How can I create spread/ratio charts? Investing Support July 29, 2018 12:29 Updated Follow Unfortunately, our charting platforms cannot support spread/ratio charts at this stage. Related articles How do I change the times on the charts? How do I save a chart for future use? Are technical indicators trading signals? Historical Data On Charts How to change the parameters for Ichimoku Indicator? Comments 0 comments Please sign in to leave a comment.