BlackRock's absolute return manager Mark Lyttleton is taking an extended break from the industry for family reasons.
He will leave the firm in June and is slated to return on 17 September, the group said.
Lyttleton is manager of the £1.1bn UK Absolute Alpha, £859m UK Dynamic funds.
Nick Osborne, co-manager of UK Absolute Alpha, will run the fund in Lyttleton’s absence.
Adam Avigdori will temporarily take on the role as sole manager of UK Dynamic.
Avigdori co-manages the UK Income fund with Nick McLeod-Clarke, and the Income and Growth investment trust.
BlackRock removed Lyttleton from its UK fund earlier this year, handing the £463m portfolio to co-manager Nick Little.
The change came after a period of underperformance for the fund, which was ranked 191st in the IMA UK All Companies sector over one year, and 264th over three years at the time of the handover.
The Dynamic fund has fallen 8.3% over the last year, and delivered 28.2% over the last three years, compared to the IMA UK All Companies sector average of 40.6%.
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