17 CFR §240.12a-7

1. (a)Any component stock of a standardized market basket shall be exempt from the registration requirement of section 12(a) of the Act, solely for the purpose of inclusion in a standardized market basket, provided that all of the following terms and conditions are met:
   1. (1)The standardized market basket has been duly approved by the Commission for listing on a national securities exchange pursuant to the requirements of section 19(b) of the Act; and
   2. (2)The stock is an NMS stock as defined in § 242.600 of this chapter and is either:
      1. (i)Listed and registered for trading on a national securities exchange by the issuer or
      2. (ii)Quoted on the National Association of Securities Dealers Automated Quotation System;
2. (b)When used in this rule, the term standardized market basket means a group of at least 100 stocks purchased or sold in a single execution and at a single trading location with physical delivery and transfer of ownership of each component stock resulting from such execution.