3 possible problematic trades from maybe the most famous investor alive? At least one of which hurt him rather than help him?
This is snooze-worthy.
Edit: before you jump on me for defending a billionaire, I have no love for him and have serious doubts someone should be able to accumulate that much wealth. I'm just saying that as far as ProPublica exposes go, there's nothing here nearly as important or stunning as their usual reporting.