Wiretaps of hundreds of conversations have led federal authorities to pursue charges against individuals at two well-known hedge funds and an established mutual fund that caters to ordinary retail investors. The targets are former traders at hedge funds Diamondback Capital management LLC and Level Global Investors LP, and an analyst at mutual fund company Neuberger Berman Group LLC. If charges are brought, they would represent a substantial expansion of the insider trading investigations underway. Word is that two former research analysts at Level Global and Diamondback are cooperating with authorities. (“More Charges Set for Insider Probe,” Wall Street Journal).