Ciena Corporation (NYSE: CIEN) delivered a blowout fiscal second quarter on Thursday, reporting revenue of $1.57 billion -- up 40% year-over-year -- and adjusted earnings of $1.64 per share, a 290% jump from the same period last year. Both figures sailed past Wall Street expectations, which had called for $1.45 in adjusted EPS on roughly $1.50 billion in revenue. Moreover, the networking giant raised its full-year revenue guidance, pointing squarely at AI-driven bandwidth demand as the engine behind its momentum.

A Quarter Defined by Operating Leverage

Beyond the headline numbers, Ciena’s profitability told an even stronger story. Adjusted gross margin expanded to 44.9% from 41.0% a year ago, while adjusted operating margin more than doubled to 19.5% from 8.2%. As a result, adjusted EBITDA nearly tripled to $341.8 million.

“We delivered strong fiscal second quarter results, marked by significant year-over-year revenue growth, adjusted gross margin expansion, and nearly fourfold growth in adjusted earnings per share,” said CFO Marc Graff, adding that the company’s operating leverage gives it “confidence in continued earnings expansion.”

Optical and Routing Lead the Charge

Drilling into the segments, Optical Networking generated $1.10 billion in revenue -- 70% of the total -- up sharply from $773.6 million a year earlier. Meanwhile, Routing and Switching grew even faster in percentage terms, surging 88% to $174.2 million. Global Services added $179.4 million, rounding out a quarter in which nearly every business line moved higher.

Notably, two customers each accounted for more than 10% of revenue, combining for 34% of the total -- a concentration that underscores just how heavily cloud and AI infrastructure buildouts are driving the business.

Management Raises the Bar

Looking ahead, Ciena guided fiscal third-quarter revenue to $1.625 billion, plus or minus $50 million, with adjusted gross margin of roughly 45% and adjusted operating margin between 19% and 20%. More importantly, the company lifted its full-year fiscal 2026 revenue target to $6.3 billion, plus or minus $100 million -- a 32% year-over-year increase at the midpoint.

CEO Gary Smith framed the results as validation of the company’s long-term strategy. The company aims to lead in high-speed connectivity “both across the WAN and in and around the data center,” he said, positioning Ciena to capture “structural, multi-year opportunities created by AI-driven demand.”

In addition, the company continued returning capital to shareholders, repurchasing approximately 200,000 shares for $83.1 million under its $1 billion buyback program.

The Market Reaction Tells Another Story

Despite the across-the-board beat and raised outlook, CIEN shares plunged more than 16% in Thursday trading. The selloff arrived amid a brutal session for networking and semiconductor names -- Broadcom (NASDAQ: AVGO) fell roughly 15% after its own AI chip forecast disappointed, dragging Marvell (NASDAQ: MRVL), Intel (NASDAQ: INTC), and the broader complex lower. After a powerful run into the print, even a 40%-growth quarter wasn’t enough to satisfy expectations that had clearly raced ahead of the stock.

Ultimately, the divergence between Ciena’s fundamentals and Thursday’s tape leaves investors with a familiar question in this AI cycle: was the quarter the problem, or was the price?

The post Ciena Crushes Fiscal Q2 Estimates and Raises Full-Year Outlook on AI-Driven Demand appeared first on PRISM MarketView.

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