BYD electronic
Day	Price	Geometric return	STD Dev	Volatility
23-Apr	45.6	0.024418527	0.02567146	40.752%
22-Apr	44.5	-0.003365118
21-Apr	44.65	-0.017758513
20-Apr	45.45	-0.022839492
19-Apr	46.5	0.055262679
16-Apr	44	0.00113701
15-Apr	43.95	0.007995474
14-Apr	43.6	0.004597709
13-Apr	43.4	-0.01939593
12-Apr	44.25	-0.031148236
9-Apr	45.65

Assume you had sold a 1-month at-the-money put option(for 1000shares) on your second stock (i.e. the stock based on the last numerical digit of your Student ID). Based on the same set of data from part (a), what would be your worst payoff in one month at 99% confidence level?