QuanTAlib/lib/momentum/_index.md

Momentum

"Momentum tells you how fast price is moving. Whether that movement has meaning: entirely different question." Unknown

Momentum indicators measure the velocity and acceleration of price changes. Unlike trend indicators (which answer "where is price going?"), momentum indicators answer "how fast?" and "is it slowing down?". This distinction matters: a strong trend can have weakening momentum (divergence), and a ranging market can show momentum spikes (false breakouts).

Indicators

Indicator	Full Name	Description
BOP	Balance of Power	Measures buyer/seller strength by comparing close to open relative to range.
CCI	Commodity Channel Index	Measures price deviation from statistical mean, identifies cyclical turns.
CFB	Composite Fractal Behavior	Measures trend duration and quality via fractal efficiency across 96 time scales.
CMO	Chande Momentum Oscillator	Momentum using both up and down changes, bounded but not clamped like RSI.
MACD	Moving Average Convergence Divergence	Relationship between two EMAs, identifies momentum and trend direction.
MOM	Momentum	Raw price change over specified period.
PMO	Price Momentum Oscillator	Double-smoothed ROC oscillator.
PPO	Percentage Price Oscillator	MACD expressed as percentage for cross-instrument comparison.
PRS	Price Relative Strength	Performance ratio between two assets.
ROC	Rate of Change	Absolute price change over N periods.
ROCP	Rate of Change Percentage	Percentage price change over N periods.
ROCR	Rate of Change Ratio	Price ratio over N periods.
RSI	Relative Strength Index	Speed and change of price movements, bounded 0-100.
RSX	Relative Strength Quality Index	Noise-free RSI using cascaded IIR filters, zero lag at turning points.
TSI	True Strength Index	Double-smoothed momentum oscillator.
VEL	Jurik Velocity	Market acceleration via PWMA vs WMA differential.