The Derivative Security List message is used as a response to a Derivative Security List Request <35=z>, and includes a list of securities that matches the criteria specified.

This message is used to send a predefined list of securities - usually options - based on a common underlying and option class. It can also be used to send the rules for security creation - again, usually options - which imply the existence of a set of securities.

Other uses of this message may include:

• Convey comprehensive set of option classes for all market segments in which these option classes participates in
• Convey the option classes' trading rules that differ from the default trading rules for the market segment