|
PureBytes Links
Trading Reference Links
|
<BLOCKQUOTE
>
<FONT color=#0000ff
size=2>
Joe, here are my
comments on your comments. I'm not sure you understand how the tester
places trades (or doesn't). Read
on.
c. Trade Price -- the v7 tester
allowed you to select the price field(O,H,L,C) for entry and exit and the
delay for each. In other words youcould have different delays
for entry and exit.The v8 tester does not allow different delays for entry
and exit. It usesthe same delay for all entries and exits. The
v8 tester also allowsdifferent price fields for the long and short entries
and exits, which thev7 did not. But there is more you should
know.... read o<SPAN
class=268390717-12052003>n
<SPAN
class=268390717-12052003>
<SPAN
class=268390717-12052003>Joe: V8 does allow for different delays
on the entries and exits. There are two places to do this.
First on the buy/short screen you can set the "Strategic Delay(bars)" or if
you notice on the Trade Execution tab it says "Delay order Opening
XX".
<SPAN
class=268390717-12052003>
<SPAN
class=268390717-12052003>Tom: the Delay on
the Trade Execution Tab applies to all buys/sells. You can't set the Buy
to delay = 1, and the sell to delay = 0 on this
tab.
<SPAN
class=268390717-12052003>
<SPAN
class=268390717-12052003><FONT
color=#ff0000 size=2>The buy/short
screen delays you refer to are in the description of the specific System Test
you wrote. <FONT
face=Arial><SPAN
class=268390717-12052003>They will delay the signal but won't solve
the "take the trade" problem. You will still potentially miss
trades. Actually if you read the manual this is to allow for delays
from your data vendor. When I ran this test using a delay of 1
day for all the executions, I still got a very different answer from
using the Ref() function, which matched my 7.2 results. Frankly I'm
not exactly sure how this approach works, but since it doesn't work like
7.2, I'm not going to spend a lot of time figuring
it out.
<SPAN
class=268390717-12052003>
<SPAN
class=268390717-12052003>With respect to your "% of margin problem", on the
system testing options screen, you may want to change the % of
Available Equity to 50% instead of 100%. This should eliminate the
problems of not having enough to enter the trade. Realistically,
you are probably never going to put 100% of your account into one trade
anyway.
<SPAN
class=268390717-12052003>
<SPAN
class=268390717-12052003>Tom: Changing to 50% of available equity
changes nothing. It just tries to buy with 50% Equity instead of
100%. Let's say you have $1000 equity. Then you get a signal today
and the the price today is $20.00. The system will try to buy 50 shares
tomorrow if you have set at 100%. However if the open price is $20.01,
the order will be cancelled and there will be no trade. Changing
to 50% Equity does nothing. It just means that it will try to buy 25
shares tomorrow. If the open is $20.01 it still will not buy because you
told it to only use 50% of the equity.
<SPAN
class=268390717-12052003><FONT
face=Arial><SPAN
class=268390717-12052003>
<SPAN
class=268390717-12052003>When working with the system tester, I always
recommend putting the "system" into the indicator builder and plotting
out the signals in some sort of "dot" or +1 (long)/-1 (short) format so that
you can double check to make sure everything is working the way you want
before relying on the system tester's
results.
<SPAN
class=268390717-12052003>
<SPAN
class=268390717-12052003>Tom: Agreed. That is how I found these
problems. By the way, it should be noted that the signals are generated
properly in the system tester. The problem comes in with the
Broker module which places the trades. You may have a valid signal
generated but the Broker won't place the trade. You can see this in the
ORDERS report. You will see Considered and Placed if there is a signal
generated. What you may then see is Cancelled. This is because the
Broker calculated the number of shares it could buy the day of the signal,
then the price changed, and the so the Broker could not buy that number of
shares. Then you see Cancelled. Its the Broker module that
screws up the equity and return results. But its all part of the
System
tester.
Yahoo! Groups Sponsor
To unsubscribe from this group, send an email to:
equismetastock-unsubscribe@xxxxxxxxxxxxxxx
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
|