As far as I know, two things have been announced on this matter.

Firstly, the BTC and BCH were sold gradually and not all at the same time causing a drop. This was confirmed by the trustee himself. Sorry can't find the source.

Secondly, the trustee is done selling. He was only supposed to liquidate I think $400m which would be given back to the victims of the hack. That means the rest of 120,000 BTC (more or less, idk) are...useless? It has yet to be decided what it will happen with them, but basically those 120,000 BTC don't have to get into anyone's pocket, they are free of any control.

This is an interesting case, as never in the history has it happened to encounter such a tremendous increase of evaluation of the funds obtained. For now, nobody knows what it will happen.