It shall be unlawful for any affiliated person of or principal underwriter for a registered investment company (other than a company of the character described in section
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(d)(3) (A) and (B) of this title), or any affiliated person of such a person or principal underwriter, acting as principal to effect any transaction in which such registered company, or a company controlled by such registered company, is a joint or a joint and several participant with such person, principal underwriter, or affiliated person, in contravention of such rules and regulations as the Commission may prescribe for the purpose of limiting or preventing participation by such registered or controlled company on a basis different from or less advantageous than that of such other participant. Nothing contained in this subsection shall be deemed to preclude any affiliated person from acting as manager of any underwriting syndicate or other group in which such registered or controlled company is a participant and receiving compensation therefor.