<prompt> Translate the following text to EnglishKama ilivyoelezwa katika Mafunzo ya Mwisho ya Fomu ya Usajili, kampuni ya uhasibu ya usimamizi wa wazi ya 2,700 imesajiliwa na kampuni ya usimamizi wa usimamizi wa wazi ya 620.  <response>: The Final Analysis for the Registration Form rule notes that of the approximately 2,700 registered open-end management investment companies, approximately 620 or 