DG vs DGX Comparison

Since its beginning in 1939, Dollar General has grown to become the largest dollar store operator in the United States, with more than 20,000 small-box discount stores across 48 states. The firm generated over $42 billion in fiscal 2025 sales. The retailer maintains a heavy concentration of stores in rural and low-income markets underserved by big-box retailers. It's 11,000 stock-keeping units, including 2,000 priced at $1 or less, span consumables (82% of sales), seasonal items (10%), home products (5%), and apparel (3%). More than 20% of sales are derived from private label.

Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the US. The company generates over 97% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,400 patient service centers, as well as multiple doctors offices and hospitals. The firm also runs a much smaller diagnostic solutions segment that provides clinical trials testing, risk-assessment services, and information technology solutions.