Hello I'm interested to start arb between the gold and the silver on the oanda. But i don't know how much gold and silver units i have to buy/sell for perfect hedge. Currently gold costs 910 Currently silver costs 17.5000 So i divide gold price by silver (910/17.5) and i have 52x different. I bought indicator for the metatrader who, after calculating, shows the silver chart on the gold chart and of course it shows deviations between metals. But there is one problem, I don't know how much units should I buy? I googled and i dont found any informations about this.