Marubozu
A marubozu is a candlestick with no wicks at all, or only extremely small ones, meaning the opening price and closing price sit at or very near the extreme high and low of the session. A green, or bullish, marubozu opens at the low of the session and closes at the high, while a red, or bearish, marubozu opens at the high and closes at the low.
The name comes from a Japanese word roughly meaning bald or shaved clean, describing a candle with nothing left over at either end. A marubozu signals that one side, buyers or sellers, was in complete control for the entire session, with no meaningful pushback from the other side at any point, unlike most candles, which show at least some wick reflecting a brief move in the opposite direction before the close.
A bullish marubozu appearing after a period of consolidation or a is often read as a strong signal that buyers have decisively taken control, and traders watch for continuation in that direction over the following sessions. A bearish marubozu is read the same way in reverse, as a sign of decisive selling control. Because the pattern reflects a session where one side stayed fully in control throughout, it is generally treated as a stronger signal of conviction than candles with meaningful wicks in either direction.