Moving Average (50-Day MA) — Stock Market Glossary

Moving Average — 50-Day (MA50)

The 50-day moving average (MA50) is the average of a stock’s closing prices over the past 50 trading days. It’s updated each day as new prices replace old ones — hence “moving.”

Formula

MA50 = Sum of closing prices for the last 50 trading days ÷ 50

Since the market is open ~252 days per year, 50 trading days ≈ 2.5 calendar months.

How Traders Use It

Price vs. MA50	Typical Interpretation
Price > MA50	Short-term uptrend; bullish signal
Price < MA50	Short-term downtrend; bearish signal
Price crosses above MA50	Potential buy signal (“golden cross” with MA200)
Price crosses below MA50	Potential sell signal

MA50 vs. MA200

	50-Day MA	200-Day MA
Sensitivity	More sensitive to recent prices	Slower to respond
Time horizon	Short-to-medium term (~2.5 months)	Long term (~10 months)
Use case	Active traders	Long-term investors
False signals	More frequent	Less frequent

The Golden Cross — when the 50-day MA crosses above the 200-day MA — is widely watched as a long-term bullish signal. The Death Cross — when the 50-day MA crosses below the 200-day MA — is watched as a bearish signal.

How It’s Used on This Site

The 50-day MA appears in the Market Data card on every individual ticker page. Comparing it to the current stock price shows whether the stock is trading above or below its recent trend.

See also the 200-day moving average which is used as a primary filter in the 🔪 Falling Knife strategy.

Moving Average (200-Day) — Longer-term trend indicator
RSI — Momentum indicator often used alongside MAs
52-Week High / 52-Week Low — Broader price context
Beta — Volatility measure; high-beta stocks deviate further from their MAs