Ann: TEN Group Enters Voluntary Administration, page-23

at this stage they are worthless.

Now, it's possible that in few months you will recover some of the value... maybe even all of the value from couple days ago.

It is unlikely though. It depends whether Ten is going to be rescued by government or private investor. If not, and they are forced to sell stuff out and basically transfer all their assets to new owners.
You lose all. Cause assets sale will not cover all the debts Ten has.

Channel Ten is going to survive.

Ten Network Holding, will most likely be stripped naked and dissolved, including your investment.

Don't count on recovering your investment unless some white knight with $200M will show up.