Momentum Indicator
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Momentum Indicator: The Speedometer of Price Action
Updated: 2026-03-01 · Expert Analysis by Senior Trading Analyst · SEO Optimized for Beginners
Executive Summary
The Momentum Indicator is a leading indicator that measures the rate of change of an asset's price over a given period. It compares the current price to the price from 'N' periods ago, providing a clear view of whether the market is accelerating or decelerating.
1. The Concept: What is Momentum?
In physics, momentum is the product of mass and velocity. In trading, "mass" is the volume of trades and "velocity" is the speed of price movement. The Momentum Indicator focuses purely on the velocity. It asks a simple question: "Is the price today higher or lower than it was 14 days ago, and by how much?"
2. Calculation: The Simple Math
The Momentum Indicator is calculated by subtracting the price 'N' periods ago from the current price:
Some platforms use a ratio instead:
Both methods provide the same information: they show the strength of the current trend.
3. Trading the 100-Line (or Zero-Line)
The most basic way to trade momentum is using the center line:
- Bullish Signal: When the indicator crosses from below to above the center line. This suggests that the bulls have taken control and the price is accelerating upward.
- Bearish Signal: When the indicator crosses from above to below the center line. This suggests that the bears are gaining strength and the price is dropping faster.
4. Spotting Divergence: The Warning Sign
Like all oscillators, the Momentum Indicator is most powerful when it "disagrees" with the price. If price makes a new high, but the Momentum Indicator makes a lower high, it tells you that the trend is losing its "velocity." This is often a precursor to a major market crash.
5. Momentum vs. RSI
While RSI is "bounded" (it can't go above 100), the Momentum Indicator is "unbounded." This makes it more sensitive to extreme parabolic moves. Pro traders often use Momentum for short-term "scalping" and RSI for long-term trend analysis.
6. Conclusion
The Momentum Indicator is the simplest and most direct way to measure market strength. It doesn't hide behind complex smoothing or averages; it gives you the raw speed of the market. Use it to confirm your trend entries and, more importantly, to spot when a trend is about to run out of gas.
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