Affichage des articles dont le libellé est Stock Market Watch etc.. Afficher tous les articles
Affichage des articles dont le libellé est Stock Market Watch etc.. Afficher tous les articles

samedi 11 février 2017

discrepancy in stock volume amounts at Yahoo, Google, Stock Market Watch etc.

I have a question regarding differing stock volume amounts for a specific stock reported on various financial websites. For example, let's take a look at Lockheed Martin's volume amount at 12-12-2016.

Yahoo Finance: 7 080 300
http://ift.tt/2kEcr6h

Google Finance: 7 080 271
http://ift.tt/2kE603a

Stock Market Watch: 7 079 560
http://ift.tt/2kDYfdw

and finally the Lockheed Martin's official website: 7 078 760
http://ift.tt/2kE2lSO

My guess is that it perhaps could be a result of some data providers including pre-market and after-hours trading into the calculation of the volume but still, 4 different numbers?

I hope someone can explain this. Thank you in advance.


discrepancy in stock volume amounts at Yahoo, Google, Stock Market Watch etc.