Hexcel and Rocket Lab USA are being compared as potential buys in the aerospace sector in 2026. Hexcel has reportedly beaten earnings estimates in the first quarter of 2026, while Rocket Lab has surged and is considered a top performer in the industry. However, it is unclear which stock is considered the better buy, as comparisons are also being made between Hexcel and other companies, including Loar, Textron, and others in the aerospace sector.