Helena Morrissey will end her tenure as chair of the Investment Association next summer.
A spokesperson from the IA confirmed that Morrissey was leaving the role and a new chair would be decided “in due course”.
Morrissey, who also stepped down as chief executive of Newton Investment Management in August, had joined the organisation in 2014.
In a statement following her departure from Newton, Morrissey said that she was looking forward to continuing her role at the trade body.
Morrissey is on the UK’s Financial Services Trade and Investment Board. She founded the 30% Club in 2010 and was appointed a CBE in 2012.
She was a vocal supporter of Brexit, in contrast to many asset managers who believed a vote to leave the EU would be bad for the industry.