The core principles underpinning multi-asset, multi-manager investing (MAMMI) go back thousands of years. The Jewish Talmud advises readers to divide their money in three parts, and to invest one-third in land, one-third in business, and to keep the remainder in cash. Similarly, the Christian Bible recognises the importance of portfolio diversification: “But divide your investments amongst many places, for you do not know what risks might lie ahead” (Ecclesiastes 11:2). In Islam, the Quran urges followers to diversify ...