NADEX 50 at the bid and 50 at the ask ? I am just curious as to what the 50's represent exactly ? I imagine this is NADEX's way of showing the " MAX " amount of open interest for that particular BullCall spread ? I have Demoed trading the BullCall spreads on NADEX twice now, and always tried to enter the BullCall's At The Market, as I wanted an immediate fill , and noticed that it seemed to max out at 50 on either the bid and or the ask. My strategy wih trading the spreads, was to find the 8 Hr or the Daily spread ( which ever had a floor ( for Long ) or ceiling ( for going short ) , as close to the price of what that particular Future was trading at , at the time I was looking to Enter the market ...... always having is little risk as possible ( hence buying as close to where the Market was trading at, at the time I looked to enter it ) But sometimes I wouldn't get immediate fills, and wondered if this was do to there NOT being a " 50 ) on the side I was trying to enter on .... the Ask for going Long and the Bid if I was looking to go short Thanks for anyone who can shed some light on my question at hand, I appreciate it