The Commission, by such rules and regulations or order as it deems necessary or appropriate in the public interest or for the protection of investors, may authorize the filing of any information or documents required to be filed with the Commission under this subchapter, subchapter II of this chapter, the Securities Act of 1933 [
15 U.S.C.
77a et seq.], the Securities Exchange Act of 1934 [
15 U.S.C.
78a et seq.], the Public Utility Holding Company Act of 1935, or the Trust Indenture Act of 1939 [
15 U.S.C.
77aaa et seq.], by incorporating by reference any information or documents theretofore or concurrently filed with the Commission under this subchapter or any of such Acts.