Free Data Source. Watch Out!

I am looking a correct data set. Believe or not, it is hard to find 100% accuracy for public-traded stocks on major popular websites. Why? They are all free!!!! Even for the simple calculated data, such as 52-week Low/High, you should be very careful to choose your web-based finance partner.

Let's take an example:
Aegon NL0000303709, listed on EuroNext Amsterdam Exchange

You can view and download the historical prices through the link below. We should treat EuroNext data as official values.
http://www.euronext.com/trader/summarizedmarket/stocks-2593-EN-NL0000303709.html?selectedMep=2

The 52-week Low/High is 3.64 - 6.263

Now let's go to Google Finace:

The 52-week Low/High is 4.41 - 4.61




How about Morningstar.nl:

The 52-week Low/High is 3.01 - 335.00
Finanly, someone got correct data! It's Yahoo! Finance!

The 52-week Low/High is 3.64 - 6.26
I wanted to have a check on Bloomberg, but could not find the stock information.

Usually for those paid service, such as the software provided by your borker, should be trustworthy. However for those free service, watch out!



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