17 C.F.R. § 240.12f-5 Exchange rules for securities to which unlisted trading privileges are extended.
Title 17 - Commodity and Securities Exchanges
A national securities exchange shall not extend unlisted trading privileges to any security unless the national securities exchange has in effect a rule or rules providing for transactions in the class or type of security to which the exchange extends unlisted trading privileges. [60 FR 20896, Apr. 28, 1995]
Title 17: Commodity and Securities Exchanges
PART 240—GENERAL RULES AND REGULATIONS, SECURITIES EXCHANGE ACT OF 1934
Unlisted Trading
§ 240.12f-5 Exchange rules for securities to which unlisted trading privileges are extended.