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 

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 

The photonics-as-AI-bottleneck claim has faded, leaving Lumentum facing more pain before the theme recovers. A large December options node sits at $600; the stock bot targets downside at $650 and $595, with $581 a possible liquidity sweep where smart money would buy instead of rushing in at $650 or $630. Most photonics companies will likely never come back. 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 

Lumentum's AI-optics case gains longer supply visibility: CEO Michael Hurlston says capacity is effectively sold out through early 2029 and expects roughly 70% of demand for some products to go unmet through 2027; others could face roughly 30% unmet demand through 2028. Scarcity could support pricing, but earnings growth depends on capacity expansion and yield improvements translating into shipments, revenue and margins. 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 

AI networking and optics growth underpins an extremely bullish outlook for Lumentum, Coherent, Marvell, Credo, Astera Labs and Broadcom. BofA estimates AI networking will grow from $95.6B in 2026 to $394B in 2030, with optical reaching $111B and co-packaged and near-packaged optics reaching $14.1B and $10.7B. Photonics is one of the most interesting investment themes for 2027 onward, though it is a complex market with many players. 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 

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 

Optical suppliers face demand beyond capacity, strengthening the sector's case for the coming months. Lumentum's CEO says it is effectively sold out through early 2029; Ciena says lead times limit growth, and Coherent cites constraints across nearly every product line. Applied Optoelectronics doubled its share count to expand capacity and meet demand. Soitec raised guidance twice this year; Marvell raised guidance and its 2030 TAM, while Broadcom sees 4x EPS by 2030 on visible demand. x.com