So yeah... I trade USD/CAD and I have SPY and EWC streaming quotes while I do. To be honest, I having trouble finding any reasonable correlation at all. Price action is the only thing that seems to work for me. Yet still, I don't want to be a pure price action trader. Anyone have any tips on how to use the stock indices to trade currency pairs? and what about the yields? they are not fuckin streaming and they update once a day. i don't even know when they update it. how is that going to help with my trading?