Quote from amc3141:
MAV,
this ratio spreading of the iron butterfly is something that never occurred to me, [probably cause i'm in energies, and it would never occur to me to spread say spot February heating oil flies against April flies . . .it gets cold in February, not so much in April, so the two expirations wont necessarily move in sync]
but typically, in a backwardated commodity market, [i.e nearby future premium to deferred] the ratio fly will allow for SOME extra strangles to be carried [maybe not 2 to 1 for the deferred strangles to the spot strangles,but maybe something like 1.3 to 1]
could one say that one could construe the extra deferred strangles as an implicit measure of the correlation coeff twixt the nearby and deferred?