William Blair is a global boutique with expertise in investment banking, investment management, and private wealth management. It is headquartered in Chicago, with offices in more than 30 cities worldwide. The firm helps corporations, financial sponsors, and owner/entrepreneurs around the world achieve their growth, liquidity, and financing objectives. From January 2021 through December 2025, the firm’s investment banking group advised on more than $850 billion in completed transactions. Today, its research group covers approximately 690 companies and its investment management unit manages more than $65 billion in client assets.

William Blair is consistently rated as a top place to work in the financial services industry. In 2024, among its many honors, it was named a Top Workplace by the Chicago Tribune and by USA Today. In addition, its deals have been recognized at Mergers & Acquisitions’ annual Middle Market Deal of the Year Awards, and it has earned a perfect score on the Corporate Equality Index, which rates corporate policies and practices related to LGBTQ+ workplace equality. In 2026, William Blair entered into an agreement to acquire Inner Circle Sports, a boutique investment bank focused on the sports, media, and entertainment industry. Some of Inner Circles deals have included professional sports teams such as the Cleveland Browns, San Francisco Forty-Niners, Sacramento Kings, Minnesota Timberwolves, Austin FC, Columbus Crew, New Jersey Devils, and New York Islanders.