Salomon Brothers bank analyst Carole Berger Tuesday downgraded six regional and superregional banks to "hold" from "buy," citing cyclical economic factors that could limit their earnings growth for the next two years.

"It'll be a more difficult operating environment in 1996 for all banks," said Ms. Berger, who pared her list of recommended bank stocks to 11 from 17, downgrading Banc One Corp., First Chicago Corp., National City Corp., Marshall & Ilsley Corp., Keycorp, and First Union Corp.

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