On August 4, Ciena rose 6.4% in regular trading, trading at $413.93/share, with turnover of $160 million. The stock extended its pre-market gains as the broader optical communications sector staged a broad-based recovery following the prior session's nearly 5% collective selloff triggered by earnings guidance concerns.

After a swift round of selling pressure was released, sector peers rallied in tandem, with Applied Optoelectronics up 15.4%, Nokia up 7.68%, Lumentum up 7.58%, Cisco up 4.08%, and Arista Networks up 3.46%. On the fundamental side, Ciena's latest interim report showed revenue of $2.998 billion, up 36.38% year-over-year, with net profit surging 588.26%. BNP Paribas previously raised its price target to $640 while maintaining an Outperform rating, providing solid fundamental support for the stock's recovery from oversold levels.

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