Doji
A doji is a single candlestick pattern where the opening and closing prices for the period are nearly identical, producing a candle with little to no real body, often shown as a thin cross or plus sign shape once the upper and lower wicks are drawn in. It signals a session where price moved around but ultimately closed almost exactly where it opened.
A doji represents a moment of indecision between buyers and sellers. Neither side was able to push the closing price meaningfully away from the open, even if the traded well above or below that level at some point during the session, which is reflected in longer or shorter wicks depending on how far price wandered before settling back near the opening level. Several variations exist depending on where the wicks sit, including a long-legged doji with wicks extending far in both directions and a dragonfly or gravestone doji where nearly all the movement happened on one side.
The significance of a doji depends heavily on where it appears. A doji forming after an extended or is often read as an early signal that the prevailing trend is losing momentum and may be due for a pause or reversal, since it shows the side that had been in control failing to maintain it for a full session. A doji in the middle of a quiet, range bound stretch carries much less meaning, since indecision is simply the normal state of a market that is not trending.