Vernon Hills, Illinois-based CDW Corporation (CDW) provides information technology (IT) solutions in the United States, the United Kingdom, and Canada. With a market cap of $21.5 billion, CDW operates through Corporate, Small Business, and Public segments. Companies worth$10 billion or more are generally described as "large-cap stocks." CDW fits right into that category, with its market cap exceeding this threshold, reflecting its substantial size and influence in the information technology services indu ...