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Deep & Emerging Tech·August 26, 2026·1 min read

China’s Grip on Erbium and Yttrium Could Choke Data Center Growth

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Rare earth risk for AI isn’t just about magnets anymore—erbium and yttrium are upstream of optical amplifiers and high‑bandwidth links that keep modern data centers usable. Infra teams scaling GPU clusters should be mapping exposure to Chinese-controlled REE supply now, alongside power and water.

Deep & Emerging Tech

Getting Harder for Nvidia to Compete, Says Seaport’s Goldberg

When public-market analysts say there’s “more that can go wrong than right” for Nvidia, they’re really talking about how fragile the AI capex boom is to any wobble in demand, pricing, or supply. If you’re planning multi-year GPU-heavy bets, bake in scenarios where unit economics improve slower than expected and alternative accelerators gain share faster than your current roadmap assumes.