Quote from acdtrader:
Maverick74 - agree with what you have to say. The OR stop is too wide. However here is my thought process, and please feel free to critique what you think.
Let say: Lets say the OR is high / low of the day -> 30% of the time and every time I bet in the direction of the OR breakout, lets say I win $5. On the other hand, 70% of the time trades are either flat or I get stopped out and lose $2 in those stopped out trades.
Hence my expectancy on this trade over a long period of time would be: 0.3 X $5 + 0.7 X (-2) = $0.1 (lets ignore trading costs for now)
Its a very small edge, but If I could make this bet 1 million times across similar instruments that exhibit this property where the OR is significantly the high/low of the day than days when its not - that would be a good risk reward system.
Not to forget, we can factor in other conditions such as + / - days, number line etc that might increase the expectancy.
Hence - delving into the OR stats.
Currently I use a factor of volatility to put out my stops, sometimes its below the OR low and sometimes above the low for long trades. Its different from how Fisher teaches in the book, but in my experience - when the stops are too tight, one gets stopped out and if they are too wide, you are taking a lot of failed Aups thinking of them as AUp breakouts. Thats where your experience as a trader comes in maverick (which is what you have focused on sharing throughout the blog talking about how the ACD methodology vs a set of rules that one programs) - machines cant think, but they are very disciplined.
I think a better study would be to look at the number of times a confirmed A up or confirmed A down closes at or near the highs or lows of the day respectively in order to calculate expectancy. The problem I have with simply testing the robustness of the OR high or low is that one can get killed getting stopped out of trades well inside the OR especially in high volatility markets.
I think what you want to test is "follow through". A while back a buddy of mine tested this on trade station and it was indeed proven that confirmed A trades at the very minimum hit the ATR a majority of the time. This gives you something to work with as you are no longer testing whether or not you will be stopped out but whether or not the trade actually has "follow through" to the ATR.
The other benefit this study has it that it negates the importance of OR time frames since what we are testing is follow through to the ATR, we no longer need to worry whether one uses a 5 min or a 30 min OR as the ATR level should be constant. This keeps things much more clean.
