# Data point discrepancy between Google Finance and Yahoo Finance

I have been comparing the historical stock data I am getting from Google Finance and Yahoo Finance. I am only getting six datapoints per day (date, open, high, low, close, volume). I have downloaded data from the Swedish stock exchange (Large Cap stocks).

Somehow I always end up with a little bit fewer set of datapoints (i.e. less dates) from Google. Do you know what the reason for this is?

There is a similar question (not fully duplicate), but still -- the answer may provide a sufficient information.

In short, the reasons for discrepancies is usually:

• initial data sources (historical parts)
• the way data are collected (pure end-of-day or tick data)
• the way adjustments and corporate actions are handled
• the way post-trade corrections are handled

Since the data sources for both sites are mix of different feeds, all kind of errors may occur.

• Yahoo and google finance data are free. Just like any product "you get what you pay for" applies to financial data too. If you want a more curated data source you would need to pay \$ for a more established data vendor. – Swagato Acharjee Mar 9 '17 at 19:26