[Slartie]

It's still not random. Usually those headlines are followed by articles in which a negative aspect that was found in the released numbers is detailed.

Like Netflix beating revenue and earnings expectations, and even beating new subscriber number expectations, but subscriber growth in a key market slowing much more than anticipated.

If you know all these numbers, you can screen them for potential negative catalysts that might counteract the positive effects of expectation beats. If you find none, you can relatively safely assume that the stock price will probably pop after release.