17 CFR §240.11a1-4(T)

A transaction in a bond, note, debenture, or other form of indebtedness effected on a national securities exchange by a member for its own account or the account of an associated person thereof 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.