Nigel Wightman, the former UK managing director at State Street Global Advisors, has completed his first acquisitions at the vehicle he set up earlier this year to buy and integrate boutique asset managers.

Titanium Asset Management, which Wightman listed on London's alternative investment market in June, has snapped up three US fund managers in deals potentially worth about $40m (€30m) combined, and now has total assets under management of $3.3bn.