In this domain it is quite a bit of headroom. Normal companies just avoid the problem by splitting before they get even within two orders of magnitude. So if t

In this domain it is quite a bit of headroom. Normal companies just avoid the problem by splitting before they get even within two orders of magnitude. So if this next-closest share price got closer to the limit, it would almost certainly split long before it became within one order of magnitude of the limit. BH is just a different duck that way.