Assets held by the retirement plan for the benefit of the participants. Plan assets are to be segregated from the employer's property and held in trust be a trustee or investment manager who has the fiduciary duties of (1) composing the portfolio with regard to diversification, (2) structuring the assets so that the liquidity and current return of the portfolio are relative to the anticipated cash flow requirements of the plan, and (3) managing the assets so that the projected return of the portfolio is relative to the funding objectives of the plan.