A bar chart, also known as an HLOC chart, features vertical bars. HLOC stands for high, low, open, and close. Each vertical bar represents one unit of time. The top of the bar is the high for the period, and the bottom represents the low.
Each bar also has a horizontal notch on the left and another one on the right. The one on the left side of the bar is the opening price for the period, while the one on the right is the closing price.
This extra information is important for price action trading strategies, as a combination of bars can produce a pattern that shows the market is moving in a certain direction.
For example, a long bar with both opening and closing notches near the bottom, followed by a shorter bar with progressively lower opening and closing notches, can signal a downturn. Meanwhile, several bars with the same size and similarly spaced opening and closing notches could signal that a trend will continue.
Traders often use bar charts with overlays like Bollinger Bands or moving averages, which help predict momentum. In addition to forex, these charts are popular among
cryptocurrency traders.