A former financial analyst at NVIDIA pleaded guilty today of criminal conspiracy and insider trading charges. Sonny Nguyen, 39, agreed to provide material nonpublic information he gathered in his role at NVIDIA to peers in an insider trading ring that allegedly spanned, among others, Winifred Jiau, a commonly used expert Primary Global Research LLC network of consultants.

Though “Wini” has not yet plead guilty, she has come under allegations of participating in and promoting insider trading through her engagement with Primary Global. It seems that Nguyen was perhaps one of whom she meant when she was quoted as saying, “As soon as I get it, I give you guys a buzz.”

It would almost seem that the probe is widening, but it’s not. If anything, it appears to be narrowing.

Today’s news began with open speculation by the WSJ that investigators shifted their focus to the principals of Primary Global: Unni Narayanan and Phani Saripella. The shift would appear to match the circumstances. Nguyen claims to have provided Wini inside information. Sam Barai, best known for his colorful instructions to his analyst who had been cooperating with investigators, pleaded guilty today and, according to the WSJ, “the probe of Messrs. Narayanan and Saripella, both former employees of Intel Corp., is being aided by one of their former clients, former hedge-fund founder Sam Barai.”

Investigators have illuminated what looks like a rich vein of corruption, circumscribed by a series of bad actors, both admitted and alleged. If no more convictions come of this, at least it will serve as a lesson describing the importance of compliance policies, procedures, and systems organized by industry-leaders, such as Gerson Lehrman Group, when speaking with outside experts, and at most, it may provide the contours of a gripping movie.