James Murdoch is done. He and his father both know that. His testimony curdled as he emitted it, and within two days a couple of former News Corporation executives publicly challenged it. The hooks are still in him, as Prime Minister David Cameron made clear when he said James still had “questions to answer.” And so he will, gradually sinking further into the mess he has overseen.

Oddly, the News Corporation’s stock began to tick up during the hearings as Rupert Murdoch testified, his large hands thumping as he dropped them to the table. But it was less about his performance than about the clear message that emerged: an era had ended. The family business is splintering. If James is out, as would seem to be the case, will his other offspring, Elisabeth and Lachlan, come swinging into view? I and others doubt that the charms of a global media enterprise being run as a corner grocery store will continue.

While the family reign seems certain to fracture, the News Corporation’s own fortunes are less predictable. A report by the analyst Michael Nathanson of Nomura Capital Investments nicely captured the moment. The market does not care if you have done bad things; it cares when you get caught.

“While we remain disappointed by the actions of a muckraking newspaper and frustrated that perhaps the least-valuable asset in the News Corp. portfolio could cause this much value destruction,” Mr. Nathanson wrote, “we continue to believe that the risk/reward for News Corp. investors remains positive.”

Reached later by phone, Mr. Nathanson suggested that the News Corporation had been cornered into doing the right thing, after doing a lot of not-so-right things. The fact that the company moved swiftly to buy back its stock — approving $5 billion of the oodles of cash the company has on hand — calmed the markets, if not the troubled waters that the company finds itself in.

“The loss of the BSkyB deal is significant and not good for the company, but in the long term, I think this will force the company to take a hard look at where they are putting capital,” he said, referring to the company’s abandoned bid for British Sky Broadcasting, Britain’s most lucrative satellite television network.

Historically, Mr. Murdoch has used the digital and broadcast parts of his empire to make money, and the more quotidian assets — newspapers, family influence and raw political power — to create running room for the rest of the organization. That was fine as far as it went.