London money manager Christopher Hohn's charitable foundation is changing the way it invests in Hohn's hedge fund, a sign of investor demand for tailored accounts as a way to limit risk following steep losses.

The Children's Investment Fund Foundation is a charitable organisation set up by Hohn and run by his wife, Jamie Cooper-Hohn. The foundation is an investor in the Children's Investment Fund Management LLP, or TCI, the hedge-fund firm established by Hohn in 2003.