Ciena (CIEN) Misses Q4 Earnings Estimates, Beats on Revenues Posted byZacks Equity Research December 10, 2021 Leave a comment on Ciena (CIEN) Misses Q4 Earnings Estimates, Beats on Revenues Ciena’s (CIEN) fourth-quarter fiscal 2021 results reflect solid top-line expansion as a result of robust demand dynamics and new wins supported by strong order flow and liquidity position.