Brown & Sons where it aimed to provide investment guidance to high-net-worth individuals and focused on financing growth companies.

[3][4][5][7] In July 2007, Brown Advisory acquired Beaty Haynes & Associates, a $1.1 billion investment manager based in Bethesda.

[4] On March 25, 2008, Brown Advisory expanded outside the US where it opened an office in London as the base for its European operation.

It would initially a US large cap value portfolio to UK clients through a UCITS vehicle based in Dublin.

[5][9] In September 2016, Brown Advisory acquired Blackhaw Wealth Management, a small investment company in Austin, Texas.

[13] In May 2023, Governor of Maryland, Wes Moore put $2.5 million worth of investments in a blind trust which was reported to be managed by Brown Advisory.