nickel up last night

So please tell me Tom,why has jbm sp gone down.
As I stated in a previous post,but you disagreed,this has happened a few times over last few weeks and today it's happened again that even you can see.
Nickel up over 4% and jbm down a few cents.
Be interesting to see what would happen to sp if there was a large drop in nickel price.
I guess bargain hunters would step in eventually.
Oh,I now have the reason for todays drop, profit takers and also the fact that the sp doesn't always just go in the 1 direction,lol, heard it all before,cheers,brucey