CHICAGO--(BUSINESS WIRE)--Grant Thornton LLP admitted 50 new partners and principals to the firm, effective Aug. 1. These partners and principals are based throughout the firm’s offices across the country. In addition, the firm has promoted 29 professionals to managing director. Partners and principals admitted to the firm are thought leaders upon whom Grant Thornton relies to help clients achieve smart, quality growth in all aspects of their businesses. Through unparalleled access and attentio