National securities exchange
National securities exchange means a securities exchange that is registered as a national securities exchange by the Securities and Exchange Commission pursuant to section 6 of the Securities Exchange Act of 1934 (15 U.S.C. 78f) and the National Market System, i.e., the top tier of the National Association of Securities Dealers Automated Quotation System.
12 CFR § 362.2
For the purposes of this subpart, the following definitions will apply: