, RSI the better filter.

How to Trade It

1. Extreme fade. In ranges, buy the turn back up from below −50, sell the turn down from above +50.

2. Zero-line trend gate. Above zero = long bias, below = short bias — combine with your entry logic.

3. Volatility proxy. Chande also used CMO's absolute value to drive adaptive averages: high |CMO| = trending. That's exactly the mechanism inside VIDYA in our extended library.

Building It in Setup.Cash

Add CMO in the strategy builder and condition on the ±50 levels or the zero cross. It pairs well with a slower regime filter like KAMA or TRIX, letting CMO handle the timing.

Tuning

• 14: standard.
• 9: aggressive scalping trigger.
• 20+: smoother, better for the zero-line regime reading.

Backtest CMO and RSI side by side with identical rules — on most markets one clearly outperforms, and it isn't always the famous one.