The Dragonfly Doji is a candlestick whose open, close and high are at or near the same level, with a long lower shadow and no upper shadow. It shows that sellers drove the price well lower during the session but buyers pushed it all the way back to the open, and after a downtrend or at support it is read as a sign of a possible bullish reversal that needs confirmation on the next bar.
Candlestick Basics
Are you candlestick-literate? The widely used candlestick chart is easy to read but also contains some less obvious but valuable
clues about momentum and reversal.
Candlesticks, Japanese - Technical Analysis from A to Z
In the 1600s, the Japanese developed a method of technical analysis to analyze the price of rice contracts. This technique is called candlestick charting. Steven Nison is credited with popularizing candlestick charting and has become recognized as the leading expert on their interpretation. I have met investors attracted to candlestick charts by their mystique - maybe they are the "long-forgotten Asian secret" to investment analysis.
Candlestick Basics
Candlesticks, Japanese - Technical Analysis from A to Z