Robert Khuzami

It has been a big week so far for the market cops at the Securities & Exchange Commission: Each day brought a new multimillion-dollar settlement, most involving high-profile people or companies—Bank of America (BAC), General Electric (GE), and two former executives of American International Group (AIG), plus two smaller trading firms.

Insider-trading scandals have been a fact of market life since the Dutch were hawking East India Tea. And the high-stakes bust on Oct. 16 of Raj Rajaratnam, the billionaire founder of hedge fund Galleon Management, for allegedly trafficking in ill-gotten information includes the usual array of investment analysts, corporate executives, and clock-punching interlopers.