Does anyone know how to chart the Bund vs. T-note (ZN) spread (or have links to other discussions)? NOT THE HEDGE RATIO!! I am currently using CQG and use the yield function instead of price. When back testing various trades, 1bp move in the spread show varying $ values. More than I would expect despite the changing DV01s for each contract (the hedge ratios don't massively change day in day out). Would love any insight.