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everyone.
Probably, someone else before me noticed that peculiar behaviour but I have not found any thread with a relevant title.

Anyway, here is the case. I have attached a screenshot which displays the number of shares that have been bought and sold for 07.02.2020 of Square Enix Holdings. Here is the link->>>interval 1d

As it can be observed volume value for the whole day is 1.53M.

However, if interval is changed to 1H instead of 1D the following volume values hours-wise are displayed:

2/7 9 AM: 515.8K
2/7 10 AM: 229.1K
2/7 11 AM: No volume at all
2/7 12 PM: 942.4K
2/7 1 PM: 236.6K
2/7 2 PM: 1.56M

If to sum it up, then the final value is 2.97 M.

It would be great if someone clarifies it to me.

Thanks in advance.

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Regular trading hours for this stock on its primary exchange (in Tokyo) are from 09:00 JST - 11:30 JST, then it closes for 1 hour, then it reopens and trades from 12:30 JST - 15:00 JST. On top of that, trading runs continuously from 08:00 JST - 16:00 JST on non-primary exchanges.

1.53M is the volume according to the primary exchange (link below). The hourly data being displayed by Yahoo is a combination of primary and non-primary exchanges. The 11 a.m. hour is blank because the stock closes temporarily from 11:30 to 12:30 -- this is obviously wrong yet this is how Yahoo reports it nevertheless.

It is probably a better idea for you to look for another data source. Looking through this post might be a good place to start: What data sources are available online?

You can find data from the primary exchange here: Japan Exchange Group

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  • $\begingroup$ Thank you very much for the reply! If it is not hard for you, could you please send to me a link where non-primary exchanges are explained as googling I have not succeed to find a decent explanation $\endgroup$ – user641597 Feb 13 '20 at 14:36
  • $\begingroup$ Or ”non-primary” means secondary? If yes, then no need to provide me with anything. $\endgroup$ – user641597 Feb 13 '20 at 14:49
  • $\begingroup$ @user641597 non-prinary would be exchanges other than the primary listing exchange. For example, an NYSE listed company can have volume on other exchanges like IEX or Nasdaq $\endgroup$ – amdopt Feb 13 '20 at 15:36
  • $\begingroup$ Hi, thanks again. $\endgroup$ – user641597 Feb 14 '20 at 11:18
  • $\begingroup$ However, how do these shares end up on none-primary exchanges? I know there are few dual-listed companies, such as Yandex, which stocks are traded in Moscow Stock Exchange and on Nasdaq. So is Moscow Exchange considered as none-primary? And how can I find volume data regarding these none-primary exchanges in Square Enix example? Anyway, thanks for your replies! $\endgroup$ – user641597 Feb 14 '20 at 11:33

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