explain

F-Five

USDJPY predict to pullback, set pending order Sell limit 110.250 Sl 110.350 Tp 109.9 Disclaimer on, have a nice trade

Frankco

I am comparing this two pairs to see the correlation between them. Most of the time, they corresponded to each other. But It seems to me that GBPUSD is kind of moving ahead of GBPCAD a few days. Sometimes, they doest not corresponded at all. (eg: Financial Crisis about 2008) Can anyone explain this phenomenon to me? Appreciated!