Also

* Morgan Stanley cut 15% of the senior managers who oversaw its retail brokerage operations in the New York area.

* Calpine Corp., a power producer that filed for bankruptcy protection last year, agreed to sell its 45% stake in a plant being built in Mexico to Japan’s Mitsui & Co. and Chubu Electric Power Co. for about $43 million.

* Comptel, a group representing telephone and Internet companies, challenged action by U.S. regulators that freed Verizon Communications from rules on broadband data services for businesses.