Microsoft ( MSFT ) has been in my portfolio for years. Microsoft has a strong competitive advantage with Windows. And while Microsoft sees the Apple ecosystem as a competitor, it remains an attractive operating system. At home, I have both a MacBook and I'm a passionate investor from the Netherlands with 12 years of stock market experience. My articles usually contain a good overview of important investment criteria. A stock for my portfolio is of interest to me if the company has the following characterist ...