just called my broker and learned about "mark to market"...okay...I open A Eurodollars spread today at 5 and it closes at 10 today...5x5 ticks are added to my accout...tomorrow, basing off of my open position start point of 5...if it goes to -5..then 10x10 ticks are subtracted from my account...I THOUGHT I just get a gain or loss when I close out the futures contract spread...hmmm...insight...