Buying an entity's assets, in and of itself, proves nothing about the underlying solvency of the entity itself.
The filing of a creditor's bill, receivership or bankruptcy does.
Solvent companies have all or substantially all of the constituent assets purchased by outside interests all the time.
Many states, however, have bulk sales laws that require companies to notify creditors and state agencies before any bulk transfer can be effectuated
I pass no judgment on the solvency of Voldy as I have no idea, but lest anyone be confused, the type of sale (stock vs. assets) has nothing to do with solvency.