[atemerev]

Most of the world's trading is now going through three physical unremarkable buildings: Equinix datacenters NY4, LD4 and TY3 in NYC, London and Tokyo respectively.

Inside, there is a mess of server racks installed by major banks and financial companies and everybody else (it's not that expensive, by corporate standards, to rent a rack place there), all interconnected by a web of optical fiber. Chaos reigns.

These are the places where billions per second change hands.

[sniperinmahwah]

I know. I visited the Basildon NYSE facility. That said, it's half empty (I mean, the colocation halls are half empty).