As I understand it this is a change in stockpiles of oil.
Meaning this number can be both positive and negative.
Today this number came out at 7Million, twice the expected.
How I understood this is that this is an Oversupply of oil, Price should go down right?
If oil goes down then CAD should go down right?
Except the reverse happened and Oil went up?
Why?
Thanks 
Hi Sermed,
There are many reasons that the price would go up not down. I will not try to speculate as i don’t personally trade oil but just remember this. Most of the major players (Fund traders and banks) have already factored this move in, hours or even days in advance. There will also be a bunch of target and stop levels that get hit as some institutions are asleep.
Perhaps someone can help with more oil related facts?