Advent International Corporation specializes in making direct investments. It makes private equity / buyouts and venture capital investments in seed/startup, early venture, emerging growth, turnaround, middle market, mature, mid venture, late venture, and later stage companies and is involved in growth capital, buyout, industry consolidation, and recapitalization transactions. It invests in integrated oil and gas, oil and gas exploration and production, oil and gas refining and marketing, specialty chemicals, construction materials, metals and mining, coal, aerospace and defense