So suppose I buy iron ore on spread betting account and I receive interest on this daily (credited), can this flip and can I be debited if the futures price goes on the other side of the spot price? Or for a certain commodity (like iron ore) will I always be credited for going long because the futures price will always be on a certain side of the spot price (always will be higher/lower)?
Could you also clarify which side (higher/lower) the spot price has to be in relation to the futures price in order to be credited?
Thanks for your time. Sorry for this question, I'm new