Equinix, Inc.

Equinix, Inc. is the world's largest multi-tenant data center operator, providing colocation, interconnection, and digital infrastructure services across 280 facilities in 77 markets and 36 countries, generating $9.26 billion in revenue in fiscal 2025. It is not a cloud provider, not a telecom carrier, and not a hyperscale builder — though it serves all three. Equinix is the neutral meeting place where the internet's plumbing connects, and that neutrality is the source of both its competitive advantage and its valuation premium.

This is a story about whether the AI buildout changes the growth algorithm for a business that was already compounding at a high-single-digit rate, or whether the law of large numbers and the physics of power grids eventually reassert themselves. The file turns on a single question: can interconnection — the recurring, high-margin revenue stream from the physical and virtual links between customers inside Equinix data centers — grow fast enough to offset the capital intensity of deploying AI-era capacity, or does the balance sheet eventually become the story?

The bull case is genuinely compelling: Equinix sits at the intersection of every major digital infrastructure trend, from AI inference at the edge to sovereign data requirements to the secular shift from on-premise to colocation. It has a 27-year head start in curating ecosystems, over 500,000 interconnections, and a customer list that includes 8 of the top 10 AI model providers. The bear case is equally real: $22.7 billion in debt, free cash flow that turned deeply negative in 2025 as capex surged past $4.3 billion, and a stock trading at roughly 29 times trailing EBITDA — a multiple that prices in a lot of things going right.