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When you step into a mall to buy something, you may hear conflicting recommendations. You know what you need, but you haven't decided what to buy yet. Take buying clothes as an example. How do you know which one best suits you? Salesm...

Candlestick patterns, which are formed by either a single candlestick or by a succession of two or three candlesticks, are some of the most widely used technical indicators for identifying potential market reversals or trend change.
Doji candlesticks, for example, indicate indecision in a market that may be a signal for an impending trend change or market reversal. The singular characteristic of a doji candlestick is that the opening and closing prices are the same, so that the candlestick body is a flat line. The longer the upper and/or lower "shadows", or "tails", on a doji candlestick – the part of the candlestick that indicates the low-to-high range for the time period – the stronger the indication of market indecision and potential reversal.
There are several variations of doji candlesticks, each with its own distinctive name, as shown in the illustration below:
The typical doji is the long-legged doji, where price extends about equally in each direction, opening and closing in the middle of the price range for the time period. The appearance of the candlestick gives a clear visual indication of indecision in the market. When a doji like this appears after an extended uptrend or downtrend in a market, it is commonly interpreted as signaling a possible market reversal, a trend change to the opposite direction.
The dragonfly doji, when appearing after a prolonged downtrend, signals a possible upcoming reversal to the upside. Examination of the price action indicated by the dragonfly doji explains its logical interpretation. The dragonfly shows sellers pushing price substantially lower (the long lower tail), but at the end of the period, price recovers to close at its highest point. The candlestick essentially indicates a rejection of the extended push to the downside.
The gravestone doji's name clearly hints that it represents bad news for buyers. The opposite of the dragonfly formation, the gravestone doji indicates a strong rejection of an attempt to push market prices higher, and thereby suggests a potential downside reversal may follow.
The rare, four price doji, where the market opens, closes, and in-between conducts all buying and selling at the exact same price throughout the time period, is the epitome of indecision, a market that shows no inclination to go anywhere in particular.
There are dozens of different candlestick formations, along with several pattern variations. It's certainly helpful to know what a candlestick pattern indicates – but it's even more helpful to know if that indication has proven to be accurate 80% of the time.