Moving Averages Explained: How to Use the 50-Day and 200-Day MA to Time Your Trades

What Is a Moving Average and Why Do Traders Use It?

A moving average smooths out price data by calculating the average closing price over a specific number of periods. The 50-day moving average (50 MA) adds up the last 50 closing prices and divides by 50. Each day, the oldest price drops off and the newest is added, creating a smooth line that follows the trend. Traders use moving averages to identify trend direction, find support and resistance levels, and generate buy and sell signals. When price is above the moving average, the trend is generally bullish. When price is below, the trend is bearish.

What Is the Difference Between SMA and EMA?

The Simple Moving Average (SMA) gives equal weight to every price in the period. The Exponential Moving Average (EMA) gives more weight to recent prices, making it more responsive to new information. For the 50-day period, the EMA will react faster to price changes than the SMA. Day traders and swing traders often prefer EMAs for their responsiveness, while longer-term investors tend to use SMAs. The 200-day SMA is the most widely watched moving average on Wall Street — institutional investors, hedge funds, and algorithms all reference it.

What Is a Golden Cross and Death Cross?

A golden cross occurs when the 50-day moving average crosses above the 200-day moving average — a bullish signal suggesting the short-term trend is turning positive relative to the long-term trend. A death cross is the opposite: the 50-day crosses below the 200-day, signaling potential bearish momentum. Historically, golden crosses on the S&P 500 have preceded average gains of 15% over the following 12 months. However, these signals are lagging indicators — by the time a golden cross forms, the market has often already rallied significantly from its lows.

How Do You Avoid False Signals From Moving Averages?

Moving averages work best in trending markets and generate many false signals in sideways, choppy conditions. To filter out noise, combine moving averages with volume confirmation — a breakout above the 50 MA on high volume is more reliable than one on low volume. Use multiple timeframes: if the daily chart shows a bullish MA crossover but the weekly chart is still bearish, the signal is weaker. Many traders also wait for a close above or below the moving average rather than reacting to intraday touches. Adding a secondary indicator like RSI or MACD can help confirm the signal.

What Is the Best Moving Average Strategy for Beginners?

The simplest and most effective strategy for beginners is the 200-day moving average trend filter. Only buy stocks that are trading above their 200-day MA, and avoid or sell stocks trading below it. This single rule would have kept you out of the worst of the 2008 crash, the 2020 COVID crash, and the 2022 bear market. It is not perfect — you will miss the exact bottom and sell after the exact top — but it keeps you on the right side of the major trend. Combine this with the 50-day MA for entry timing: buy when price pulls back to the 50 MA in an uptrend and bounces.