The company saw the number of assets under management rise by €40.8bn (£30.7bn, $46.1bn) throughout 2014, reaching €246bn in total.
The business attracted interest throughout markets in the US, Europe and Asia, splitting 50/50 across both retail and institutional clients.
In September last year the asset manager announced it was launching a strategy to expand its operations in Japan, hoping to gain €5bn in the region by 2019.
It also plans to open an office in Singapore where it will focus on sovereign wealth funds.
Robeco’s profits almost doubled to €228m compared to 2013, while strong positive cash flows were said to have driven the positive investment of €35.1bn, making it “a year of records” for the firm.
The good performance of funds also meant clients received more attractive returns.
Robeco said performance fees were an important factor influencing the business’s increase in income, which was a direct result of strong investment returns from performance fee-related products.
Management fees were also said to be a factor contributing to the firm’s “solid growth”.
The firm has a range of offerings, from equity markets to government bonds, which are all actively managed.
