At any one time, at least 80% of the portfolio will be comprised of global equity securities. The portfolio may invest in global and local equity securities, government, corporate and inflation-linked bonds, debentures, non-equity securities, convertible debt instruments, preference shares, money market instruments and assets in liquid form. The manager may make use of listed and unlisted financial instruments to reduce the risk that a general decline in the value of the equity securities may have on the portfolio. The manager shall have the maximum flexibility to vary between markets and counties to reflect changing economic and market conditions. Nothing in this supplemental deed shall preclude the manager from varying the ratio of securities or assets in liquid form in changing economic environment or market conditions, or to meet the requirements in terms of legislation and from retaining cash or placing cash on deposit in terms of the deed and this supplemental deed. The Manager will be permitted to invest on behalf of the portfolio in offshore investments as legislation permits. The Trustee shall ensure the investment policy set out in this supplemental deed is carried out. For the purpose of this portfolio, the Manager shall reserve the right to close the Portfolio to new investors on a date determined by the Manager. This will be done in order to be able to manage the portfolio in accordance with its mandate. The Manager may, once a portfolio has been closed, open that portfolio again to new investors on a date determined by the Manager.