As Sorkin and Lattman say, the statute of limitations on this trade is rapidly running out: if the SEC will have to either bring charges against Cohen soon, or not at all. And so long as Martoma is refusing to cooperate with the SEC, it increasingly seems as though the SEC’s best chance yet to nail Cohen is going to slip through its hands.

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Felix Salmon is an Audit contributor. He's also the finance blogger for Reuters; this post can also be found at Reuters.com.