Moving Average

FundamentalTechnical Analysis2 min read

Quick Definition

A calculation that averages a security's price over a specific number of periods, smoothing price data to identify trends.

What Is Moving Average?

A moving average (MA) is a technical indicator that smooths price data by calculating the average price over a specific number of periods. It helps identify trend direction and potential support/resistance levels.

Types of Moving Averages:

1. Simple Moving Average (SMA):

  • Equal weight to all periods
  • Formula: Sum of prices / Number of periods
  • Example: 50-day SMA = Sum of last 50 closes / 50

2. Exponential Moving Average (EMA):

  • More weight to recent prices
  • Reacts faster to price changes
  • Popular for short-term trading

3. Weighted Moving Average (WMA):

  • Linear weighting (most recent = highest weight)
  • Middle ground between SMA and EMA

Common Periods:

  • Short-term: 10, 20 periods (fast)
  • Medium-term: 50 periods (intermediate trend)
  • Long-term: 100, 200 periods (major trend)

Trading Applications:

  • Trend Identification: Price above MA = uptrend, below = downtrend
  • Support/Resistance: MAs often act as dynamic S/R
  • Crossovers: Golden Cross (50 crosses above 200) = bullish
  • Death Cross: 50 crosses below 200 = bearish

Limitations:

  • Lagging indicator
  • Works better in trending markets
  • Can give late signals

Formula

Formula

SMA = (P1 + P2 + ... + Pn) / n

Moving Average Example

  • 150-day SMA crossing above 200-day SMA (Golden Cross) is bullish
  • 2Stock bouncing off 200-day moving average as support