HDFC at last close is at 1755
Going by the options activity and the traders footprints on the chart, it seems more likely to target 1779-1789-1799 in the coming sessions.
Stop loss could be at 1740.
If you feel like it short the DITM 1800 OCT PUT and hedge it with OTM 1800 OCT CALL.
If you are lucky enough and HDFC stays afloat 1800+ in october series you may end up making 23,000/- on a margin of approx 90,000/- a clean 26% within two weeks ....
Happy Trading !!!