SPR vs AMG Comparison

Spirit AeroSystems manufactures aerostructures, particularly fuselages, cockpits, wing sections, engine pylons, and nacelles for commercial and military aircraft. The company was spun out of Boeing in 2005 to become the largest independent supplier of aerostructures for commercial aircraft. Boeing and Airbus are the firm's primary customers—Boeing represented roughly 60% and Airbus roughly 20% of revenue in recent years. The company is highly exposed to Boeing's beleaguered 737 program, which accounts for nearly half the company's revenue. The company plans to be acquired by and reintegrated into Boeing in mid-2025.

Affiliated Managers Group offers investment strategies to investors through its network of affiliates. The firm typically buys a majority interest in small to midsize boutique asset managers, receiving a fixed percentage of revenue from these firms in return. Affiliates operate independently, with AMG providing strategic, operational, and technology support, as well as global distribution. At the end of September 2024, AMG's affiliate network-which includes firms like AQR Capital Management, and Pantheon in alternative assets and other products (which accounted for 36% of AUM), Artemis, Genesis, Harding Loevner, and Tweedy Browne in global and emerging-market equities (27%) and Frontier, River Road, Parnassus, and Yacktman in US equities (21%)-had $728.4 billion in managed assets.