I'm not sure how much a billionaire would care about a significant loss on a $56mm investment either, but it's worth pointing out that pretty close to 2% of his

I'm not sure how much a billionaire would care about a significant loss on a $56mm investment either, but it's worth pointing out that pretty close to 2% of his net worth would be in Facebook even if all he did with his money was park it in s&p 500 index funds. it's hard to have a diversified portfolio without owning at least some of one of the most valuable companies in the world. all things being equal, I'm sure he would care at least a little about a seven or eight figure loss, but I'm not sure it would be worth the opportunity cost of neglecting his other investments.