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Re: [amibroker] StoRSI + 144MA + BB rank



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Greg, thanks for the code. I am embarrassed to even ask this question, but 
at the risk of being called a dummy, I'm going to ask it anyway (maybe TJ won't 
see it!). I still don't fully understand the PositionScore function despite 
reading and re-reading the help file. It ranks stocks on the basis of 
highest ABSOLUTE score. Yet, in your remarked statement after the Rank line 
in your code, you state "highpositivescore best long candidates, 
lownegativescore best short candidates." So, if it converts all Ranks into 
absolute scores, how does it distinguish long candidates from short 
candidates, since absolute scores are all positive? How do you get a printout of 
the PositionScore stock ticker rankings? TIA.
 
Al Venosa
<BLOCKQUOTE 
>
  ----- Original Message ----- 
  <DIV 
  >From: 
  Greg 
  
  To: <A title=amibroker@xxxxxxxxxxxxxxx 
  href="">AmiBroker@xxxxxxxxxxx 
  Sent: Thursday, December 18, 2003 8:13 
  AM
  Subject: [amibroker] StoRSI + 144MA + BB 
  rank
  
  
  Hi,
   
  I was trying to workout a system in Amibroker that would use StoRSI 
  and 144 Ma for trading rules.
   
   I wasn't having great results until I added a ranking method 
  presented by Gary Serkoshian in his slideshow presentation. It used 
  BollingerBands to score and rank the trades. 
   
   The following Amibroker Code is what I came up with. 
   
  Try it and tell me what you think about the system if you care to comment 
  and get the time. This is intended for trading a portfolio of two or 
  more stocks and won't improve the score of only one stock. 
  
   
  // Stochastic - RSI , recommended by Steve 
  Karnish //
  
  // With portfolio mode //
  /*****
  ** REGULAR PORTFOLIO mode 
  ** This sample optimization
  ** finds what is optimum number of positions open simultaneously
  ** 
  ****/
  SetOption(<FONT color=#ff00ff 
  size=1>"InitialEquity", <FONT color=#ff00ff 
  size=1>10000 );
  SetTradeDelays(<FONT color=#ff00ff 
  size=1>1,1<FONT 
  size=1>,1,<FONT 
  color=#ff00ff size=1>1);
  RoundLotSize = 1; 
  
  posqty = Optimize<FONT 
  size=1>("PosQty", 
  1, <FONT 
  color=#ff00ff size=1>1, <FONT color=#ff00ff 
  size=1>20, 1<FONT 
  size=1> );
  SetOption(<FONT color=#ff00ff 
  size=1>"MaxOpenPositions", posqty);<FONT 
  color=#008000 size=1>
  // desired position size is 100% portfolio equity
  // divided by PosQty positions
  PositionSize = -100<FONT 
  size=1>/posqty; 
  // The StoRSI system ......
  //
  StoRSI = EMA<FONT 
  size=1>((scRSI<FONT 
  size=1>(C,8) - 
  LLV<FONT 
  size=1>(scRSI<FONT 
  size=1>(C,8<FONT 
  size=1>),8))/
  (HHV<FONT 
  size=1>(scRSI<FONT 
  size=1>(C,8<FONT 
  size=1>),8) - 
  LLV<FONT 
  size=1>(scRSI<FONT 
  size=1>(C,8<FONT 
  size=1>),8<FONT 
  size=1>)),3<FONT 
  size=1>)*100;
  BL=11;
  SL=89<FONT 
  size=1>;
  //Trend qualifier .....
  x=MA<FONT 
  size=1>(C,144<FONT 
  size=1>);
  MAlong=x>Ref<FONT 
  size=1>(x,-1);
  MAshort=x<Ref<FONT 
  size=1>(x,-1<FONT 
  size=1>);
  //
  Buy = Cross<FONT 
  size=1>(11,StoRSI) 
  AND MAlong;
  Sell= Cross<FONT 
  size=1>(StoRSI,89<FONT 
  size=1>);
  Short = Cross<FONT 
  size=1>(89,StoRSI) 
  AND MAshort;// AND 
  MAshort=True;
  Cover = Cross<FONT 
  size=1>(11<FONT 
  size=1>,StoRSI);
  //Plot(Equity(),"Equity",1,1);<FONT 
  color=#008000 size=1>
  // now additional score 
  // that is used to rank equities 
  // when there are more ENTRY signals than available
  // positions/cash
  //<FONT 
  face="Times New Roman">PositionScore = 100-RSI(); // prefer stocks that have 
  low RSI;
  //
  SetOption(<FONT color=#ff00ff 
  size=1>"WorstRankHeld",<FONT color=#ff00ff 
  size=1>10);
  numerator=(C-<FONT color=#0000ff 
  size=1>BBandBot(C,<FONT color=#ff00ff 
  size=1>21,2<FONT 
  size=1>)) ;
  denominator= BBandTop<FONT 
  size=1>(C,21<FONT 
  size=1>,2<FONT 
  size=1>)-BBandBot<FONT 
  size=1>(C,21<FONT 
  size=1>,2) ;
  Rank= 100<FONT 
  size=1>-(100*((numerator 
  / denominator))) ;//HighpositiveScore best 
  Long Candidates,<FONT face="Courier New" color=#008000 
  size=1>//Lownegativescore , best Shorts
  //
  PositionScore=rank;
   <FONT 
  color=#000000>*****
   I'd be interested to know how this ranking method 
  compares with the Relative Strength ones we talked about 
recently.
   
  SetOption(<FONT color=#ff00ff 
  size=1>"WorstRankHeld",<FONT color=#ff00ff 
  size=1>10);
  numerator=(C-<FONT color=#0000ff 
  size=1>BBandBot(C,<FONT color=#ff00ff 
  size=1>21,2<FONT 
  size=1>)) ;
  denominator= BBandTop<FONT 
  size=1>(C,21<FONT 
  size=1>,2<FONT 
  size=1>)-BBandBot<FONT 
  size=1>(C,21<FONT 
  size=1>,2) ;
  Rank= 100<FONT 
  size=1>-(100*((numerator 
  / denominator))) ;//HighpositiveScore best 
  Long Candidates,<FONT face="Courier New" color=#008000 
  size=1>//Lownegativescore , best Shorts
  //
  PositionScore=rank ;
  <FONT 
  color=#0000ff> <FONT 
  color=#000000>*****
   
  Bye for now,
  GregSend BUG REPORTS 
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