Coherent Shares Slide as Market Weighs Ambitious AI Infrastructure Plans

Despite unveiling advanced 1.6T/3.2T InP components for AI data centers at OFC 2026, Coherent's stock fell sharply as investors took profits after a 240% rally.

Despite unveiling a significant technological roadmap aimed at dominating next-generation AI infrastructure, Coherent saw its equity value decline sharply in Friday's trading session. The sell-off occurred as the company presented its vision at the OFC 2026 industry event in Los Angeles.

Building the Backbone for AI Data Centers

A core focus of the company's exhibition was its indium phosphide (InP) technology platform. Coherent demonstrated components designed for advanced 1.6T and 3.2T network architectures, which are considered critical for handling the massive data loads generated by modern artificial intelligence applications. A key development highlighted was a new 400-mW high-power laser for co-packaged optics (CPO), a step forward in creating more efficient data center hardware.

The technology showcase extended to new photodiodes and modulators engineered specifically for the speed and efficiency demands of AI-driven computing. These parts are intended to address signal processing bottlenecks within global data center networks.

Scaling Production to Meet Anticipated Demand

To support the expected surge in demand for these components, Coherent is expanding its manufacturing capacity for 6-inch InP wafers. This production scale-up is taking place across its facilities in Sweden, the United States, and Switzerland. The global expansion strategy is designed to ensure reliable supply as the industry transitions to increasingly faster transceiver modules. The company's approach involves a platform strategy that integrates silicon photonics with its InP-based solutions.

Market Reaction Contrasts with Technological Showcase

The market's response to these ambitious plans was decidedly negative on the day. Coherent's stock price retreated by more than nine percent, falling to 217.00 euros. This pullback follows an impressive twelve-month rally during which the shares had appreciated by over 240 percent. The current price action suggests investors are taking profits, moving the stock further away from its 52-week high of 256.00 euros.

While Coherent has effectively outlined the technological foundation it believes will power the next phase of AI sector growth, the commercial adoption timeline remains a focal point. The speed at which major cloud service providers integrate these new standards into their infrastructure will be a crucial determinant of the company's future performance.