US - Mark Williamson, chief executive of AIM Investments, part of investment manager Amvescap, has resigned.
A spokesperson for Amvescap said he understood Williamson “simply wanted to move on”.
According to a Financial News report, Williamson had been named as a potential replacement for Amvescap chief executive Charles Brady, who is stepping down from his post.
The spokesperson said Williamson would not leave the firm before Brady’s successor was announced.
Amvescap is in the midst of a search for Brady’s replacement and has previously announced it will appoint his successor by mid-year.
The search is being conducted by a board committee of non-executive directors in consultation with search firm Spencer Stuart, which is preparing a short list of candidates.
Amvescap said it would begin the search for AIM’s new chief executive after a replacement for Brady was found.
Williamson was previously chief executive of Amvescap unit Invesco Funds Group, which has since closed.
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