29 C.F.R. § 2550.404b-1
(a) No fiduciary may maintain the indicia of ownership of any assets of a plan outside the jurisdiction of the district courts of the United States, unless:
(1) Such assets are:
(2)
(i) Such assets are under the management and control of a fiduciary which is a corporation or partnership organized under the laws of the United States or a State, which fiduciary has its principal place of business within the United States and which is—
(C) An investment adviser registered under the Investment Advisers Act of 1940 that has, as of the last day of its most recent fiscal year, total client assets under its management and control in excess $50,000,000 and either
(1) Shareholders' or partners' equity in excess of $750,000 or
(2) All of its obligations and liabilities assumed or guaranteed by a person described in paragraph (a)(2)(i)(A), (B), or (C)(1) or (a)(2)(ii)(A)(2) of this section; or
(ii) Such indicia of ownership are either
(A) In the physical possession of, or, as a result of normal business operations, are in transit to the physical possession of, a person which is organized under the laws of the United States or a State, which person has its principal place of business in the United States and which is—
(1) A bank as defined in section 202(a)(2) of the Investment Advisers Act of 1940 that has, as of the last day of its most recent fiscal year, equity capital in excess of $1,000,000;
(2) A broker or dealer registered under the Securities Exchange Act of 1934 that has, as of the last day of its most recent fiscal year, net worth in excess of $750,000; or
(3) A broker or dealer registered under the Securities Exchange Act of 1934 that has all of its obligations and liabilities assumed or guaranteed by a person described in paragraph (a)(2)(i)(A), (B), or (C)(1) or (a)(2)(ii)(A)(2) of this section; or
(B) Maintained by a broker or dealer, described in paragraph (a)(2)(ii)(A)(2) or (3) of this section, in the custody of an entity designated by the Securities and Exchange Commission as a “satisfactory control location” with respect to such broker or dealer pursuant to Rule 15c3-3 under the Securities Exchange Act of 1934, provided that:
(1) Such entity holds the indicia of ownership as agent for the broker or dealer, and
(2) Such broker or dealer is liable to the plan to the same extent it would be if it retained the physical possession of the indicia of ownership pursuant to paragraph (a)(2)(ii)(A) of this section.
(C) Maintained by a bank described in paragraph (a)(2)(ii)(A)(1), in the custody of an entity that is a foreign securities depository, foreign clearing agency which acts as a securities depository, or foreign bank, which entity is supervised or regulated by a government agency or regulatory authority in the foreign jurisdiction having authority over such depositories, clearing agencies or banks, provided that:
(1) The foreign entity holds the indicia of ownership as agent for the bank;
(2) The bank is liable to the plan to the same extent it would be if it retained the physical possession of the indicia of ownership within the United States;
(3) The indicia of ownership are not subject to any right, charge, security interest, lien or claim of any kind in favor of the foreign entity except for their safe custody or administration;
(4) Beneficial ownership of the assets represented by the indicia of ownership is freely transferable without the payment of money or value other than for safe custody or administration; and
(5) Upon request by the plan fiduciary who is responsible for the selection and retention of the bank, the bank identifies to such fiduciary the name, address and principal place of business of the foreign entity which acts as custodian for the plan pursuant to this paragraph (a)(2)(ii)(C), and the name and address of the governmental agency or other regulatory authority that supervises or regulates that foreign entity.
(c) For purposes of this regulation:
[42 FR 54124, Oct. 4, 1977, as amended at 46 FR 1267, Jan. 6, 1981]