A candlestick chart (also called Japanese candlestick chart) is a style of financial chart used to describe price movements of a security, derivative, or currency. Each “candlestick” typically shows one day, thus a one-month chart may show the 20 trading days as 20 candlesticks. Candlestick charts can also be built using intervals shorter or longer than one day.

Each candlestick represents all four important pieces of information for that day: open and close in the thick body; high and low in the “candle wick”.