But the Vanity article explicitly states that the "Jury" asked him whether he took the strats (the trading strategies) and he said "No."; the response from the "Jury" was telling, they said "Why not take the valuable stuff?"

Pricing algorithms are different from trading strategies (although they're obviously related). In any case that's purely a matter of evidence, he either copied a piece of code or he didn't.

But breach of contract and copyright are civil issues, not criminal (modulo the insane copyright criminality laws of late). Besides, no damages have ever been postulated, let alone proved.

Trade secret violations can be prosecuted under criminal law, any company can request a criminal investigation in such a case. In the last decade there have been around 100 criminal convictions for theft of trade secrets.

Was that mentioned in the article? If it was, I missed it.

If he did copy such algorithms with the intention to use them at the new job, that would contradict both my comment and Lewis' portrayal.