The Dow Jones Industrial Average is one of the premier US stock indices, comprising a weighted average of the stock prices of 30 of the largest US companies.

The double top graphical price pattern is a sign of a reversal of an existing uptrend. It is considered that the longer the formation of the pattern, the more reliably it indicates a reversal.

The double bottom graphical price pattern is a sign of a reversal of an existing downtrend. It is considered that the longer the formation of the pattern, the more reliably it indicates a reversal.

The doji is a type of candlestick and a warning sign of a pending reversal. The open and close are pretty much equal. The length of the upper and lower shadows can vary and the resulting candlestick looks like a cross, inverted cross or plus sign.