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What are the common moving averages used in a “Golden Cross” stock evaluation?
Not sure why this hasn't received any answers yet... the link to the investopedia page you posted explains it pretty well, however when you hear about a golden cross in the media, it is most likely a reference to the 50-day SMA crossing above the 200-day SMA.  In general, a golden cross consists of a short term MA that was previously below a long term MA crossing above that LT MA, however the most common reference will imply a 50/200 day cross because this is considered as a stronger signal (compared to shorter MAs). With that said, it's important to realize that the golden cross is just one of many technical analysis "signals", and the entire field of technical analysis is considered controversial, to say the least.  Many studies, such as those examined in A Random Walk Down Wall Street, have found that after transactions costs are considered (e.g., the commissions you pay to your broker on every trade), "charting" is a losing proposition in the end.