About Graybook Ventures | The Graybook Group's VC Arm

What we believe as investors.

Operators first

We judge products the way our own traders and engineers would: does it work at the open, and can you prove it?

Help that shows up

Platform access, servers and an audience of traders are worth more than a board seat. We lead with what we can actually do.

Better markets, not just bigger ones

We back technology that makes trading fairer, safer and easier to understand, and pass on what only adds noise.

Today, the Graybook group is made up of three companies alongside Ventures:

GRAYBOOKPROPRIETARY TRADING

Funded trading accounts across indices, FX, energy and stocks, with Vig, our AI quant, built into the platform. The traders our portfolio companies build for.

Visit Graybook Proprietary Trading →

GRAYBOOKTECHNOLOGIES

Trading systems on open-source engines, Quant VPS servers near the exchanges and HFT colocation beside the matching engine. The infrastructure our portfolio companies run on.

Visit Graybook Technologies →

GRAYBOOKHOLDINGS

[The parent company of the Graybook group, which owns the operating companies and Graybook Ventures and sets the group’s long-term direction.]