A bona fide hedge transaction effected on a national securities exchange by a member for its own account or an account of an associated person thereof and involving a long or short position in a security entitling the holder to acquire or sell an equity security, and a long or short position in one or more other securities entitling the holder to acquire or sell such equity security, shall be deemed to be of a kind which is consistent with the purposes of section 11(a)(1) of the Act, the protection of investors, and the maintenance of fair and orderly markets.