How are they doing?
As the entire idea behind going private (other than to ensure that no one could take the company away from Dell's not quite competent leadership), was to hide their successes, and particularly their failures, from public scrutiny, we have no idea how Dell is doing.
They've been criticized for making large software purchases which have added no value to the company. Are they adding value now that we have no idea what Dell is doing? It's doubtful.
Dell's marketshare has risen, not because of wonderful sales results, but rather because their sales have fallen more slowly than it has for some others. Not exactly an encouraging result.
Right now, any talk about Dell is simply speculation, not backed by facts.