Semtech does not deserve its status as a hot optical stock, since it is mostly a low-quality analog business with only a couple of data center parts. The move has been striking, though being wrong is possible. 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 

Semtech's high-power lasers offer upside because its fiscal 2030 target counts only a very moderate contribution from them. Management says data-center revenue will more than double this year and next on backlog; it plans to grow laser capacity three to four times by year-end as demand exceeds supply. Around $140, shares trade near 11 times Semtech's $12.40-$13 fiscal 2030 adjusted EPS target. Qualification and shipments must make the laser ramp credible in fiscal 2029-30. x.com  x.com 

Broadcom's diverse networking exposure makes it one of the best positioned in the theme. The market has overlooked it year to date. Optical DSPs, Tomahawk and Jericho underpin the view; Tomahawk 6/7 ramps in 2027, and Tomahawk Ultra and optical DSPs should accelerate growth. New XPU customers and extended hyperscaler deals add to earnings upside and an eventual re-rating. Risks remain, and weak semiconductor flows warrant caution about calling a bottom. 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

Semtech's analyst-day growth outlook makes the stock look cheap if guidance holds. Management guided to $3.2B FY30 revenue at 38% CAGR and estimated 70% gross and 48-50% operating margins. Backlog alone underpins more than doubling datacenter revenue in FY27 and FY28, versus the 80% and 70% previously modeled; LoRa's 30% CAGR tops the prior 20% assumption. Later forecasts are more conservative, so growth could beat 38%. At 25x FY30 earnings (January 2030), the stock should trade at $320. x.com  … Show more

Credo is one of the cheapest AI growth stocks, trading around 26x forward earnings after a hard correction while revenue grew 115% to $479M and full-year growth is guided above 85%. Margin worries mostly reflect DustPhotonics amortization and stock comp; non-GAAP gross margin held near 68%. DustPhotonics adds a second engine in optics, with over $600M expected this year, and Credo's low-laser designs can ship through the laser shortage. One customer at about a third of revenue is the main risk. … Show more

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

Semtech is gaining share in a growing market, with content per unit about to jump and a higher-margin business left after its divestiture. FiberEdge's 800G share rose from 18% to over 50% as transceiver units roughly tripled, and it expects over 50% of 1.6T this year. Content per transceiver rises from high single digits to $80-90 as the industry moves to 3.2T in 18-24 months. Gross margin should start at 64% after the cellular module sale, versus 53% two quarters ago. x.com 

Networking is the next AI hardware trade after memory, whose share of rack value rose from 15% to 35%. Optics is moving inside the server, as Nvidia's Feynman architecture builds in co-packaged optics and silicon photonics. Scale-across networking could grow 30% a year just linking existing data centers, as inference moves closer to users and training spreads across sites. Supply is tight: Lumentum's CEO said it can meet only 30% of expected 2027 demand and sees optics tighter than memory. x.com