I used to trade the Treasury Basis, and you'll need more than just the underlying in your account in terms of margin.
Much love to all you guys who replied to the OP, but can I politely ask you guys to delete your posts and how do I put this nicely...shut the fuck up. Much love guys. @ScroogeMcDuck Everyone else is right, I lend Bitcoin and the rates are not 8%. You do not understand what is going on. This is not an oil storage trade.
sooner or later, edge will leak anyways. But because this is ET, it will take a year or two until people figure it out.