POET Technologies is uninvestable because its management has lost the trust of the big players. In April its CFO leaked information that led to the cancellation of Celestial AI and Marvell contracts. Being early in interposers and packaging does not make it a co-packaged optics winner, as others will catch up. Its TFLN partner QCI trails Hyperlight and is stuck on a 6-inch line, with no 8-inch wafer demo yet to show it can scale. x.com  x.com 

POET Technologies' management team is inept, and management quality is make-or-break for investing in a company. POET breached its NDA with Marvell by confirming a purchase order after a short report, and Marvell then cancelled all its Celestial AI orders, per @Kaizen_Investor, sending the stock down almost 50%. x.com  x.com 

POET Technologies' 47% one-day plunge was self-inflicted, not a technology problem, making it an easy buy. Marvell, which bought Celestial AI in February, pulled Celestial's orders citing a confidentiality breach after POET's CFO confirmed the order on Stocktwits. The stock has since rebounded 211.67% in two weeks. x.com 

POET looks headed toward zero after Marvell cancelled its Celestial AI orders over a confidentiality breach, costing POET basically its only big customer. With only three or four major end customers, who could use COUPE instead, no revenue and ongoing cash burn, its reputation may never recover. The Marvell contract likely helped its $300M-plus raise, so investors may sue for their money back, and the stock could easily fall below $5. x.com  x.com  x.com  x.com  x.com  x.com  x.com  x.com  x.com  x.com  … Show more

POET Technologies' rally is incredibly fragile after Marvell canceled all purchase orders tied to Celestial AI, including initial production orders, per @wallstengine. POET says the cancellation stems from alleged confidentiality breaches and that it still serves other customers, including a separate $5M order. x.com 

POET Technologies is the upstream pick-and-shovel for Celestial AI's Photonic Fabric, which Marvell just acquired for about $5B. POET supplies the light source that powers it, and Marvell has the hyperscaler relationships with AWS, Google and Meta to deploy it at scale. Revenue is still early, but once Marvell integrates Celestial and ramps production orders, the market should recognize POET's value; Q3 or Q4 2026 could be the inflection, and patience is required. x.com 

POET Technologies' customer concentration risk is now becoming reality. Its Celestial AI partnership was never enough to justify owning it, since POET does not execute at Marvell's level and carried clear customer concentration risk. x.com 

Owning Lumentum's laser fab could secure Marvell's FY28 supply and hedge its DSP franchise as optical links shift to CPO. The rumored deal's strategy makes sense, but short-term pain is likely: at a 30% premium, roughly $17.5B in new debt and the rest in stock, rough math puts EPS dilution near 15%. It turns accretive only if Lumentum outgrows Marvell at today's guided rates for five or six more quarters, which looks achievable while the laser shortage lasts. x.com  x.com  x.com 

POET Technologies has a path forward after Marvell in 800G/1.6T pluggables, now confirmed by a Lumilens supply and joint development deal. Lumilens placed an initial $50 million order for POET's Electrical-Optical Interposer engines, potentially exceeding $500 million over five years, with a roadmap through near-package and co-packaged optics. Engineering samples are targeted for late 2026 and production in 2027, subject to development and qualification. POET granted Lumilens warrants at $8.25. … Show more

POET's place in the optical stack is weaker than its narrative implied, as Marvell's cancellation of all its orders shows. Marvell cited an NDA breach, but critical suppliers don't get fired over disclosure issues; they get a phone call. If POET were load-bearing or a competitive threat, Marvell would keep orders running or buy it outright, not cancel. A Tier-1 customer is a signal, not a moat, and pilot orders are not validation; if switching suppliers costs little, POET doesn't control a node. … Show more