Ciena Returns to S&P 500 After 17-Year Absence
ByAinvest
Wednesday, Feb 4, 2026 7:12 pm ET1min read
CIEN--
Ciena returns to the S&P 500 after 17 years, replacing Dayforce. The networking hardware maker's stock rose in extended trading. Ciena sells high-speed fiber optical network products, with 18% revenue coming from an unnamed cloud provider and 11% from AT&T. The company's market cap has almost tripled in the past year.
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