The investable universe of the portfolio includes interest bearing securities as well preference shares, equity securities, property securities, convertible equities, derivatives and non-equity securities and assets in liquid form. The portfolio may from time to time invest in listed and unlisted financial instruments in order to achieve the portfolio's investment objective. The manager may also include forward currency, interest rate and exchange rate swap transactions for effecient portfolio management purposes. The manager may also invest in participatory interests or any other form of participation in portfolios of collective investment schemes or other similar collective investment schemes as the Act may allow from time to time, and which are consistent with the portfolios investment policy. The trustee shall ensure that the investment policy is adhered to, provided that nothing contained in the investment polcy shall preclude the manager from varying the proportions of the aforementioned securities and assets in liquid form, or the assets themselves, should changing economic factors or market conditions so demand.