Applied Optoelectronics is considered 93% overvalued by a widely followed valuation narrative, which places fair value at $78 versus a closing price of $150.28. The company recently announced a multi-year supply agreement with Amazon, issued third quarter 2026 revenue guidance, and reported second quarter earnings with higher sales but continued net losses. At a market cap of roughly $6.6 to $6.7 billion, the stock trades at about 14 to 15 times trailing sales based on 2025 revenue of $455.7 million, and about 6.5 times forward sales if management achieves over $1 billion in 2026 revenue. The valuation assumes a successful 800G scale ramp, on-time 1.6T commercialization, margin expansion from low-30s gross margin, and no major customer reset.
