(a) The fiduciary duties of the Board as set forth at 5 U.S.C. 8472 may not be allocated to any person other than a member or members of the Board.

(b) The Executive Director may allocate authority and responsibility for the investment and management of the Fixed Income Investment Fund to a qualified professional asset manager(s).

(c) The Executive Director may allocate authority and responsibility for the investment and management of the Government Securities Investment Fund, the Common Stock Index Investment Fund, the International Stock Index Investment Fund and the Small Capitalization Stock Index Investment Fund to an investment manager(s).

(d) Notwithstanding any other provision of this part, no allocation may be made which would constitute:

(e) Except as provided in this part, no person who has or may acquire fiduciary responsibility in connection with the Thrift Savings Fund may allocate such responsibility to another person.