Resistance at 850 levels. Sell 850CE, CMP - 23. Lot Size - 1400 Max Profit - 32,200 Loss only if expires above 873. Or exit once Stock is closes above 850. Theta is around 70, there are high chances if stock doesn't closes above 830 in next five session. Premium will be below 820. Will do adjustments if required, for now buying it as a naked CE short.