Applied Optoelectronics, Lumen and Coherent are the obvious beneficiaries of a US draft ban on Chinese data center components, reported by Reuters, and are already gapping up. x.com 

Western firms replacing China-dependent AI supply chains should be the next big winners. The Chinese transceiver ban is just the start; per @CKCapitalxx, memory makers CXMT and YMTC look like the next domino after FCC bans on Chinese robots and inverters. Beneficiaries span optics (Applied Optoelectronics, Coherent, Lumentum), power and cooling (Vertiv, Vicor, Modine), packaging (Amkor, Onto, Kulicke), servers (Dell, HPE, Super Micro), onsemi, Wolfspeed, MP Materials and Energy Fuels. x.com 

Corning is getting a lift as an optics-materials play from Trump's ban on Chinese products. The stock also made a clean bounce off its rising 200-day moving average. x.com 

Credo is well placed if the US restricts Chinese optical transceivers from 3.2T, because it now has a full non-Chinese optical stack. Its $750M DustPhotonics acquisition brought in-house silicon photonics for 800G, 1.6T and 3.2T, including co-packaged optics, alongside its own DSPs and SerDes. If optics supply tightens, more short links stay on copper, which is Credo's AEC business. Management already expected optical lines to top $600M next year before this. x.com 

US chip stocks could gain over the next two weeks because Trump's China visit may lift years of US restrictions on high-end chip sales, equipment and technology to China. Jensen Huang joining the trip mid-way points to that, with Nvidia's share of China's high-end chip market near zero and Korean chipmakers also out of China. The US may use chip relaxation as leverage in talks over China's rare-earth export controls, within more than $250 billion of business and investment deals signed. x.com 

China's entry into chip design and fabrication is a structural change: stop fading China as Western AI chip and cloud leaders get steeply discounted. China dominates nearly every manufacturing category; with multi-patterning its DUV tools perform near newer nodes and could scale massively or reach EUV. Chinese open models co-designed for Chinese chips could pull sovereignty-minded countries onto its tech stack. As Ford fared after China joined the WTO, so may Nvidia, ASML, TSMC and AWS by 2050. … Show more

AXT's indium phosphide business is at China's mercy, since its expansion inside China lets Beijing decide every line item on every purchase order. Per a report shared by @wallstengine, US officials are pressing China over delayed InP export approvals as the material becomes an AI data center bottleneck, and AXT says export permits are its biggest challenge. The stock was rejected at resistance despite that news. x.com  x.com  x.com 

Lumentum and Coherent sit at the center of a multiplicative optical bottleneck, where parts, capacity, yield and customer sign-off each limit output. Next-gen AI clusters need optical interconnect, and McKinsey sees 800G transceiver output 40-60% short of demand through 2027 as the market doubles to $26B in 2026. Nvidia invested $2B each in both to lock in laser supply, and the FCC is drafting curbs on Chinese transceiver imports; Chinese suppliers hold ~60% of optical-component revenue. x.com  … Show more

Broadcom controls a growing share of scarce laser supply that fabless rivals must buy from. It said its indium phosphide laser fabs are growing over 3x year on year, while Marvell, MediaTek, Alchip and GUC have no InP fab. Per TrendForce, Broadcom, Lumentum and Sumitomo hold 55% of EML and CW-DFB capacity. If Broadcom says most added InP output goes to module makers, the squeeze on fabless rivals loosens. Separately, permitted sites, not chip demand, increasingly set the deployment calendar. … Show more

Kopin, with partner SBLX, may have cracked MicroLED-based optical interconnects, the holy grail for interconnects, which are the main bottleneck in AI data centers. No other public company has announced one, and Kopin builds on MicroLED products it developed for the US Army. Copper-interconnect leader Credo is worth about $20 billion and just paid $750M for DustPhotonics, while Kopin is about $500M and SBLX under $50M in what is described as a $100B industry. x.com  x.com