On July 16, Ciena fell 3.04% in pre-market trading to $406.01/share, with turnover of $598,300. The decline was triggered by the company's disclosure on July 15 of a major shareholder's proposed sale of securities, compounding ongoing selling pressure across the optical communications sector.

The optical communications sector has been in sustained retreat since its collective surge on July 9, driven by NVIDIA's ultra-high capacity long-distance transmission network project. A brief rebound on July 14 proved short-lived, with profit-taking pressure yet to be fully exhausted. Investment bank Stifel previously noted that the current AI hardware selloff should be viewed as a rational valuation reset rather than a signal of weakening demand, with market expectations having run ahead of fundamentals.

On the fundamental side, Ciena's latest interim results showed revenue of $2.998 billion, up 36.38% year-over-year, with net profit surging 588.26%. Multiple institutions maintain overweight ratings, and BNP Paribas recently raised its price target to $640 from $625.

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