Ruffer Investment Co Ltd is a closed-end investment company. Its principal objective is to achieve a positive total annual return. The company adopts a stock picking approach and invests across a broad range of assets, geographies and sectors including listed or quoted equities or equity related securities, options, and bonds which are issued by corporate issuers, supra-nationals or government organizations and investment in funds. It uses derivatives, including futures, options, swap agreements, structured products, warrants and forward currency contracts, for efficient portfolio management. The major part of the company's revenue comes from investment income such as dividend and interest.