Highmount Capital LLC, a wealth management firm based in New York City and Boston with more than $2.3 billion in assets under management, has made five advisors principals and part owners, Highmount announced Wednesday.

The new principals are Gautam Chhada, Susan Milona, Stephanie Power, Kristen Siciliano and David Thompson. Each has held other positions with Highmount since 2008 or earlier.