Not to say this necessarily isn't the reason, but I always get the feeling with "stock up/down amid investor optimism/fears of XYZ" headlines like this that you could secretly replace the financial reporter's data with Brownian motion and they'd equally find some justification for the rises/falls.
Not to say this necessarily isn't the reason, but I always get the feeling with "stock up/down amid investor optimism/fears of XYZ" headlines like this that you could secretly replace the financial reporter's data with Brownian motion and they'd equally find some justification for the rises/falls.
Some more discussion: https://news.ycombinator.com/item?id=48654795