Okay, my option on NKTR expired today, 9 days after I sold it. Does anyone have an idea how to calculate the annual return on it? I got $894.92 after commissions for 9 days.
The only way it seems to be worth calculating is to assume the cost of the stock if it was to be assigned would the basis and that plus the earnings is the other figure to do the calculations with. Doing this I came up with ~404% annual return.
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