One of the effects of using moving averages such that trend lines cross each other and assume the shape of a cross.
A golden cross is a graphical representation of a market trend whereby two term-based moving averages intersect and take the form of a cross. More specifically, the golden cross emerges when a short-term moving average intersects with a long-term moving average during a technical analysis. This trend is interpreted in technical analysis as indicating that prices will continue to rise for a long time.
A golden cross is the exact opposite of a death cross. The former is taken by market analysts and traders as representing a long-term bull market, while the latter is interpreted as representing a long-term bear market.