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Re: Re: RE: [amibroker] Yahoo ASX historical data



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Anything before 1992 is almost a waste of time as 
the characteristics of the ASX changed quite significantly due to compulsory 
employer superannuation introduced in July 1992.
 
If you're into backesting, <FONT face=Arial 
size=2>ensure that the history includes delisted stocks (very few histories out 
there provide this).  Doing backtesting against only the currently-listed 
stocks introduces something called "population bias" which can change the 
results of a given trading system quite significantly.
 
The Yahoo data has many many holes in it - if 
you're developing trading systems that need accurate data please don't 
think Yahoo is a good source for such data because it's severely lacking.  
But you can't beat the price though but carefully assess whether your style of 
trading needs to have accurate data.
 
Cheers,Richard.Norgate Investor ServicesPremium Quality Stock 
and Futures Data for Australian, Asian & US Markets<A 
href="">www.premiumdata.net
 
<BLOCKQUOTE 
>
  ---- Original Message ----- 
  <DIV 
  >From: 
  Michael.S.G. 
  
  To: <A title=amibroker@xxxxxxxxxxxxxxx 
  href="">amibroker@xxxxxxxxxxxxxxx 
  Sent: Sunday, July 27, 2003 7:18 PM
  Subject: RE: Re: RE: [amibroker] Yahoo 
  ASX historical data
  Do you mean to say there are 
  no data suppliers with 15+ years historical data at all (For 
  ASX)?






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