Glossary
Golden cross
A chart signal where the 50-day moving average crosses above the 200-day moving average, read by some as a bullish shift.
On this page
A golden cross occurs when a shorter-term moving average of price, conventionally the 50-day, crosses above a longer-term one, conventionally the 200-day. It indicates that recent prices have risen enough to lift the short-term average past the long-term trend line. Financial media treat it as a sign of an improving trend in a stock or index; its mirror image, the 50-day falling below the 200-day, is the death cross.
How it works
Both lines are usually simple moving averages of daily closes. The cross itself is mechanical: on the day the 50-day value moves from below to above the 200-day value, the signal fires.
How useful is it?
The golden cross is a lagging, trend-confirming signal, not a forecast. Its strengths and weaknesses follow from that:
- It filters noise. Requiring two slow averages to cross avoids reacting to every short rally.
- It is late. Much of a rebound has usually happened before the cross, and in sharp V-shaped recoveries it arrives well after the low.
- It whipsaws in ranges. In sideways markets the averages can cross back and forth repeatedly, producing a string of false signals.
- Parameters are arbitrary. 50 and 200 are conventions; other lengths or exponential averages give different dates.
Studies of the signal on broad indexes generally find modest, inconsistent edges once realistic costs and the lag are included, so many traders use it as context for trend direction rather than as a trigger.