Howmet Aerospace makes the metal parts that go inside jet engines and hold aircraft together. Its four businesses are Engine Products (castings and rings for jet engines), Fastening Systems (the bolts and rivets that keep planes structurally sound), Engineered Structures (titanium forgings and machined parts for airframes and landing gear), and Forged Wheels (lightweight aluminum wheels for heavy trucks and buses sold under the Alcoa Wheels brand). About 70% of revenue comes from aerospace, with commercial and defense aviation customers paying for highly engineered parts made from nickel superalloys, titanium, cobalt, and aluminum. Customers like RTX Corporation and GE Aerospace each represented roughly 11% of sales in 2025. Howmet does not sell simple commodity parts. It sells components that must perform in extreme heat and stress, which makes switching suppliers difficult and expensive for aircraft makers. The diagram below traces where the money goes.

Five years of financial data tell a clear story of acceleration. Revenue has grown every single year, from $5.0 billion in 2021 to $8.3 billion in 2025. That is not modest growth. It is a 66% increase over four years, driven almost entirely by the recovery in commercial aviation after the pandemic grounded fleets worldwide. But the revenue growth is only part of the story. The cash the business actually generates has grown even faster.

Free cash flow, the money left over after paying for factories and equipment, went from $0.2 billion in 2021 to $1.4 billion in 2025. That is a sevenfold increase in four years. Operating cash flow followed the same path, rising from $0.4 billion to $1.9 billion over the same period. Howmet has used that cash to pay down debt steadily. Net debt dropped from $3.5 billion in 2021 to $2.5 billion in 2025, even as the company spent money on share repurchases and capacity expansions.

Inside the business, Engine Products is the dominant engine of profit. Its sales reached $4.3 billion in 2025, and its adjusted profit margin expanded from 27.2% in 2023 to 33.3% in 2025. Fastening Systems also improved sharply, with its margin rising from 20.6% in 2023 to 30.4% in 2025. Engineered Structures nearly doubled its margin over the same two years. The one weak spot is Forged Wheels. Truck demand has been falling, and that segment's sales declined from $1.1 billion in 2023 to $1.0 billion in 2025. Management expects commercial transportation to stay weak into the first half of 2026.

The overall profit improvement shows up clearly at the company level too. Net income rose from an undisclosed 2021 base to $1.508 billion in 2025, with income before income taxes jumping 33% in a single year from 2024 to 2025. Cost of goods sold as a percentage of sales fell from 71.9% in 2023 to 65.8% in 2025, which means Howmet is keeping more of each dollar it earns. That improvement came from higher volumes, better pricing power, and productivity gains across its factories.

Now for the risks. Howmet has several documented threats that could interrupt this trajectory. The most immediate is customer concentration. Boeing is a major customer, and Boeing had serious problems in 2024 and early 2025. A labor strike at Boeing reduced aircraft production. Quality issues delayed the 737 MAX production rate increase until October 2025. When Boeing slows down, Howmet feels it directly. This is not a theoretical risk. It already caused measurable harm to Howmet's results.

Raw materials are a second documented threat. Howmet needs titanium sponge, nickel alloys, cobalt, and ceramics to make its parts. Some of these come from a single supplier. If that supplier cannot deliver, Howmet either cannot meet customer orders or must pay much more for alternatives. The company also cannot always pass higher raw material costs to customers because contract terms and competitive pressure sometimes block price increases. When input costs rise faster than selling prices, profit margins shrink.

Trade policy adds another layer of uncertainty. New U.S. tariffs were announced in 2025 and early 2026. Other countries responded with their own measures. Howmet operates in 19 countries and ships products across borders constantly. Higher tariffs raise costs on both raw materials coming in and finished goods going out. The company has stated it cannot guarantee it will successfully absorb or recover these tariff impacts.

Finally, the CAM acquisition itself carries risk. If regulators block the deal, if financing cannot be arranged on acceptable terms, or if combining two manufacturing operations proves harder than expected, Howmet's financial condition and operations could be materially damaged. The company has $742 million in cash on hand as of year-end 2025. The $1.8 billion purchase price is more than double that amount, meaning external financing will be required.