Coincidentally, I have placed order Ask DEC 138P @89 x 4 this morning
and Ask DEC 250C @29 x 4
Margin (from the decrease of my buying power, may not be actual) ~$20,000 for 4 sets => $5,000/set.
Assume 138P @85 / 125C @24 (current bid), the whole set collect $5,000+ premium.
It is a 100% ROI ($5,000 on $5,000)!!
Leave 3 times reserved margin, i.e $20,000 per set, ROI down to 25%,
or something like 50% p.a.
Current DEC HSIF ~ @19550, so it is away 5450pts from upside and 5750pts from downside.
DEC 138P @85 IV 31.6 Delta -0.05
DEC 250C @24 IV 17.3 Delta 0.03
P.S. Max margin need per set can be equal to 1 HSIF, i.e around $60,000.
