Things you might have missed in 2013: The Gates Foundation's Hypocritical Investments http://www.motherjones.com/environment/2013/12/gates-foundat...
[There is the small factor that the company usually owns some of the stock and demand for the stock usually pushes the price up slightly, the company's stock assets do benefit slightly in a case like this, but this doesn't matter unless they sell, which is a rare activity compared to general volume of investment.]
Since the article does not differentiate between stocks, bonds, and loans, it is essentially useless. I guess they didn't care enough to differentiate, and just wanted to say bad stuff about the foundation; or, maybe they just don't understand finance much at all, and didn't think about it.