CIEN ▲ +1.5% - Ciena Corporation $CIEN Raises FY26 Revenue guidance to $6.42 billion plus or minus $50 million vs $6.11B est.; Revenue guidance for Q4 $1.75B, plus or minus $50 million vs. $1.7B Ciena Corporation rose 1.5% after raising its full-year 2026 revenue guidance to $6.42 billion, up from the prior $6.11 billion consensus estimate. The company also guided Q4 revenue to $1.75 billion, slightly above the $1.7 billion expectation, signaling stronger-than-anticipated demand across its business. 03-SEP-2026 07:05 AM ET