The Core 4 Income and Core 6 Income funds will be unveiled on 10 May, to add to the Core 3 Income and Core 5 Income funds launched in September last year, the firm said in a statement.

The new portfolios will invest in a broad range of active and passive components, and will be managed by the multi-asset team, headed by Bill McQuaker.

The firm estimates The Core 4 Income will have an initial yield of 4.3 per cent at launch, while the Core 6 Income fund is expected to have a yield of 3.5 per cent.

Henderson Global Investors had £65.7 billion ($101.6 billion) in assets under management at 31 December 2012.