Technical & Chart AnalysisRate of Change
Momentum
The rate at which price is changing, used to judge whether a move is accelerating or losing force.
What Momentum means
Momentum describes the rate at which price is changing rather than its level. The simplest momentum indicator subtracts the close of N periods ago from the current close, or expresses the two as a ratio multiplied by 100, so a rising line means the market is advancing faster than it was and a falling line means the advance is decelerating even if price is still rising. Most oscillators, including RSI, the stochastic, CCI and MACD, are elaborations on this basic idea with different smoothing and scaling applied.
Traders use momentum in two conflicting ways. Trend followers treat strong momentum as confirmation and join the move, an approach supported by a long-documented tendency for recent relative strength to persist over intermediate horizons. Mean-reversion traders instead fade momentum extremes. The honest limitation is that momentum is a first derivative of past price, so it necessarily turns after the underlying move has already begun to change, and readings in isolation say nothing about whether a decelerating trend will pause, range or reverse.
Worked example
If EUR/USD closes at 1.0885 and the close 14 periods earlier was 1.0805, the raw momentum reading is +0.0080, or 80 pips, and a decline in that figure on the next swing high would flag decelerating upside.
Related terms
- DivergenceA disagreement between price and an indicator, where one makes a new extreme that the other fails to confirm.
- RSI (Relative Strength Index)A momentum oscillator that measures the speed and magnitude of recent price changes on a 0 to 100 scale.
- MACDA momentum indicator built from the difference between the 12 and 26 period EMAs, with a 9-period signal line.
- OscillatorAn indicator that fluctuates around a centre line or within fixed bounds, used mainly to gauge momentum extremes.
- TrendA sustained directional bias in price, conventionally defined by a sequence of higher highs and higher lows, or the reverse.
Frequently asked questions
What does Momentum mean in forex trading?
The rate at which price is changing, used to judge whether a move is accelerating or losing force.
How does Momentum work in practice?
Traders use momentum in two conflicting ways. Trend followers treat strong momentum as confirmation and join the move, an approach supported by a long-documented tendency for recent relative strength to persist over intermediate horizons. Mean-reversion traders instead fade momentum extremes. The honest limitation is that momentum is a first derivative of past price, so it necessarily turns after the underlying move has already begun to change, and readings in isolation say nothing about whether a decelerating trend will pause, range or reverse.
What is an example of Momentum?
If EUR/USD closes at 1.0885 and the close 14 periods earlier was 1.0805, the raw momentum reading is +0.0080, or 80 pips, and a decline in that figure on the next swing high would flag decelerating upside.
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