Since the mid- 1980s, Riordan, Lewis & Haden has focused on investing in various companies such as Tetra Tech, Adohr Farms, Data Processing Resources, Silverado Senior Living, ITS, maxIT Healthcare, and Secure Mission Solutions.
Since the mid- 1980s, Riordan, Lewis & Haden has focused on investing in high-growth, profitable companies with revenues of between $25 and $200 million. Examples of the firm's portfolio companies include Tetra Tech, Adohr Farms, Data Processing Resources, Silverado Senior Living, ITS, maxIT Healthcare, and Secure Mission Solutions.