Legal notice

Version of 19 October 2026. This is a translation of the French text, which prevails.

Publisher

Drill and Deal is published by Antoine Routaboul, entrepreneur individuel (EI), 3 boulevard Bernard Hirsch, 95000 Cergy, France.

Email: [email protected]
Phone: +33 7 72 44 55 09

Publishing director: Antoine Routaboul.

Hosting

Website: Cloudflare, Inc., 101 Townsend St, San Francisco, CA 94107, United States, phone +1 650 319 8930.
Accounts and Premium access: Supabase, Inc., on servers located in Paris.
Payments: Stripe. Subscriptions are sold through Link (Sold through Link, LLC, a Stripe company), acting as reseller.

Intellectual property

The texts, lectures, problem sets, diagrams, tools and logo of Drill and Deal belong to the publisher. Any reproduction, even partial, needs written permission, except a short quotation that names the source.

The photos come from Wikimedia Commons. Their author and licence are shown under each one. The globe’s base map comes from Natural Earth, which is in the public domain. The Hanken Grotesk and Newsreader fonts are published under the SIL Open Font Licence.

Disclaimer

Drill and Deal is a learning site. Figures are rounded and models simplified. Nothing on this site is investment advice or a recommendation to buy or sell a security. News items summarise public sources, cited with each item.

Contact

For any question, write to [email protected].