CoreWeave ripped 19% on a $100 billion-plus backlog and raised guidance, and the optical-interconnect choke exploded with it, while Meta fell 4% on capex and glasses headlines.

The neocloud layer set the pace. CoreWeave surged +19.3% to $107.73 after a Q2 report (out Tuesday evening) that beat on both lines — revenue of roughly $2.58 billion, up 112% year-on-year — and, more important, raised full-year guidance behind a contracted revenue backlog that management put north of $100 billion, with third-quarter revenue guided to $3.45–3.6 billion. That backlog is the clearest read yet on the AI-compute-capacity chokepoint: demand for GPU capacity is being booked years out, and the company renting it is compounding faster than the Street modeled. The print set the tone for a supply-side session in which the physical bottlenecks of the buildout outran the hyperscaler that funds them.

Nowhere was that clearer than the optical-interconnect choke, which went vertical. Lumentum jumped +13.6% to $932.47, Fabrinet +8.7% to $571.88 at the transceiver-assembly layer, Credo +8.3% to $268.16 in active electrical cables, Coherent +8.2% to $355.64, and Arista +6.4% to $210.50 at the switching layer. Optics is the connective tissue of the scale-up-and-scale-out fabric, and a $100 billion backlog at the compute layer is a direct read-through to the pluggables and fiber that lash the accelerators together. The equipment and memory names firmed alongside — Micron +4.9% to $911.29 at the HBM choke, Applied Materials +4.3% to $548.15 into its own report, Lam Research +4.7% to $326.11 and KLA +3.9% to $208.25 in process control.

The laggard was the demand signal's own equity. Meta fell −3.4% to $578.85, unable to hold a recovery above $600, on a cluster of headlines: renewed anxiety over a 2026 capital-spending plan running to $125–145 billion, a criminal complaint filed by a German advocacy group over its smart glasses, and the collapse of its planned acquisition of Chinese startup Manus. Microsoft (−2.3% to $492.43) and Amazon (−1.8% to $267.28) drifted with it. Read through the chokepoint frame, the very capex that pressured Meta is the cash that funds this vertical's entire supply chain — the hyperscaler equity wobbled on spending fear even as that spending writes the checks downstream.

The calendar is wall-to-wall this week. Applied Materials (fiscal Q3) and Coherent (Q4) both report August 13, Lumentum follows August 18 and Marvell August 20, Hot Chips runs at Stanford August 23–25, and Fabrinet prints around August 24 at the transceiver choke. NVIDIA — the master demand signal for the whole stack — reports August 26, with Broadcom on September 3. Structurally, watch the targeted Q3 close of Ecolab's ~$4.75 billion CoolIT acquisition at the liquid-cooling choke, and the OpenAI and Anthropic listing windows that would put the model layer's capital appetite directly on the tape.