In order to accurately read trading charts, you need the opening price, the closing price and the high and low of the day (or whichever timeframe you are using). Candlestick charts are similar to the bar charts as they both display the complete trading range by showing the four important price values: open, high, low, close (OHLC). The main difference is in the body of the chart. After drawing the vertical line to connect the high and the low, just like in the bar chart, and connecting the horizontal dashes, both on the left and on the right, a box is formed. The box is called the body of the candle. The vertical line appearing above the body is called upper shadow. The vertical line appearing below the body is called lower shadow. The body and the shadows form what we call candlestick chart (or candle).