Zweig-DiMenna Associates, Inc. is an employee owned investment manager. The firm primarily provides its services to pooled investment vehicles. It manages separate client focused equity portfolios. The firm launches and manages hedge funds for its clients. It invests in the public equity markets across the globe. The firm employs long and short equity strategy to create its portfolios. It employs fundamental analysis to make its portfolio. The firm obtains external research to complement its in-house research.

Zweig-DiMenna Associates, Inc. was founded in 1983 and is based in New York City.