Friday DVN completed a "Long Day". A long day represents a large price move from open to close, where the length of the candle body is long. Long white candlesticks show strong buying pressure. The longer the white candlestick is, the further the close is above the open. This indicates that prices advanced significantly from open to close and buyers were aggressive. Long white candlesticks are generally bullish.
Candlesticks with short shadows indicate that most of the trading action was confined near the open and close (see chart).