In the five weeks after Howmet Aerospace delivered its strongest quarter in three years, the stock gave back roughly a quarter of its value — from an intraday high of $310 in the week of the August 6 print to a close of $231.27 on October 2 . Nothing in the company's own disclosure explains the move. The numbers went up: that print raised full-year revenue guidance by $400 million and adjusted EPS by $0.33 at the baseline, to about $10.05 billion and $5.27 . What fell was the market's confidence that Howmet will still own its position five years out.
The company occupies a position in the engine supply chain that rarely gets priced explicitly. Howmet casts the parts that run hottest: investment castings, airfoils and seamless rolled rings for jet engines and industrial gas turbines, grouped in an Engine Products segment that was 54% of second-quarter revenue ($1,373M of $2,547M ). Around that core sit three smaller businesses — aerospace and industrial fasteners in Fastening Systems, titanium and aluminum forgings and machined airframe parts in Engineered Structures, and Alcoa-brand forged aluminum truck wheels in Forged Wheels. Aerospace was roughly 70% of 2025 revenue, with commercial transportation at 15% and gas turbines at 11% .
Two announcements by other companies did the damage. On August 29, Elon Musk confirmed that SpaceX has been building a foundry in Bastrop, Texas to cast turbine blades and vanes in-house, arguing that this is the limiting factor in bringing natural-gas turbines online and that doing it himself pulls delivery forward by up to 18 months . Ten days later, on September 8, GE Aerospace — a customer representing roughly 11% of Howmet's 2025 third-party sales — agreed to buy Consolidated Precision Products, a merchant castings maker, for $11.75 billion . Howmet's close fell from $259.27 to $229.61 over that second week, an 11.4% decline and the largest weekly drop of the past year . Long Treasury yields above 5% have compressed every long-duration industrial multiple this autumn, and some of Howmet's de-rating belongs there. But rates do not explain why the worst week of the year arrived with GE's press release.
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