Momentum
Definition
Momentum measures the rate of change in price over a specific time period. Strong momentum indicates the trend is likely to continue, while declining momentum suggests potential weakening or reversal. Momentum indicators include RSI, MACD, Stochastic, and the Rate of Change (ROC). Momentum trading strategies aim to capitalize on the continuation of existing price trends.
Related Terms
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Support
Support is a price level where buying pressure is strong enough to prevent the price from declining further. It acts as a floor where demand exceeds supply, causing the price to bounce upward. Support levels are identified using previous lows, trendlines, moving averages, and Fibonacci retracements. A break below support often signals further downside momentum.
Resistance
Resistance is a price level where selling pressure is strong enough to prevent the price from rising further. It acts as a ceiling where supply exceeds demand, causing the price to reverse downward. Resistance levels are identified using previous highs, trendlines, and technical indicators. A decisive break above resistance can signal a bullish continuation.
Trend
A trend is the general direction in which the price of an asset is moving over time. An uptrend consists of higher highs and higher lows, while a downtrend features lower highs and lower lows. Trends can be short-term, medium-term, or long-term. The adage 'the trend is your friend' reflects the strategy of trading in the direction of the prevailing trend.
Trendline
A trendline is a straight line drawn on a chart connecting two or more price points, used to identify and confirm the direction of a trend. An ascending trendline connects higher lows in an uptrend, while a descending trendline connects lower highs in a downtrend. A break of a trendline often signals a potential trend change or acceleration.
Moving Average
A moving average (MA) is a technical indicator that smooths price data by calculating the average closing price over a specified number of periods. It helps identify trend direction and potential support/resistance levels. The two most common types are the Simple Moving Average (SMA) and the Exponential Moving Average (EMA). Crossovers between different MAs generate popular trading signals.
Simple Moving Average (SMA)
The Simple Moving Average calculates the arithmetic mean of closing prices over a defined period. A 200-period SMA, for example, averages the last 200 closing prices and is widely used to determine long-term trend direction. SMAs give equal weight to all data points, making them smoother but slower to react to recent price changes compared to exponential moving averages.
Exponential Moving Average (EMA)
The Exponential Moving Average gives greater weight to recent prices, making it more responsive to new information than the SMA. The 20 EMA and 50 EMA are popular choices for short-to-medium-term trading. EMAs react faster to price changes, which can be advantageous for identifying early trend shifts but may also produce more false signals in choppy markets.
RSI (Relative Strength Index)
The Relative Strength Index is a momentum oscillator that measures the speed and magnitude of price changes on a scale of 0 to 100. Readings above 70 indicate overbought conditions, while readings below 30 suggest oversold conditions. Developed by J. Welles Wilder, the RSI is used to identify potential reversals, divergences, and trend strength confirmation.
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