04Contact

Write to us.

General

contact@cardinalq.com

Research collaborations, exchange and data relationships, press, and anyone who wants to understand how the firm works.

Careers

careers@cardinalq.com

Put the role in the subject line and attach whatever shows how you think. No cover letter. The open roles are on the Careers page.

Where

One office.

Cardinal Quantitative Research
Washington, DC

38°54′N  77°02′W

The desk is staffed 07:00 to 17:00 ET. The market's hours are on the Trading page.

Before you write

What we can and can't help with.

We answer

  • Researchers with a result worth arguing about.
  • Exchanges and data providers.
  • Journalists writing about market structure.
  • Students who want to know how this works.

We don't

  • Take outside capital, so there is nothing to invest in.
  • Buy signals, software, or data over email.
  • Comment on positions, ever.
  • Sell anything, so there is nothing to demo.