I bet, for each, you know exactly why you have an edge. The example you provided sounds like arb play, if I understood correctly.
There are risk-positions that are essentially pure arbs but with variation margin. The issue is that they are cap-constrained ($100K to $500K notional).
I read that Forbes article before you had posted it, but I added when you reminded me. I won't say what it was worth as you'll want a cut. 650K