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[amibroker] Re: Where are you from, Part Deux



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Herman,
 
If you really have to have both in one database you can simply 
do the following: import EOD data using ASCII importer
(using for example tickers with _EOD extension) and refer 
to them using Foreign function. 
(This of course has to be done only ONCE per day - after close 
when most recent EOD data are available).
 
This is very simple and working approach.
Best 
regards,Tomasz Janeczkoamibroker.com
<BLOCKQUOTE dir=ltr 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  Herman van den 
  Bergen 
  To: <A title=amibroker@xxxxxxxxxxxxxxx 
  href="">amibroker@xxxxxxxxxxxxxxx 
  Sent: Monday, April 12, 2004 3:56 
PM
  Subject: RE: [amibroker] Re: Real-Time 
  Trading System Examples
  
  <FONT face=Arial 
  color=#000000 size=2>Hello Fred, thanks for your comments. Obviously 
  y<FONT face=Arial 
  size=2>ou have done your home work and you have identified what data aspects 
  are important for you, that is exactly what I suggested people 
  do.  W<SPAN 
  class=625550013-12042004><FONT face=Arial 
  color=#000000 size=2>e all trade different systems and for anybody to 
  imply/assume that their personal criteria have common value and apply to 
  others, without knowing what type of systems the others are using makes no 
  sense. I may be in the market a few hours after my signal while others 
  may stay in for a couple of weeks. The rules and criteria are not the 
  same.
  <FONT face=Arial 
  size=2> 
  EOD prices give me 
  more accurate results in my application, RT differences of up to several 
  percent can and have put me in the opposite position (TWS data). This 
  hasn't happened to me since I reverted to using EOD prices to generate my 
  major timing signals. Just play with the Stochastic and see how one such 
  deviation can have a forward effect on your chart and change your signal a few 
  bars after it happened. 
  <FONT face=Arial 
  size=2> 
  I don't know how 
  the EOD values are calculated, i posted at various places on the Internet but 
  got no authoritive replies, just personal and subjective opinions. EOD 
  Open prices appear to have a built-in lagless smoothing quality that 
  I cannot duplicate in backtesting or trading using RT data. 
  Awhile 
  back I posted a challenged for a RT formula that would generate a 
  Match for EOD prices... no replies, just defensive comments from those who 
  prefer to ignore the problem. I suspect EOD prices are defined/released by the 
  markets and make use of information that we do not have access to in real 
  time. Sometimes it is pretty hard to get to the bottom of 
  things.
  <FONT face=Arial 
  size=2><FONT 
  size=+0><FONT face=Arial color=#000000 
  size=2> 
  Best 
  regards,
  <FONT face=Arial 
  size=2>herman.
  <FONT 
  face=Arial> 
  <FONT 
  face=Arial> 
  
  
    <FONT face=Tahoma 
    size=2>-----Original Message-----From: Fred 
    [mailto:ftonetti@xxxxxxxxxxxxx]Sent: Monday, April 12, 2004 8:49 
    AMTo: amibroker@xxxxxxxxxxxxxxxSubject: [amibroker] 
    Re: Real-Time Trading System ExamplesAs I stated a 
    year or so ago, not only do EOD prices differ from intraday prices with 
    regards to the open, they differ regarding the close as well and in some 
    cases with high and low.  I'm not sure why you think the EOD prices 
    are more accurate, especially when it comes to what is reported for 
    closing prices as these are typically settling prices that occur AFTER 
    the close and are therefore NOT tradable, but if that's what you want to 
    use, so be it.  They are however at best only meaningful when 
    trading on delay i.e. buy/sell at tomorrows open NOT todays prices 
    whether they are based on close or intraday as they aren't in print 
    yet.  From my perspective the only meaningful numbers are those 
    related to intraday not EOD.--- In amibroker@xxxxxxxxxxxxxxx, 
    "Herman van den Bergen" <psytek@xxxx> wrote:> There is NO 
    problem with how AmiBroker processes data and there is NO> 
    problem with Data Vendors, the price differences cannot be blamed on> 
    anybody, they are simply a fact of market data.> > The 
    differences become more important as your trades becomes shorter, 
    which> is the case when you migrate from EOD to RT (my situation). 
    Another factor> is whether you work with Indices, ETFs or 
    Composites. The only way for you> to know if/how you are effected 
    is to do your own testing. Market data is> the foundation of all 
    your trading systems and you should know what you are> working 
    with.> > IMHO, Using EOD prices in your formulas is similar to 
    using "smoothed" RT> prices however the advantage of using EOD 
    Prices is that it gives you more> accuracy in backtesting and has 
    no lag. My limited experience is that EOD> Open prices are 
    released within the first second after the Open (no lag),> 
    tracking this price from the eSignal EOD server starts at 09:18:00 and 
    it> often zeroes in on the real Open price well before 9:30:00 
    a.m.> > Below are some examples, comparing QP2 with eSignal 
    RT.> take care,> herman> 
    >       Ticker Date/Time EOD-Open 
    RT-Open %Difference>       AAPL 
    03/08/04 26.79 26.62 0.63%>       AAPL 
    12/16/03 20.19 20.08 0.54%>       AAPL 
    03/30/04 27.86 27.72 0.50%>       AAPL 
    12/15/03 21.49 21.39 0.47%>       AAPL 
    02/18/04 23.18 23.08 0.43%>       AAPL 
    03/19/04 25.7 25.59 0.43%>       AAPL 
    12/12/03 21.32 21.23 0.42%>       AAPL 
    12/17/03 20.08 20 0.40%>       AAPL 
    01/30/04 22.74 22.65 0.40%>       AAPL 
    03/18/04 25.94 25.85 0.35%> 
    >       Ticker Date/Time EOD-Open 
    RT-Open %Difference>       YHOO 
    03/19/04 46.54 44.93 3.46%>       YHOO 
    11/14/03 42.88 42.66 0.51%>       YHOO 
    01/13/04 49.95 49.73 0.44%>       YHOO 
    03/04/04 43.46 43.34 0.28%>       YHOO 
    01/02/04 45.5 45.38 0.26%>       YHOO 
    03/01/04 44.52 44.41 0.25%>       YHOO 
    02/25/04 44.39 44.31 0.18%>       YHOO 
    01/29/04 46.57 46.49 0.17%>       YHOO 
    02/11/04 47.03 46.95 0.17%>       YHOO 
    02/13/04 47.61 47.54 0.15%> 
    >       Ticker Date/Time EOD-Open 
    RT-Open %Difference>       QCOM 
    03/16/04 64 63.16 1.31%>       QCOM 
    02/05/04 56.52 55.95 1.01%>       QCOM 
    10/21/03 45.39 44.95 0.97%>       QCOM 
    12/19/03 51.72 51.56 0.31%>       QCOM 
    03/17/04 64.74 64.54 0.31%>       QCOM 
    11/04/03 47.74 47.6 0.29%>       QCOM 
    12/12/03 50.18 50.05 0.26%>       QCOM 
    03/01/04 63.39 63.25 0.22%>       QCOM 
    11/20/03 45.56 45.48 0.18%>       QCOM 
    02/17/04 58.09 58 0.15%> > > >   
    -----Original Message----->   From: Tomasz Janeczko 
    [mailto:amibroker@xxxx]>   Sent: Monday, April 12, 2004 
    5:26 AM>   To: 
    amibroker@xxxxxxxxxxxxxxx>   Subject: Re: [amibroker] Re: 
    Real-Time Trading System Examples>   Importance: 
    High> > >   Hello,> 
    >   I have already wrote that accessing DAILY data in 
    intraday database is OF> COURSE POSSIBLE.>   Use 
    TimeFrame functions or just switch periodicity in AA Settings 
    window> to DAILY.> >   The fact that data 
    on EOD eSignal server are different than time> compressed data on 
    intraday eSignal server>   is NOT the problem of AmiBroker. 
    This is because how exchanges report EOD> data and 
    actually>   time-compressed intraday data provide ACCURATE 
    picture - because they> represent REAL trades that 
    occured>   during REAL trading session.>   
    And represent prices that your orders could actually be filled 
    at.>   =======================================> 
    >   Mixing data from eSignal daily and intraday servers 
    would result in> infinite confusion becuase>   
    close at 16:00 would could be DIFFERENT depending what viewing 
    interval> you choose.> >   Also problems 
    appear with OPEN price as it is NOT possible to trade> exactly on 
    open on certain exchanges.>   For example on Nasdaq you can 
    not place real "market on open" order>   see for 
    example:> > <A 
    href="">http://www.interactivebrokers.com/html/tradingInfo/orders/MarketOpenCloseOrd> 
    ersSimulated.html> >   so you can not get filled at 
    open (Market On Open orders are "simulated"> on Nasdaq by placing 
    market order within first 30 seconds of trading> 
    session)>   Considering this what's the purpose of using 
    EOD open when you can not get> filled at this 
    price.>   Using real intraday data gives you much better 
    robustness of your backtest> (you can calculate for example the 
    average>   price of first 1 minute of trading and enter on 
    that price)> >   And of course your system seems to 
    be way to sensitive to be successful in> real life if it yields 
    so much different>   results when daily prices differ by 
    such small amounts. You should really> add at least 0.2% for 
    slippage to treat>   the backtest with minimum amount of 
    credibility.> >   Best regards,>   
    Tomasz Janeczko>   
    amibroker.com>     ----- Original Message 
    ----->     From: Herman van den 
    Bergen>     To: 
    amibroker@xxxxxxxxxxxxxxx>     Sent: Monday, 
    April 12, 2004 4:06 AM>     Subject: RE: 
    [amibroker] Re: Real-Time Trading System Examples> > 
    >     In simple situations you only have to run 
    the EOD version once a day to> generate the table. But during 
    development i work with different systems and> watchlists, so I 
    may want to generate many different tradelists during the> day 
    and i shuffle back and forth between EOD and RT.> 
    >     If we could access both the RT and EOD 
    database at the same time from> the RT version (Not possible 
    right now) many problems would be solved.> However there are 
    other reasons why creating a file with AA statistics and> having 
    a means to read the Stats back would be handy....for example you> 
    could use two-pass Backtests and use stats from the first pass in the 
    second> in Scoring and PositionSize formulas, or plot the statistics 
    from> indicators, show complex trade stats on the screen or in 
    Interpretation> windows from the chart, analyze portfolio trades, 
    etc. Remember that such a> table offers a form of Persistent 
    memory that can be acessed by successive> AA operations.> 
    >     I have not had an occassion where i needed 
    the EOD version to access the> RT version.> 
    >     
    h>       -----Original 
    Message----->       From: 
    danielwardadams 
    [mailto:danielwardadams@xxxx]>       
    Sent: Sunday, April 11, 2004 9:40 
    PM>       To: 
    amibroker@xxxxxxxxxxxxxxx>       
    Subject: [amibroker] Re: Real-Time Trading System Examples> > 
    >       I've applied to the other list 
    but can't access it yet.> 
    >       Maybe it's apparent from what 
    you say there but would there be a 
    need>       for simultaneous instances 
    if you could access the EOD 
    database>       directly from an RT 
    instance? If not, you could just run the 
    EOD>       version once a day to 
    update the data. Does the EOD version ever 
    need>       to access the RT version 
    for anything?> >       
    Dan> >       --- In 
    amibroker@xxxxxxxxxxxxxxx, "Herman van den 
    Bergen">       <psytek@xxxx> 
    wrote:>       > You may want to read 
    my post on the DLL list>       > <A 
    href="">http://finance.groups.yahoo.com/group/amibroker-dll/message/1320>       
    >>       > From my post you will 
    see that I prefer two independent 
    but>       
    simultaeous,>       > AmiBroker 
    instances (one RT and one EOD) so that they 
    can>       communicate 
    with>       > each other. I would be 
    quite happy to run the EOD on one screen 
    and>       run 
    the>       > RT on another - as long 
    as my RT could access the EOD Signals 
    and>       > 
    Statistics.>       
    >>       > I currently have a 
    prototype running in this fashion, it 
    requires>       
    Exporting>       > the EOD tradelist 
    to allow my RT code to read it. I use 
    String>       
    Manipulation>       > to parse the 
    code, match dates, and fill in my RT data with 
    EOD>       > signals/prices. 
    While running RT i use the selected (or loop) 
    date>       
    to>       > retrieve the relevant 
    Row from the TradeReport file. It works 
    but>       is 
    slow>       > and still buggie, I 
    would prefer a simple and fast DLL as 
    outlined>       in my 
    DLL>       > post. As you can read 
    there it would offer a variety of 
    other>       
    attractive>       > applications. 
    With a little luck somebody with C-expertise 
    will>       like 
    the>       > idea and write a DLL. 
    Most of the work has already been done and 
    is>       > available from the 
    public domain OSAKA C-Sourcecode in DLL 
    files.>       
    >>       > wrt the -at list, I 
    gave up on Ninja because i found it too 
    highly>       > integrated with 
    it's proprietary Entry/Exit strategies. I prefer 
    to>       do 
    my>       > "own thing" using the 
    simplest possible API interface. 
    There>       haven't 
    been>       > many posts because 
    Tomasz may be offering Automated trading at 
    some>       
    point,>       > it would be unlikely 
    for any parallel efforts to be competative 
    in>       terms 
    of>       > features, reliability 
    and delivery date.>       
    >>       > best 
    regards,>       > 
    herman>       >   
    -----Original Message----->       
    >   From: mrdavis9 
    [mailto:mrdavis9@xxxx]>       
    >   Sent: Sunday, April 11, 2004 5:23 
    PM>       >   To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >   Subject: Re: [amibroker] Re: Real-Time Trading System 
    Examples>       >   
    Importance: High>       
    >>       
    >>       >   My post 
    below was intended to encourage you to keep 
    this>       
    discussion>       > PUBLIC, and only 
    use private emails where necessary.   I won't 
    have>       time 
    to>       > study it in depth till 
    later.  However, I am saving all 
    automated>       
    trading>       > discussions that I 
    see in an Outlook Express folder 
    entitled>       
    AUTOMATED>       > 
    TRADING.   I don't have a lot of saved messages yet, but I 
    have>       copied 
    one>       > here as an example of 
    what I am saving, I saw this on the 
    Ninja>       Trader 
    yahoo>       > group.  I 
    stopped watching their discussions awhile back.  Ron 
    D>       >   
    ==================================================================>       
    >>       >   I've taken 
    5 systems which I was using to trade manually, 
    changed>       >   
    them so they can run without me, backtested them on IRT until 
    I'm>       >   happy with 
    them and set them off live.>       
    >>       >   Expectancy 
    (based on (Pw * Aw)- (Pl * Al) where P = 
    probability,>       A 
    =>       >   Average, w = 
    win and l = loss) ranges from 1.8 to 2.7 and R/R 
    from>       >   2.4 to 
    6.1. Percent wins range from 38% to 52% in the 
    backtest>       >   
    period. All systems use a variety of indicators (CCI, FASTD 
    and>       >   custom 
    indicators mostly) and multiple time 
    frames.>       
    >>       >   The single 
    most important factor in improving 
    backtested>       
    performance>       >   
    turned out to be identifying conditions in longer timeframes 
    which>       >   lead to 
    poor results and modifying the scans to prevent 
    trading>       
    when>       >   those 
    conditions apply. With some scans this results in very 
    few>       >   trades (15 
    or 20 per quarter) so backtest results 
    are>       
    statistically>       >   
    dubious and, as backtesting itself is not a 100% representation 
    of>       >   what will 
    happen in real life, I will hold off buying the 
    yacht>       
    for>       >   the 
    timebeing.>       
    >>       >   
    ========================================================>       
    >     ----- Original Message 
    ----->       
    >     From: 
    dingo>       
    >     To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >     Sent: Sunday, April 11, 2004 1:49 
    PM>       >     
    Subject: RE: [amibroker] Re: Real-Time Trading System 
    Examples>       
    >>       
    >>       
    >     I posted some code (vbScript) to export the 
    trade list under>       
    some>       > circumstances - look 
    back using this thread subject.>       
    >>       
    >     d>       
    >>       
    >>       
    >>       > 
    -------------------------------------------------------------------->       
    ------>       
    >       From: mrdavis9 
    [mailto:mrdavis9@xxxx]>       
    >       Sent: Sunday, April 11, 2004 2:38 
    PM>       
    >       To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >       Subject: Re: [amibroker] Re: 
    Real-Time Trading System 
    Examples>       
    >>       
    >>       
    >       I am also interested in the subject 
    of this thread.  Ron D>       
    >         ----- Original Message 
    ----->       
    >         From: 
    danielwardadams>       
    >         To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >         Sent: Sunday, April 11, 
    2004 1:30 PM>       
    >         Subject: [amibroker] 
    Re: Real-Time Trading System 
    Examples>       
    >>       
    >>       
    >         Herman & 
    dingo,>       
    >         I'd also be interested 
    in anything you come up with. I 
    want>       to 
    solve>       
    >         the same problem as you 
    Herman. Hope you're making 
    better>       
    progress>       
    >         than me though 
    ...>       
    >>       
    >         
    Dan>       
    >>       
    >>       
    >         --- In 
    amibroker@xxxxxxxxxxxxxxx, "dingo" 
    <dingo@xxxx>>       
    wrote:>       
    >         > sounds neat.  
    I'll contact you off-line to work up 
    some>       
    specs.>       
    >         
    >>       
    >         > 
    d>       
    >         
    >>       
    >         
    >>       
    >         >   
    _____>       
    >         
    >>       
    >         > From: Herman van 
    den Bergen [mailto:psytek@xxxx]>       
    >         > Sent: Friday, 
    April 09, 2004 9:51 PM>       
    >         > To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >         > Subject: RE: 
    [amibroker] Real-Time Trading System 
    Examples>       
    >         
    >>       
    >         
    >>       
    >         > Anytime you are 
    ready, if you write the code for 
    the>       
    tradelist>       
    >         export 
    I'll>       
    >         > share whatever afl 
    I turn out to read the file from RT 
    :-)>       
    >         > I have the basics 
    working and hope to finish it over 
    the>       
    weekend.>       
    >         It is 
    kind>       
    >         > of neat you just 
    click anywhere on the RT chart and 
    see>       all 
    the>       > 
    EOD>       
    >         > particulars in the 
    RT Interpretation window :-) 
    still>       have to 
    do>       
    >         the 
    date>       
    >         > 
    matching...>       
    >         
    >>       
    >         > 
    h>       
    >         
    >>       
    >         
    >>       
    >         
    >>       
    >         > -----Original 
    Message----->       
    >         > From: dingo 
    [mailto:dingo@xxxx]>       
    >         > Sent: Friday, 
    April 09, 2004 9:37 PM>       
    >         > To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >         > Subject: RE: 
    [amibroker] Real-Time Trading System 
    Examples>       
    >         > Importance: 
    High>       
    >         
    >>       
    >         
    >>       
    >         > Your BTW  is 
    EXACTLY what I was going to 
    suggest.>       
    >         
    >>       
    >         > I'll work you up 
    something to do the exporting 
    (and>       little 
    bit>       
    >         more). 
    How>       
    >         > soon do you need 
    it?>       
    >         
    >>       
    >         > 
    d>       
    >         
    >>       
    >         
    >>       
    >         
    >>       
    >         >   
    _____>       
    >         
    >>       
    >         > From: Herman van 
    den Bergen [mailto:psytek@xxxx]>       
    >         > Sent: Friday, 
    April 09, 2004 9:13 PM>       
    >         > To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >         > Subject: RE: 
    [amibroker] Real-Time Trading System 
    Examples>       
    >         
    >>       
    >         
    >>       
    >         > 
    InLine...>       
    >         
    >>       
    >         > -----Original 
    Message----->       
    >         > From: dingo 
    [mailto:dingo@xxxx]>       
    >         > Sent: Friday, 
    April 09, 2004 7:49 PM>       
    >         > To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >         > Subject: RE: 
    [amibroker] Real-Time Trading System 
    Examples>       
    >         > Importance: 
    High>       
    >         
    >>       
    >         
    >>       
    >         > I'm still trying 
    to get my head around what 
    approach>       
    you're>       > 
    wanting>       
    >         to 
    take.>       
    >         
    >>       
    >         > Are you going to 
    use EOD data and formula to produce 
    your>       
    buy>       
    >         
    signals?>       
    >         > Yes, because they 
    are more accurate than RT signals - 
    for>       what 
    i>       > 
    am>       
    >         
    doing.>       
    >         
    >>       
    >         > Or are you going 
    to use Realtime data and another 
    formula>       to 
    do>       > 
    your>       
    >         > 
    entries?>       
    >         > 
    Yes.>       
    >         
    >>       
    >         > Are you going to 
    use Realtime data and formula to 
    manage>       
    >         stops/exits 
    for>       
    >         > open 
    positions?>       
    >         > 
    Yes.>       
    >         
    >>       
    >         > If that's the case 
    then you won't need to mix your>       
    databases and>       
    >         your 
    EOD>       
    >         > formula can be 
    separate from the realtime formula, 
    right?>       
    >         > Indeed, but only 
    in real trading, the problem is that 
    I>       need 
    to>       
    >         > 
    develop&optimize the RT components with backtesting. 
    How>       would 
    I>       
    >         optimize 
    my>       
    >         > RT stops over 
    historical data if I don't have access 
    to>       the 
    EOD>       
    >         
    signals,>       
    >         > stock picks, 
    scores, shares, and trade-prices in 
    my>       formula? 
    All>       
    >         these 
    are>       
    >         > based on EOD data 
    and can not be calculated accurately 
    in>       
    RT.>       
    >         
    >>       
    >         > I assume you have 
    the EOD formula that generates the 
    buys>       
    working>       
    >         > 
    satisfactorily?>       
    >         > Yes, but is is 
    price sensitive and gets all 
    confused>       dealing 
    with>       
    >>       
    >         
    things>       
    >         > like -17 to +30 
    cts RT volatility/noise of the 
    OHLC>       Prices 
    (AAPL).>       
    >         
    >>       
    >         > If you are going 
    to use a formula to manage your>       
    stops/exits have>       
    >         you 
    been>       
    >         > able to complete 
    this or is this the question that 
    you're>       
    asking?>       
    >         > There are many 
    formulas and i haven't decided which 
    to>       use, 
    My>       
    >         system 
    must>       
    >         > first work with 
    EOD performance in an RT 
    environment.>       
    >         
    >>       
    >         > Assuming you have 
    a formula to manage those stops/exits 
    ->       have 
    you>       
    >         
    worked>       
    >         > out a way to 
    trigger the trade?>       
    >         > 
    NO.>       
    >         
    >>       
    >         > I believe you 
    mentioned that Ninja Trader wasn't 
    the>       answer.  
    Is>       
    >         this 
    a>       
    >         > piece you're 
    asking about as well?>       
    >         > Not now, waiting 
    for TJ to introduce automation... 
    i>       still 
    have>       
    >         work to 
    do>       
    >         > and hope to be 
    ready when TJ is...>       
    >         
    >>       
    >         > Lots of questions, 
    eh?>       
    >         > Not really; I have 
    a lot more :-)>       
    >         
    >>       
    >         > I'm asking because 
    I'm headed in that direction as well 
    ->       just 
    not>       
    >         as 
    ready>       
    >         > as you are right 
    now.>       
    >         > Let me know how 
    things work out for you... and what 
    path>       
    you>       > 
    decide>       
    >         
    on.>       
    >         
    >>       
    >         > BTW, today I 
    thought of another approach, a brute 
    force>       
    method>       
    >         alright 
    but>       
    >         > it might work. I 
    simply export the entire EOD trade 
    list>       and 
    read>       
    >         it 
    from>       
    >         > the RT code. For 
    each RT date I look up the matching 
    EOD>       row 
    in>       > 
    the>       
    >         
    Trade>       
    >         > list, I then 
    extract whatever information i need. 
    Tried>       it, It 
    is>       
    >         
    actually>       
    >         > faster than i 
    expected. All i need now is an 
    automatic>       Export 
    at>       
    >         the end 
    of>       
    >         > my EOD backtest 
    ;-) any ideas?>       
    >         
    >>       
    >         > 
    h>       
    >         
    >>       
    >         > 
    TIA>       
    >         
    >>       
    >         > 
    d>       
    >         
    >>       
    >         
    >>       
    >         >   
    _____>       
    >         
    >>       
    >         > From: Herman van 
    den Bergen [mailto:psytek@xxxx]>       
    >         > Sent: Friday, 
    April 09, 2004 12:01 PM>       
    >         > To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >         > Subject: RE: 
    [amibroker] Real-Time Trading System 
    Examples>       
    >         
    >>       
    >         
    >>       
    >         > [d]Or are you 
    trying to take an EOD system and trying 
    to>       make 
    your>       
    >         
    system>       
    >         > "more granular" 
    and pick the same patterns in 
    intraday>       
    data?>       
    >         
    >>       
    >         > I am mainly trying 
    to improve Entries and Exits, i am 
    not>       
    looking>       
    >         
    for>       
    >         > patterns. The 
    systems work fine in EOD but I observed 
    on>       the 
    RT>       
    >         charts 
    that>       
    >         > i often miss 
    locking in some really nice profits 
    that>       fade 
    before>       > 
    I>       
    >         exit. 
    So>       
    >         > i want to code in 
    Trailing stops that activate at 
    a>       certain 
    profit>       
    >         and 
    than>       
    >         > exit when the 
    price drops back a bit. For example, if 
    my>       
    profits>       
    >         reaches 
    2%>       
    >         > during the first 
    two hours of the trade, then i want 
    to>       activate 
    a>       
    >         Stop 
    and>       
    >         > exit when my 
    profits drop back to 1.5%. ApplyStops 
    cannot>       be 
    used>       
    >         in 
    very>       
    >         > short-term (1-3 
    days) trading because on the day of 
    exit>       it 
    is>       
    >         unknown 
    which>       
    >         > came first, the 
    High or the Low, or with profit 
    stops,>       how 
    many>       
    >         dips 
    there>       
    >         > were during the 
    day that would have terminated the 
    trade.>       RT 
    data>       
    >         is 
    needed>       
    >         > to develop proper 
    stops. limits, etc. with the 
    short>       trades i 
    use.>       
    >         
    >>       
    >         > If i trade 1-3 
    times a week and i might be able to 
    reduce>       
    my>       
    >         exposure by 
    50%>       
    >         > if I managed to 
    get out based on profits instead 
    of>       timing. 
    I>       > 
    would>       
    >         
    prefer>       
    >         > overall less 
    profits if it came with less exposure. 
    Also,>       
    the>       
    >         strength 
    of>       
    >         > signals fades 
    pretty fast... have you ever tested your 
    n->       
    Bar>       
    >         profits? 
    i.e.>       
    >         > profits made on 
    the 1st, 2nd and 3rd day? You can 
    vary>       the 
    entry>       
    >         delay 
    and>       
    >         > use n-Bar stops to 
    limit the trade duration, that way 
    you>       
    >         can 
    "isolated">       
    >         > single days 
    (profits) of your trade. For me, 
    typical>       
    profit>       
    >         
    distributions>       
    >         > might be 65% 25% 
    10% for a system with an average of 
    3->       bar 
    trades.>       
    >         So 
    the>       
    >         > first day 
    obviously has the greatest profit potential 
    at>       the 
    least>       
    >         
    exposure.>       
    >         > IMHO, short term 
    signals have a limited life-time: 
    after>       a 
    certain>       
    >         number 
    of>       
    >         > days you are just 
    hoping to get lucky :-) knowing your 
    n->       
    Bar>       
    >         profits 
    may>       
    >         > help you decide 
    whether it is worth it (risk) to stay 
    in>       a 
    trade>       > 
    or>       
    >         
    not.>       
    >         
    >>       
    >         > [d] IMHO you are 
    in un-charted waters as far as AB 
    goes.>       
    >         
    >>       
    >         > We got some smart 
    cookies on this list, I just 
    can't>       believe 
    that>       
    >         nobody 
    is>       
    >         > working on this; 
    it appears the obvious way to keep 
    your>       
    EOD>       > 
    system>       
    >         
    working>       
    >         > now that RT 
    trading is catching on. So I hope you 
    are>       wrong 
    on>       > 
    this>       
    >         one 
    :-)>       
    >         
    >>       
    >         > 
    h>       
    >         
    >>       
    >         > -----Original 
    Message----->       
    >         > From: dingo 
    [mailto:dingo@xxxx]>       
    >         > Sent: Friday, 
    April 09, 2004 11:21 AM>       
    >         > To: 
    amibroker@xxxxxxxxxxxxxxx>       
    >         > Subject: RE: 
    [amibroker] Real-Time Trading System 
    Examples>       
    >         > Importance: 
    High>       
    >         
    >>       
    >         
    >>       
    >         > IMHO you are in 
    un-charted waters as far as AB 
    goes.>       
    >         
    >>       
    >         > Are you trying to 
    come up with a system to do 
    backtesting>       with 
    or>       
    >         one 
    to>       
    >         > monitor trades / 
    manage stops for real-time trading?  
    Or>       are 
    you>       
    >         trying 
    to>       
    >         > take an EOD system 
    and trying to make your system 
    "more>       
    granular">       
    >         and 
    pick>       
    >         > the same patterns 
    in intraday data?>       
    >         
    >>       
    >         > 
    d>       
    >         
    >>       
    >         
    >>       
    >         >   
    _____>       
    >         
    >>       
    >         > From: Herman van 
    den Bergen [mailto:psytek@xxxx]>       
    >         > Sent: Friday, 
    April 09, 2004 11:14 AM>       
    >         > To: AmiBroker 
    YahooGroups>       
    >         > Subject: 
    [amibroker] Real-Time Trading System 
    Examples>       
    >         
    >>       
    >         
    >>       
    >         > Would anybody have 
    some example code for Real Time 
    trading>       > 
    systems?>       
    >         I 
    have>       
    >         > considerable 
    trouble converting EOD systems to RT data 
    ->       tried 
    too>       
    >         many 
    ways>       
    >         > to mention but 
    always hit a snag at some advanced 
    point.>       
    My>       > 
    problem>       
    >         
    areas>       
    >         > 
    are:>       
    >         
    >>       
    >         > 1) Converting or 
    duplicating EOD signals to RT, I 
    need>       
    this>       > 
    because>       
    >         EOD 
    data>       
    >         > prices are more 
    accurate than those I get from RT 
    sources.>       
    >         > 2) Running the 
    basic EOD system in RT, i.e. reproduce 
    EOD>       
    signals>       
    >         in RT. 
    I>       
    >         > want this as a 
    verification stage before trying 
    to>       enhance 
    the>       
    >         system 
    with>       
    >         > RT 
    data>       
    >         > 3) Custom coding 
    Profit targets, Limit Prices and 
    Stops.>       
    >         > 4) Optimizing 
    entry points by using Pre/after 
    hours>       trading 
    and/or>       
    >         
    using>       
    >         > delayed/early 
    entries and exits.>       
    >         > 5) Showing EOD 
    Arrows (derived from EOD data, not from 
    RT>       data) 
    on>       
    >         my 
    minute>       
    >         > 
    charts.>       
    >         
    >>       
    >         > If anybody has 
    example code or reference URLs to 
    share>       that 
    would>       
    >         be 
    much>       
    >         > 
    appreciated.>       
    >         
    >>       
    >         > Also, i am 
    beginning to wonder how many subscribers, 
    if>       any, 
    have>       
    >         
    actually>       
    >         > solved the above 
    problems. If you have done so 
    perhaps>       you 
    can>       
    >         share 
    this>       
    >         > simple fact (no 
    code needed), knowing that it has 
    been>       
    done>       
    >         successfully 
    is>       
    >         > a great motivator 
    :-)>       
    >         
    >>       
    >         > TIA and best 
    regards,>       
    >         > 
    herman.>       
    >         
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    >         
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