MasoMinos said:
It may well be stupid as I have no better data myself upon which to draw other than my own personal experience of almost 10 years trading options.
This is an excellent read. The study focuses on options purely as an instrument, rather than options in any specific market;
http://www.amazon.co.uk/exec/obidos...12/ref=sr_8_xs_ap_i12_xgl/026-4007754-2953261
In the meantime, have a look at these statistics direct from the horses mouth (the CBOE no less).
Myth #1
http://options2.registeredrep.com/ar/finance_19/
Whilst on the subject of myths, another common myth is open interest. The theory goes that since the writers mostly “win” they drive the underlying toward the point of max profit for the writers, max pain for the buyers. I’ve monitored the OI in the FTSE100 options for over a year can tell you the OI bears no resemblance to the expiry price, not even close sometimes.
If anyone else wants to do the same, explanation of how to calculate here;
http://www.ez-pnf.com/maxpain.htm
Mr. Summa writes;
"While not the entire story, the data suggests overall that option sellers have an advantage in the form of a bias towards options expiring out of the money (worthless).
This I agree with, the key words being “bias towards options expiring out of the money (worthless)”. The reason being that most options are either closed or exercised prior to expiry, with most being closed. This "bias towards....worthless" means nothing and is very misleading.
What is the point in writing half an article ?
MasoMinos said:
Perhaps you'd care to take up Mr. Summa's 'stupidity' with him directly as 'speed of the trend' is quite meaningless. Perhaps you'd care to define? And as '1001 other factors' - non-specificity I can get free just about anywhere. What other factors precisely?
With all due respect Mr. Summa didn’t make it a one line blanket statement – you did.
I thought speed of the trend was self explanatory. Anyway, company ABC rises at 1% per week, company XZY rises at 5% per week, both trends are up. Which company would you rather be long Call options in ? And which company would you rather be short Calls options in ?
For an option buyer to profit not only does he need to get the direction right, but the gain must also overcome the time premium paid, either wholly or in daily theta losses. Reverse that statement for an option seller. But this means diddly squat with regards to “edge”.
Other factors include time to expiry & option IV (join those two up and look at option gamma), distance of underlying from the strike (moneyness), Vol skew (changing IV as underlying moves across Vol surface), Margin requirements (if you’re short), offset positions / hedging (i.e. long equity options / short index options), what's generating the profits / losses is it Delta Theta or maybe vega. That's 7 factors, you need the other 994 ?
MasoMinos said:
in an attempt to head you off from making what I felt to be a wrong conclusion. You then come back to 'defend' a previously undeclared bias.
Either you're looking for discussion and empirical support for any specific view on the question raised - or you're not.
My humble opinion, for what it’s worth, is that there is no advantage in buying options rather than selling them. Neither side has any inherent edge. Of course, I would dearly love to be persuaded otherwise…. with reasoned argument…..