Satya Nadella Added $850B to Microsoft
First:  A stock can rise for reasons having zero to do with the reality of the business behind the stock, for example mispricing, availability or the lack thereof of alternative investments, inflation, currency devaluation etc.  Second: To me it always leaves a very foul aftertaste when the achievements of a team are ascribed to whoever the visible front-person is.  I find it hard to believe that among the other 149999 employees that Microsoft has, there aren't some that deserve to be mentioned in relation to this achievement as much or even more than Satya Nadella does.