Bizlink is a beneficiary of Nvidia's faster-than-expected co-packaged optics ramp, because CPO carries higher content for it than near-packaged optics. Spectrum-X CPO switches are in mass production as key component yields improve, with scale-out switch shipments forecast at 15k in 4Q26 and 100k in 2027. Scale-up optical engine estimates were revised to 6.5m in 2027 and 42m in 2028, as NVL576 is intact but Trainium 4 is slower. Full NPO adoption is retained for the cycle. x.com  x.com 

Co-packaged optics adoption is a matter of when, not if, so any further drop in optics stocks on NVIDIA's delay could be a great entry for those who missed the rally. SemiAnalysis reports NVIDIA's Kyber NVL144 rack has been delayed more than 12 months to 2028 and its NVL72x2 back-to-back architecture cancelled, leaving Rubin Ultra with a limited scale-up domain. x.com 

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 

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 

Coherent's booked InP laser capacity gives it a potential path into Nvidia's CPO expansion. Nvidia wants optical-engine capacity up 15x by mid-2027 and holds laser purchase commitments and capacity rights from its $2B Coherent investment. Coherent says fiscal 2027 is essentially booked and customers are reserving into 2028, but most near-term orders are for pluggables and other products; scale-up CPO revenue starts only in H2 2027. Neither company has sized Nvidia's rights. x.com 

Sivers is less exposed to tighter AI financing because its 700M SEK raise funds a buildout largely reliant on external foundries. It is qualifying with Ayar, Jabil, GlobalFoundries and O-Net for potential tier-one hyperscaler pluggable, CPO and NPO deployments. Higher rates may strain neoclouds needing billions for GPUs, but optical content and aggregate demand should still rise even if hyperscaler AI capex falls, especially as new players start qualification. x.com 

Credo Technology's copper interconnects should do well after SemiAnalysis reported that Nvidia's Kyber NVL144 rack has been delayed by more than 12 months to 2028 and its NVL72x2 back-to-back architecture was cancelled, leaving Rubin Ultra with a limited scale-up domain. x.com 

Credo is a main winner if the story @HyungsokAhn describes proves true, in which copper, pluggables, legacy power and testing benefit while co-packaged optics and 800VDC lose out. x.com 

Sivers Semiconductors is crossing from an engineering and NRE model to a product-led component model, a shift that earns very different multiples. FY2025 revenue rose 25% to SEK304.1m, product revenue reached SEK85.7m (about 28% of sales), and it entered 2026 with a $453m non-binding pipeline. Wireless is the nearer-term, more de-risked engine; photonics for AI interconnects carries larger long-duration upside. The risk is that losses and negative cash flow dilute equity before products scale. … Show more

Credo and a few DSP players stand to benefit from the shift @jukan05 describes away from co-packaged optics. Per @jukan05, the spec downgrade of NVIDIA's Rubin Ultra is bullish for the near-package optics supply chain and bearish for the CPO supply chain. x.com