Trader Leon Montana works on the floor of the New York Stock Exchange stocks NYSE worry AP Photo/Richard Drew. The S&P 500 is at risk of developing a bearish head-and-shoulders top, Bank of ...

Tesla Motors’ stock’s latest bearish technical signal, a head-and-shoulders reversal pattern, warns of a potential selloff of roughly 25% that would send it to the lowest level since January.

The S&P 500 is at risk of developing a bearish head-and-shoulders top, Bank of America said. The S&P 500 could fall as much as 15% to 3800 if the bearish pattern successfully develops.

A head and shoulders pattern on a stock chart includes three peaks with the middle being the highest. It’s been a reliable indicator of a coming bull-to-bear reversal. Learn more.

A bullish chart pattern in small-cap index Russell 200 index suggests that the broader market may have a lot more room to run beyond its record levels, according to Asbury Research.

The head and shoulders pattern forms when a stock's price rises to a peak and then declines back to the base of the prior up-move. Then, the price rises above the previous peak to form the "head ...

Facebook may succumb to growing controversy, completing the last stage of a head and shoulders breakdown that targets the $130s. ... when the stock fell more than 25% in a month.