Definition of Candlestick in stock charting

A candlestick is a feature of a price chart which shows the open, close, low and high for an asset over a given time period. They are usually red if the asset closed lower than it opened, and green if it rose over the time period. Other popular color combinations are white / black, and red / blue.

Candlesticks are one of the most frequently used tools in chart analysis for showing trends and volatility.