Investment

(a) The funds and assets of a common trust fund may be invested and reinvested in those investments in which a fiduciary may invest funds or assets held in a fiduciary capacity under section 36a-350, provided, in determining whether the investment of funds received or held by the fiduciary in a common trust fund is proper, the fiduciary may consider the common trust fund as a whole and is not prohibited from making such investment because of any particular asset. (b) Except as otherwise expressly provided in the instrument, judgment, decree or order creating the fiduciary relationship with the fiduciary or in the instrument creating the common trust fund, no investment for a common trust fund shall be made in stocks or bonds or other obligations of any one person, firm or corporation which would cause the total amount of investment in stocks or bonds or other obligations issued or guaranteed by such person, firm or corporation to exceed ten per cent of the value of the common trust fund, provided this limitation does not apply to investments in obligations of the United States or in obligations for the payment of the principal and interest of which the faith and credit of the United States is pledged.