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Re: [amibroker] More on data holes - for TJ



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I carried out a (rather trivial) data comparison of the 
suppliers accessible free via Amiquote. 
In each case I used the Nasdaq 100 stocks (Nov 03 chapter). 

My reference signal was ^SPX downloaded from Yahoo! (Using 
$SPX from eSignal resulted in lots of 'Extra Quotes' for other stocks - in other 
words $SPX is full of holes). 
I selected all the reports except 'Report 
missing quotes at beginning...' and 'Report extra quotes'.
 
Here are the results of this stunning piece of scientific 
investigation (anyone on the Nobel prize committee out there?):
 

<TABLE  cellSpacing=0 
cellPadding=0 width=454 border=0 x:str>
  
  <COL  
  width=198>
  
  
  
    <TD class=xl26 
     
    width=198 height=18> 
    <TD class=xl28 
     
    width=64>Yahoo!
    <TD class=xl28 
     
    width=64>eSignal
    <TD class=xl29 
     
    width=64>MSN
    <TD 
     
    width=64>
  
    <TD class=xl24 
     
    height=17>Missing quote
    <TD class=xl27 
     
    x:num>542
    <TD class=xl27 
     
    x:num>542
    <TD class=xl30 
     
    x:num>542
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD class=xl24 
     
    height=17>Possible unadjusted split
    <TD class=xl27 
     
    x:num>37
    <TD class=xl27 
     
    x:num>93
    <TD class=xl30 
     
    x:num>89
    <TD 
    ><FONT 
      face=Arial size=2>
  
    <TD class=xl25 
     
    height=18>Low is higher than Close
    <TD class=xl31 
     
    x:num>2
    <TD class=xl31 
     
    x:num>15
    <TD class=xl32 
     
    x:num>1
    <TD 
    >
  
    <TD 
     
    height=17>
    <TD 
    >
    <TD 
    >
    <TD 
    >
    <TD 
    >
 
 
Would anyone like to contribute results from QP and/or 
CSI?
 
Steve
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


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