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Re:Twitter Reports Weak Earnings and the Stock Is Crashing by needhelpplz on Tuesday April 28, 2015 @08:56PM (#9455980)
who sets these expectation numbers, how do they get it and why can't normal investors arrive at the same numbers?

isn't it possible that some number can be purposefully influenced so that the stock will go up upon announcement?

Re:Twitter Reports Weak Earnings and the Stock Is Crashing by wutbrodo on Wednesday April 29, 2015 @07:20PM (#9462473)
> who sets these expectation numbers, how do they get it and why can't normal investors arrive at the same numbers?

I'm not quite sure what you're asking here: "Normal" investors can and do set these numbers. Every time you buy or sell a share of stock at a given price, you're adding your (tiny) signal of what you think the price should be (and nudging it a little in that direction as well). The price of the stock reflects the aggregate of the millions of these little guesses.