It has been a running joke in Forbes -- since the 80's -- that he thinks they've underestimated his net worth. I think the issue is not that he doesn't own equi

It has been a running joke in Forbes -- since the 80's -- that he thinks they've underestimated his net worth. I think the issue is not that he doesn't own equities -- they estimate the fortunes of Bloomberg, the Koches, the [Fidelity] Johnsons, etc. just fine. The problem is that he's so leveraged: being off by 10% on his assets might mean being off by 50% on his equity.