Ciena and GitLab Shares Slump as Weak Guidance Overshadows Earnings Beats

Key Facts

1Ciena shares dropped 16% after issuing FY2026 revenue guidance of $5.9B-$6.3B, well below the $6.99B analyst consensus.

2GitLab shares fell 7% as its FY2027 EPS guidance midpoint of $0.78 missed the analyst consensus of $1.03.

3Both companies reported quarterly results that exceeded analyst estimates for both earnings and revenue prior to the outlook disappointment.

Shares of Ciena Corporation and GitLab Inc. experienced significant declines despite both companies reporting quarterly earnings and revenue that exceeded Wall Street estimates. Ciena's stock plummeted 16% after the company issued FY2026 revenue guidance between $5.9 billion and $6.3 billion, missing the analyst consensus of $6.99 billion. Similarly, GitLab shares fell 7% as its FY2027 earnings per share (EPS) guidance midpoint of $0.78 failed to meet the market expectation of $1.03. The sharp sell-off highlights a market environment that is increasingly sensitive to forward-looking growth projections within the tech and networking sectors. Investors clearly prioritized disappointing future outlooks over strong historical quarterly performance, leading to a bearish reaction across both instruments.