The Physical Layer

AI and energy infrastructure, explained plainly.

Companies

Seagate

On the map: Chips and the factories that make them

Named in one piece. Each entry below is that piece's own description of what the company makes, from its exposure map.

  1. Memory and storage

    Micron, SK Hynix and Samsung make HBM. Seagate, Western Digital and Toshiba make hard drives.

    The chip supply chain's slow parts are sold years before they are made · 14 July 2026

This maps who operates in each layer. It is not a recommendation, and naming a company is not a view on its shares. Personal research, not investment advice.