The Dark Cloud Cover is a bearish candlestick pattern that signals a potential reversal in an uptrend. It consists of two candlesticks and is a key indicator in technical analysis. Here are its main components:

1. First Candlestick (Bullish Candle): The initial candle in the Dark Cloud Cover pattern is a long bullish (green or white) candle, representing the market's upward momentum. This candle reflects the dominance of buyers, setting a bullish tone.

2. Second Candlestick (Bearish Candle): The second candle opens above the high of the first candle, creating a gap up, which initially indicates continued bullish sentiment. However, this candle closes well within the body of the first candle, ideally covering at least 50% of it. The bearish close signals that sellers have taken control, creating a reversal signal.

3. Volume and Confirmation: Higher-than-average volume in the second candle can strengthen the pattern, showing significant selling interest. Traders often wait for further confirmation, like a lower close in the next session, before taking action based on this pattern.

The Dark Cloud Cover is considered stronger if it appears after an extended uptrend or near resistance levels, making it a tool for traders to anticipate potential price declines.