Moving Average (MA) is the oldest and most widely used trend-following indicator in financial market trading.
It is said to have been first applied during World War II. The pioneers credited with developing the Moving Average are Richard Donchian and J. M. Hurst.
Today, several standard MA variants are available in every trading platform and analytical software — along with countless custom filters built on or derived from moving average logic.
Moving Average (MA) — a lagging indicator that smooths price action and helps identify trend direction. It calculates the mathematical average of an asset’s price over a specified period.
Formula for Moving Averages
The Simple (or Arithmetic) Moving Average (SMA) is calculated as the sum of closing prices over a given number of periods (e.g., 9 or 26 days), divided by that number of periods.
SMA = SUM (CLOSE (i), N) / N, where:
- SUM — sum;
- CLOSE (i) — closing price of the current period;
- N — number of calculation periods.
Types of Moving Averages
There are several types of Moving Average used in technical analysis: Simple, Exponential, Smoothed, and Linear Weighted.
- Simple Moving Average (SMA) calculates the arithmetic mean of closing prices over a defined number of periods. As it treats all periods equally — regardless of recency — SMA is inherently lagging.
- Exponential Moving Average (EMA) assigns greater weight to more recent prices, reducing lag. Experts at fortraders.org note that EMA adds a portion of the current closing price to the previous EMA value. It is the most widely used MA variant — responsive without being overly volatile like WMA.
- Linear Weighted Moving Average (WMA) is the most reactive MA type, assigning highest weight to the most recent price. Its sensitivity generates many false signals, so traders rarely use it alone.
Learn more about MA calculation methods
MA Parameters
Period
Period is the most critical MA parameter — it defines how many bars are included in the calculation. Larger values produce smoother, slower-reacting lines.
Short periods work well on lower timeframes, capturing near-term price action and enabling quick trader responses — but may generate frequent false signals.
A very long period introduces significant lag and reflects outdated historical data. Such MAs are typically used as long-term support/resistance levels.
Traders commonly combine multiple MAs representing different time horizons. Popular period settings include:
- Short-term trading — 6, 9, 13, 21, 26;
- Medium-term trading — 30, 50, 62;
- Long-term trading — 100, 144, 200.
These numbers reflect key calendar intervals (e.g., trading days per year).
Apply To…
Another adjustable parameter is “Apply to…”, which determines whether the MA is calculated using open, close, high, low, or other bar-based price points. While options vary, differences in visual output are usually minor. This setting may matter for scalping, but has little impact on longer-term strategies. The most common choice in forex is “Close”.
How to Trade Using Moving Averages
As a trend-following indicator, Moving Average forms the basis of primarily trend-based strategies. Traders use many signal variations — but three core approaches dominate.
- Indicator slope reveals the prevailing trend: upward slope = uptrend, downward slope = downtrend, flat = sideways (range-bound) market.
- Crossovers between MAs of different periods: A buy signal occurs when the shorter-period MA crosses above the longer one; a sell signal occurs when it crosses below.
- Support and resistance levels: Longer-period MAs often act as dynamic support (in uptrends) or resistance (in downtrends). A confirmed break through such a line signals continuation in the breakout direction. Optimal period selection varies by instrument — careful calibration is essential.
Moving Averages are most effective when combined with other indicators and oscillators.
Custom Indicators Based on Moving Averages
Due to its foundational role, the Moving Average underpins dozens of proprietary and enhanced indicators — many designed to reduce lag or improve signal reliability. Below is a curated selection of advanced MA-based tools available at fortraders.org (updated regularly). Experiment and share your most effective variants.
Scalper Cluster Moving Averages — Trend Trading Indicator
Index Moving Average — Leading Trading Indicator
AMA SSL 4C AA MTF TT [MK] — Arrow Indicator
- AMA STL Color — Trend Trading Indicator
- VARMA (VMA) — Trend Trading Indicator
- McGinley Dynamic — A Smarter Alternative to MA
- STAR 13×68 MAs TT — Arrow Trading Indicator
- Chin Chan TT — Arrow Trading Indicator
- Collection of Moving Average-Based Indicators
FAQ
What is the difference between SMA and EMA?
SMA gives equal weight to all prices in the period; EMA prioritizes recent prices, making it more responsive and less lagging.
Which MA period is best for day trading?
Common short-term periods include 9, 13, or 21 — but optimal settings depend on instrument volatility and timeframe; test on your chart.
Can Moving Averages be used alone for trading?
Yes, but they’re most reliable when combined with momentum oscillators (e.g., RSI, MACD) or volume analysis to filter false signals.
