Quote from riskarb:
The 20d puts are trading 1250 basis / 20d calls. I would sell the put backspread and match gamma:
Long the 75p x short*3 65p
If trading a stock combo:
Short 100 shares x short 4[or 5] 65p, 4 if slightly bearish, 5 for a neutral position here at $74 on shares.
got it , thanks a lot