Contact

Business details

BlackSwan Archive is operated by Q-Star Trading (ABN 27 149 616 218), Australia. We provide subscription access to scenario-driven portfolio stress-testing and defensive strategy research software.

Customer support

Email support@9cstar.com for account, billing, cancellation, refund, privacy or technical support. Include the email address on your account, but never send passwords, API keys or full card details.

We normally acknowledge billing and refund requests within two business days.