Meanwhile, Janus Capital Group (JNS) and Wellington Management say they received an inquiry from authorities about insider trading.

FORBES: SAC Capital Hit With Subpoena

In the past, Janus Capital Group (nyse: JNS - news - people ) has added its entire bill for ICI dues to the expenses fund investors' pay, and Fidelity Investments has added an undisclosed portion.

FORBES: Insult And Injury

The lawsuit against Credit Suisse and others sketches a similar conspiracy, in which securities firms--with the help of big institutional customers including Fidelity and Janus Capital (nyse: JNS - news - people )--are accused of taking advantage of Internet fever to drive up the price of newly issued shares in the aftermarket.

FORBES: Wall Street Worries