Stock returns are in general already not normally distributed, especially stocks such as (our) GNH.
This equally indicates that 'black-swan' events are indeed more likely than 'non-black-swan (=white swan?)' events.
The negative news of a black swan is that the SP could drop dramatically, however there is also a positive side of a black swan which is the other side of the distribution. And we have experienced that event already since the last few weeks.
Hopefully more black swan events to come, but only green on the boards plz!