emergency
(7) Definition For purposes of this subsection, the term “emergency” means— (A) a major market disturbance characterized by or constituting— (i) sudden and excessive fluctuations of securities prices generally, or a substantial threat thereof, that threaten fair and orderly markets; or (ii) a substantial disruption of the safe or efficient operation of the national system for clearance and settlement of transactions in securities, or a substantial threat thereof; or (B) a major disturbance that substantially disrupts, or threatens to substantially disrupt— (i) the functioning of securities markets, investment companies, or any other significant portion or segment of the securities markets; or (ii) the transmission or processing of securities transactions.