Paine Schwartz Partners | 8,702 followers on LinkedIn. Sustainable Food Chain Investing | Paine Schwartz Partners is the largest private equity firm dedicated to sustainable food chain investing, with ~$6 billion of AUM and over 20 years of experience. The firm invests across specific segments of the food and agribusiness value chain, with a focus on two core investment themes: productivity and sustainability and health and wellness. Through its proactive, thesis-driven approach, the firm targets value-added and differentiated companies and makes primarily control buyout investments, with a smaller allocation to growth companies.