Ticker Talk

High-speed Internet access-equipment firm Redback Networks Inc. (RBAK) said its board approved a 2-for-1 stock split payable April 3 to shareholders of record March 20. Redback, whose shares have risen 28-fold since the company went public in May, slipped $14.69 to $327.69 on Wednesday in Nasdaq trading, though it rallied to $346.94 after hours. . . . T. Rowe Price Associates Inc. said it will close its $1.2-billion small-cap International Discovery Fund to new investors as of Monday.