The acquisition will see JTC – a fund, corporate and private client service provider – increase its global headcount to over 450 staff and increase its assets under administration to $56bn (£35.6bn, €48.3bn).
It will also enhance the company’s private equity, real estate and fixed income offering.
News emerged that JTC was buying wealth manager Kleinwort Benson’s fund administration arm in July.
“While this is the largest acquisition JTC has undertaken to date, our focus now is to provide a seamless experience for clients and staff and delivering first-class service will be the top priority throughout the integration process,” said group chief executive, Nigel Le Quesne.
“The conclusion of this acquisition marks another step in our journey as we strengthen our position as a leading global provider of fund services.”