The meaning of annualised return is defined in the AFR web page above as:
The annualised percentage return to the option writer (seller) from the option premium received, (if the option is held by the taker until expiry), calculated on the current price of the underlying security.
I can't get exactly 27.04%, but I can get a figure close to it (27.05%).
BHP Jan 2010 options expire on 28/1/10. That is about 34 trading days from the date of the quote (ie. 11 Dec 2009). The raw return is 1.47/40.5 = 3.65%.
We assume that there are 252 trading days in a year. The raw return of 3.65% is then annualised by
I see the AFR share tables have been changed over the past 1-2months. Does anyone know where I can find (free) on the web all stocks as well as the amount of stock/shares issued with the current sector the share belongs?
AFR had this previously, but now do not add to the share table data.