silviaic said:
Hi Frank,
I just wanted to ask few questions about your calculations, which I think are very interesting.
How do you perform your tests? Do you run a program over records of data? How many? Can you give more specifications about the simulation/test process?
In one of your tests you say:
Isn't this the same as moving your stop loss towards your entry? If not, I think I don't understand the statement...
And finally, I don't understand where your last table with the ratios comes from...
Lots of questions, I know , I know
...Thanks,
Sivia.
Hi Sivia,
I use Strategy Builder FX Ver. 3.86 Build 6414, to run my simulations. I’m using only the Euro/Usd pair.
Test on the 15 minute charts span from 7/1/05 14:45 to about 10/28/05 22:45. More data is added
every day so theses date are just estimations. Which is about 19 thousand bars, e.g. one bar ever fifteen minutes.
The four hour chart spans dates from 7/16/2002 12:00:00 AM to 10/28/2005 8:00:00 PM and finally the day chart spans dates from 9/22/1989 12:00:00 AM to 10/28/2005 12:00:00 AM.
The number of trades taken per time frames fluctuates. The day time frame has about two thousands trades and the 15 minutes charts have only about 60 trades. These are only rough approximations it’s entirely dependent on the probability of a move of x amount of pips in x amount of time.
“With a stop loss twice the size of the profit target cutting the lot size in half after prices have moved half of the way to the stop loss will decreased the return on the account and the probability of winning trades.”
Sorry, about to notes! It’s a bit confusing. It wasn’t meant to be read just yet!!.
What I was testing was profit taking. Once price had moved half way to the stop loss, I would cut the position size in half. The theory behind it was that the probability of price rebounding and moving back to the profit target was greatly reduced and by cutting losses you could hope to achieve a greater return.
And the last table.
The risk reward ratio is.
Stop loss size : Target proft size.
Ex.1
10 pips target and a 20 pip stop loss would be 1:2 R:R ratio.
W/L is the win loss ratio. It’s the winning trades divided by the loosing trades.
Ex.2
75 winning trades / 25 loosing trades is 3.0 or 75% winning trades and 25% loosing trades.
If you like to run the tests yourself here’s to code. I use.
variables : LastBarCount(0);
SetLoopCount(0);
if(TotalTrades == 0 and LastBarCount != bars )then {
LastBarCount = bars;
SetOrder(OP_BUY,lots,Ask,0,Ask-stoploss*Point,Ask+takeprofit*Point,Blue);
}
Hope this helps!
-Frank