if history is any guide there may be trouble ahead for shares of sba communications nasdaqsbac a socalled death cross has formed on its chart and not surprisingly this could be bearish for the stock what to know many traders use moving average crossover systems to make their decisions when a shorterterm average price crosses above a longerterm average price it could mean the stock is trending higher if the shortterm average price crosses below the longterm average price it means the trend is lower why its important the 50day and the 200day simple moving averages are commonly used the death cross occurs when the 50day moves below the 200day this could mean the longterm trend is changing that just happened with sba communications which is trading around 30354 at publication time instead they use it as a signal to start looking for short positions based on other factors like price levels and company fundamentals  events for seasoned investors this is just a sign that it might be time to start considering possible short positions with that in mind take a look at sba communicationss past and upcoming earnings expectations also consider this overview of sba communications analyst ratings do you use the death cross signal in your trading or investing share this article with a friend if you found it helpful this article was generated by benzingas automated content engine and reviewed by an editor