> Is there is some objective way that the SEC or FINRA detected activity that IB failed to report? Probably not. I suspect there was an IB-employed whistleblo

> Is there is some objective way that the SEC or FINRA detected activity that IB failed to report? Probably not. I suspect there was an IB-employed whistleblower... or perhaps what happened was that the SEC was already investigating some IB customer (for insider trading, market manipulation, etc.) and then, having become aware of one or more transactions that should have been reported, went digging at IB to see what else hadn't been.