London-based Quilter, Old Mutual’s former wealth management business, said on Wednesday that stock market gains helped it grow assets under management 13% to £110.4bn during its year to end-December.

The group’s share price rose by a third in 2019, with CEO Paul Feeney saying it has had annual net client cash inflow of £300m for the year, excluding Quilter Life Insurance, reflecting a turnaround during the company’s fourth quarter...