Acumen, a US-based non-profit impact investment fund, focuses on investing in social enterprises that serve low-income individuals. The firm primarily targets sectors such as clean energy, healthcare, and agriculture. Acumen typically engages in various investment rounds, including Seed, Series A, Series B, and grants, with investments ranging from small philanthropic capital to larger funding rounds.

Notable portfolio companies include BioLite, Boulder Care, Climb Credit, and D.Light Design. Founded by Jacqueline Novogratz in 2001, Acumen's investment philosophy centers on demonstrating that combining philanthropic capital with business acumen can create thriving enterprises that significantly impact the poor. The firm offers unique value-add services to its portfolio companies, leveraging its extensive network and expertise to drive social change and sustainable growth.