sold call to open 3月6号
TGT @76 价格1.83
TGT的premium还不错,(1.83-(77.1-76))/1.83=40%
The calculation is correct. However, the number is only an indication of the distance of the strike price to current price.
You can find the 40%-premium option for any stock. And the ATM options are always 100%-premium. But it doesn't tell you anything.
A better way to choose a rich-premium option is to calculate the proportion of the ATM put with certain time left, say one month, in the underlined stock current price.