> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://biasinvestors.crisp.help/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Sell Out

The action taken by a broker-dealer when a customer fails to pay for securities by the required date, or when a margin maintenance call is not met.