Why not ask Yahoo Finance for permission and see what happens?

Best, David Booth

You have to take permission from them.

if data is publicly available, you can use it. however, you MUST mentioned the source

Its publicly available data, so should be totally fine as long as you acknowledge them.

if data is publicly available and you have mentioned the source then ok

I am not sure whether you need a permission or not but to be on the safe side it is better to contact and to ask yahoo if you can use yahoo finance free data in publications? If it is against the copy rights it means that you will need permission from Yahoo to use it in research article.

Best Regards

Desalegn Abraha

Any data that is publicly available, can be used in research without asking for permission. however, one needs to mention the source of the data in the research work. Moreover, in research we seldom use the data in the raw form, we process it before using it in the research.

to me, its a public date, and I don't think er need either yahoo or google finance permission to republic them, and it depends on the publisher they know more about law view of there practice

You can use them