Hello, These instruments are fairly correlated. If one was attempting to create a "rough" hedge betwen those instruments what would be the best approach to calculate the hedge ratios. So for example, if you ar elong 1 ZB, how many ZT should you short? In essence what would be hedge ratios for ZB:ZN ZB:ZF ZB:ZT ZB:ED ZN:ZF ZN:ZT ZN:ED ZF:ZT ZF:ED ZT:ED Agian I stress i know in addition to correlation there are other factors, duration, volatility, liquidity, etc...but for these purposes I am just looking for an appropriate "rough" hedge ratio. I also know thare are many methods, simple to complex to calculate these ratios , but I am curious as to what people use. I would expect there would be a quick/simple way to achieve a rough hedge ratio for the six pairs above. Glad to hear people's thoughts on this. Thank you.