Plan Optik is not an AI or high-performance computing play, because all of its material is about wafers and it has no panel capability whatsoever. The glass panel cited as evidence was made with SCHMID and 4JET, not Plan Optik, and SCHMID is effectively a competitor in etching, deposition and metallization. Plan Optik has never said it targets HPC or AI, and it does everything in-house rather than through an OSAT, aiming at much smaller-scale applications. x.com  x.com 

LPKF looks a bit expensive after its recent share price run, even on @BrainyMarsupial's bullish meeting notes, which see at least three players ordering glass-substrate machines this year. Revenue remains difficult to forecast and a higher valuation cannot be counted on, which makes it hard to add more. x.com  x.com 

PlanOptik's latest report is likely its last transition report, with a very different company emerging as capacity ramps. Expectations are high for 2027 component launches showing what it can do with silicon, not just glass, followed by glass core substrates. Progress is already hidden in the numbers: automotive MEMS and sensors, historically most of revenue and weak, are holding. @KairosPraxis notes revenue grew 5.7% and EBITDA 8.9%, with heavy recent capex set to lift revenue and margins. … Show more

LPKF's glass-substrate story got priced in far ahead of reality, and high-volume scaling is still a 2027+ story. Its raised €1.7B 2030 TAM overstates the obtainable market once competitors, yields and dual-sourcing kick in, and the CEO said it is premature to call a supply-chain breakthrough. H1 revenue fell 38.3% to €36.5M as solar collapsed, adjusted EBIT was -€10.4M, and restructuring costs eat 3-4% of revenue. LIDE remains strategically important; 2028 margin execution is the thing to watch. … Show more

LPKF faces mostly lumpy, cancelable pilot-line revenue until 2029, while the market already prices in much of its glass substrate option. Volume demand for its glass equipment hinges on TSMC and NVIDIA choosing glass for CoPoS panel packaging; that wave lands around 2028-29 and could slip to end-2030 on warpage and yield issues. Absolics' and Semco's 2027 plans are qualification. The real signals are TSMC's CoPoS tool-vendor selection and an LPKF order above EUR 10M naming a Tier-1 customer. … Show more

PlanOptik looks massively mispriced at a €35M market cap if it is the bottleneck for the glass wafers behind Silex's MEMS business ahead of the 2027 ramp. Per @ren_stocks, PlanOptik's specialty glass wafers feed Silex Microsystems' MEMS mirror dies, which go into Lumentum's optical circuit switches for Google's AI data centers. Silex earned a 34% EBIT margin in Q1 2026, and its IPO valued it at SEK 8.9 billion. x.com 

Corning remains a long-term AI infrastructure winner even after Morgan Stanley's cooling note, as demand for fiber, optical materials and future glass substrates keeps growing. Per Morgan Stanley, the roughly 40% one-month rally outran fundamentals, driven by Fujikura's raised outlook, the GlassBridge fiber-to-chip platform, Nvidia long-haul fiber rumors and short covering, and high Q2 expectations could add volatility. GlassBridge gives Corning more room in next-generation optical links. x.com 

Schmid Group is moments from dilution, with almost no room for error in its cash runway. That financial position is critical to any comparison of glass-substrate plays, even as a post the author replies to argues upstream suppliers gain pricing power after Intel's CFO called glass a margin headwind. x.com 

Plan Optik's revenue has not yet grown with Lumentum's because Lumentum is currently growing through pluggable optics, while Plan Optik supplies co-packaged optics. Its payoff is therefore more of a 2027-2028 story. x.com 

PlanOptik sits upstream of Lumentum's optical circuit switch supply chain, a link the market is only starting to price. Silex research materials and patent language directly mention PlanOptik as a glass wafer substrate supplier, and Silex, the leading pure-play MEMS foundry, is a key optical-switch supplier to Lumentum. That puts a €50M-market-cap German glass wafer maker in the middle of the AI data center buildout. Credit to @vlmkapital for the finding. x.com