Global government bond prices have been subject to wild swings over the past six months. They performed poorly from April to mid-June as investors focused on the threat of inflation, but recovered much of the lost ground through to September as recession fears came to the fore once more. Corporate bonds have generally performed poorly in 2008, with risk aversion in the forefront of investors' minds.Corporate bonds remain affected by concerns relating to US subprime mortgages and the ability of banks to lend to each other The corporate bond market was particularly poor in September - the worst one-month performance on record. The yield spread between corporate and government bonds (the premium payable by corporate bond issuers to reflect higher risk) has continued to widen.