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FinancialData errors

  • To: mathgroup at
  • Subject: [mg120564] FinancialData errors
  • From: DrMajorBob <btreat1 at>
  • Date: Fri, 29 Jul 2011 04:42:50 -0400 (EDT)
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  • References: <> <j0fos4$8p6$>
  • Reply-to: drmajorbob at

I've found a new (to me) species of error in FinancialData.

One example is the price of the following stock on Feb 10, 2011:

s = "JANFX";
FinancialData["JANFX", "Name"]
FinancialData["JANFX", {{2011, 2, 9}, {2011, 2, 11}}]

"Janus Flexible Bond Fund D Shar"

{{{2011, 2, 9}, 10.25}, {{2011, 2, 10}, 10.23}, {{2011, 2, 11},

As you see, FinancialData says the price was 10.23.

But I BOUGHT the stock through Janus Funds on that day, and the price was  

Moreover, if I go to Yahoo's interactive price chart for the stock at the  
following page, 10.36 is the price I find:;range=ytd;indicator=volume;charttype=line;crosshair=on;ohlcvalues=0;logscale=on;source=undefined

So... where are the errors really coming from?

This is not an astronomically large price or a Missing["Not Available"]  
price; it's within 2% of the correct price. But it's wrong.

These errors make it very difficult to trust FinancialData for any useful  


DrMajorBob at

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