Coherent (NASDAQ: COHR) Rallies 7.78% on Record Q3 Results and $2B NVIDIA Investment

Coherent (NASDAQ: COHR) jumped 7.78% on Monday, May 11, 2026, closing at $361.35 after releasing record third-quarter results and announcing a landmark $2 billion strategic investment from NVIDIA. The optics and photonics supplier has emerged as a critical enabler of AI data center scaling, addressing the bottleneck in high-speed optical interconnect technology required for AI cluster communications.

By the Numbers

• Stock price: $361.35, +7.78% on Monday, May 11
• Market cap: $70.7 billion (TTM)
• Revenue growth (TTM): +20.5% year-over-year
• Forward price-to-earnings ratio (TTM): 45.11x
• Trailing price-to-earnings ratio (TTM): 171.36x

What Drove the Results

Coherent posted record Q3 results driven by surging demand for optical interconnect products used in large-scale AI data centers. The $2 billion NVIDIA investment validates Coherent's critical role in AI infrastructure: as model training scales to ever-larger cluster sizes, the interconnect fabric becomes the limiting factor. Optical technology enables higher bandwidth density and lower latency than copper-based alternatives, making it essential for next-generation data center architectures.

NVIDIA's investment signals confidence that Coherent can scale production to meet exploding demand from hyperscalers and AI chip makers. Stifel's bullish stance underscores Wall Street's recognition that optical bottlenecks represent a genuine, near-term opportunity for companies positioned to supply next-generation interconnect solutions.

Investor Takeaway

Coherent's 7.78% gain reflects the market's excitement around optical technology as a key AI infrastructure play. However, the stock's trailing P/E of 171.36x and forward P/E of 45.11x indicate aggressive valuations that price in sustained hypergrowth. NVIDIA's $2 billion investment reduces execution risk and validates demand, but investors should monitor gross margin trends, production capacity utilization, and customer concentration. Coherent's ability to scale manufacturing without eroding profitability will determine whether current valuations are justified.