"Im sorry if I got too far from the initial point and took your time"
Not at all you actually have some points there even though i´d argue some of them quite exstensively ordinarily, AMZN i´m not familiar with but if it´s like you say its bit disturbing indeed.
And of course you are right that both jpy and US/europe QEs are significant factors overall, both being economy factors inflicting serious impact on world stock markets...
As do all economy, my point are that you dont get to choose what factors to consider, count them all in :-)
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