significant Price Discrepancies in Price Data


Junior member
12 0
I'm seeing significant price discrepancies in price data from Yahoo and Google.

Example is RR.L on 16th October and also 10th January when price drops from north of £11.00 to a low of sub £5.00.

This obviously plays havoc with back testing.

Is anyone seeing poor quality of data from Yahoo and Google. seems to have the same problem.


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