Optics and photonics should be among AI's biggest winners as faster GPU networks need optical connections that suppliers cannot expand quickly enough. Lumentum says some components are sold out through early 2029; Sivers is investing $30M to target more than 100M lasers a year, with operations expected in Q4 2027. Potential US restrictions on Chinese transceivers could reshape supply in 2027. Applied Optoelectronics and Sivers are the favorites. x.com  x.com 

AI bandwidth demand still favors Coherent and Lumentum, but tight customer financing can delay orders and lasting valuations need durable profits. A model provider losing share need not reduce total bandwidth use. Coherent could beat and raise guidance; Lumentum may only meet estimates this quarter, improving next quarter. If margins partly reflect scarce indium phosphide, added supply will test whether upgrades, volume and cost gains sustain earnings. These earnings calls remain forecasts. … Show more

AI bottleneck semiconductor stocks look to have gotten ahead of themselves, with roughly a hundred near-vertical charts where downside now seems to outweigh upside. They are semis and highly cyclical, and many smaller caps may end up trading like meme stocks. A substantial shakeout would offer a better entry. AI, robotics and energy still have years of growth ahead, but chasing these names now is not advisable. x.com  x.com  x.com  x.com  x.com 

Rising 1.6T switching demand favors optical suppliers, though their execution risks vary. Bank of America says the market could grow ~101% annually through 2030. Marvell's leading DSPs and Lumentum's supply-short 200G EML lasers are lowest risk; Applied Optoelectronics' capacity expansion and Fabrinet's customer concentration make them medium risk. Aeluma remains pre-commercial, while Lightwave Logic's polymer modulators are a high-risk moonshot despite its TSM partnership. x.com 

Photonics stocks remain attractive as AI optical-component demand exceeds supply: Lumentum's CEO says the company cannot meet 70% of demand for some products through 2027 or 30% for others through 2028, with some components sold out into early 2029. The cited basket is LITE, MRVL, AAOI, COHR, SIVE and AEHR. x.com 

Applied Optoelectronics, Lumentum and Coherent face share losses at US hyperscalers to Innolight. Channel checks favor Innolight gaining share in Q2 2026, at the expense of those three. Per @poezhao0605, a $7B Hong Kong IPO, the largest in years and upsized from $5B on strong demand, has cleared its listing hearing. x.com 

Photonics leaders' demand now outruns supply into 2027-2028. Lumentum and Coherent each have $2B Nvidia deals, with Lumentum lasers sold out through 2028 and Coherent orders reaching 2028. AAOI demand exceeds capacity through mid-2027; Ciena has a record $7.7B backlog. Credo targets $600M of FY2027 optical revenue, POET has a $500M five-year framework, AXT's InP backlog tops $100M as capacity doubles, and Sivers' pipeline is up 77% YTD to about $799M. x.com 

Interconnect, not compute, is now the binding constraint on AI clusters. Copper, pluggable optics and CPO will coexist for years, so the strongest names span both paths or own the tightest bottleneck. Top five: Credo, the fastest-growing full stack; Applied Optoelectronics, the 800G/1.6T ramp; Marvell, broadest but richly priced; Lumentum, the laser chokepoint; Tower, the foundry bet. Coherent, Amphenol, Fabrinet, GlobalFoundries, TSMC and Broadcom also gain. Astera Labs is pricier and narrower. … Show more

Optical component stocks such as Lumentum, Coherent, Applied Optoelectronics and AXT look early in an unwind, as a wave of new photonics paid newsletters signals a crowded narrative. Price pays; narratives do not. x.com 

Lumentum, Coherent and Applied Optoelectronics remain buys amid AI optics demand: Lumentum's CEO said its AI optical parts are completely sold out through early 2029. x.com