BlackRock ( BLK) shares rose 4% Wednesday morning as the asset manager posted better-than-expected quarterly results on record assets under management (AUM).

BlackRock said in its fourth-quarter earnings report Wednesday that assets under management jumped to a record $11.55 trillion, up from $10 trillion a year ago. Analysts surveyed by FactSet had expected BlackRock to report a record $11.

BlackRock’s profits rose and assets under management edged up to a record $11.55 trillion in the fourth quarter. BlackRock posted net income of $1.67 billion, up 21% from the same period a year earlier.