You can read more about riskarb's double butterflies here:
http://www.kaininito.com/options/articles/
The problem with these is that right now, with such low vol, the middle of the double fly dips below the zero line....
http://www.kaininito.com/options/articles/
The problem with these is that right now, with such low vol, the middle of the double fly dips below the zero line....
Quote from riskarb:
Sure, for something that's passive; combo-atm butterflies -- take the Nov 1175 SPX strike and structure a bull and bear call and put fly w/long outright and curvature[gamma]:
Long 1175/1200/1225 call fly
Long 1175/1150/1125 put fly
Flies carry the best attributes of gamma -- short concavity, long convexity of curvature. You're holding a superior risk-reward and there is no need to adjust unless you're attempting to bank gains.
No risk atm, only 2sigmas up/down at expiration for a small debit.

