Hey Baldwreck,I am sure it is possible to pick holes in the above argument, but for me its about risk control.
The analysis seems quite valid. With your specific trades (congratulations) you got more than double the profits with binaries with not even half the exposure of a spreadbet. (Though the CAC netted 80p less, when I checked, this does not change the result.)
Thus, Binaries may offer a 4-times better deal in terms of exposure ... in this specific example, at least. Q: Does this hold up over many trades?
Also, I accept that risk control is an advantage of binaries. Your $93,51 was your max exposure, and the max potential winnings were even $116,50 - given that you leaned out a bit with a bullish view.
However, I still find it doubtful to put that in direct relation to the spreadbet. Prices could have just risen steadily from 21Jun to 4Jul and your exposure thus nil (ignoring spread) for the implied $40 winning - or they could have tanked and increased your exposure dramatically. And obviously - at least in theory - there is unlimited potential winnings with a spreadbet. Still, any relation is probably best done with actual winnings (as you did).
Fundamentally, your analysis (max. exposure vs. actual winnings) could be a very good indication of the risk management side if you were to take long term binary averages with the corresponding implied spreadbet exposure averages from the intermediate lows.
Now before I start building a Monte Carlo ... is there any number you can throw in from your collection of life trading data?
Last: This may also be the starting point to see how the spread would affect those terrifying 13 % round-trip cost of Steve ...
Bert