The chart by
@MacroCharts shows an inverse correlation. It would work better if the red plot were flipped upside down to show a positive correlation. Here is an example, using the commercials' net position. Notice also that allowing the plots to intrude into the vertical space of each other, but without stepping on each other, uses more of the chart space for data, allowing the viewer to better see the details vs. having each plot get its own segregated portion of the overall chart.