Founded in 1999, QuinStreet, Inc. operates a network of proprietary media properties and decentralized online marketplaces, including sites like CarInsurance.com, CardRatings.com, and Insure.com. The company's business is structured around high-value, information-intensive verticals, predominantly financial services (such as auto insurance, personal loans, and credit cards) and home services. QuinStreet leverages its media management technology platform and matching algorithms to segment and qualify visitors, allowing client brands to target prospects. By operating on a cost-per-action or cost-per-click model, the company generates revenue when consumer interactions convert into measurable leads or sales. The firm expanded its home services footprint with the acquisition of HomeBuddy in early 2026.