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LandMark sees profit soar 650% in 1Q26, secures deal for 5-year InP substrate supply

What happened

LandMark Optoelectronics reported a 650% profit surge in Q1 2026 and secured a five-year InP substrate supply agreement with Sumitomo Electric Industries. Driven by strong demand from AI and silicon photonics, the deal ensures raw material security. Bullish for InP substrate market.

Impact and signal

High impactImpact score: 90/100

Affected components and suppliers

InP Substrate
LandMark OptoelectronicsSumitomo Electric Industries
InP SubstrateAISilicon PhotonicsSupply AgreementProfit Surge

Source and time

Source: DigiTimes Asia · 4/22/2026 · View original source

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