ATI vs CLF: How ATI Inc. and Cleveland-Cliffs Compare (2026)

Same yardstick, side by side (as of July 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: CLF is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. ATI and CLF share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined ATI and CLF exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

ATI Inc. (ATI), formerly Allegheny Technologies, is a specialty materials and components producer focused on high-performance metals for demanding applications. Its core markets are aerospace and defense, where ATI supplies titanium, nickel-based superalloys, and other advanced alloys used in jet engines, airframes, and defense systems that must withstand extreme heat, stress, and corrosion. The company also serves medical, energy, electronics, and specialty industrial markets. ATI operates through two segments: High Performance Materials and Components (jet engine parts, forgings, and advanced alloys) and Advanced Alloys and Solutions (specialty rolled products and materials). The company has deliberately repositioned over the past several years away from lower-margin commodity stainless toward higher-value, harder-to-make aerospace and defense materials where it has technical differentiation and long qualification cycles that lock in customer relationships. Founded through the combination of specialty metals businesses and headquartered in Dallas, Texas, ATI is a cyclical industrial materials company whose results are tied closely to commercial aerospace production rates and defense spending.

Full ATI guide

Cleveland-Cliffs is North America's largest flat-rolled steel producer and the largest supplier of automotive-grade steel in the United States. It is vertically integrated, owning iron ore mines and pellet operations and converting raw materials and scrap through primary steelmaking into downstream finishing, stamping, tooling, and tubing. It makes money by selling steel to automakers, service centers, infrastructure, appliance, and other industrial customers; roughly a third of output goes to the automotive sector, and Q1 2026 steelmaking revenue included ~$1.4 billion (~29%) of direct automotive sales. The company employs roughly ~25,000 people across mining, steel, and manufacturing operations in the U.S. and Canada.

Full CLF guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• ATI drivers: Commercial aerospace recovery and ramp; Mix shift to high-value materials.
• CLF drivers: U.S.-only footprint plus tariff tailwind; Integration and scale.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: ATI is cyclical and concentrated in aerospace, so any slowdown in commercial aircraft production (for example, Boeing supply-chain or quality problems, or an air-travel downturn) hits demand directly. For CLF, cleveland-Cliffs is one of the more cyclical and leveraged names in the steel sector.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick ATI if you believe its drivers more; CLF if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the ATI and CLF guides.

ATI. ATI trades as a cyclical aerospace and defense materials supplier, with its multiple expanding when commercial aircraft build rates and defense demand are strong. The repositioning toward higher-value alloys has improved margins and earnings quality, but the valuation still reflects sensitivity to the aerospace cycle and raw-material and capacity-ramp risks rather than steady-state stability.

CLF. Cliffs is a deeply cyclical steelmaker, so trailing earnings and EBITDA reflect a trough rather than a steady run rate, and a simple P/E is not meaningful when the company is posting losses. Investors typically watch EV/EBITDA, leverage (net debt to EBITDA, recently elevated near or above 3x), and the path to positive free cash flow that management guided toward from Q2 2026. Figures are approximate, tied to the asOf date, and move with the steel cycle.

Headline figures (approximate, early 2026): ATI shows revenue (ttm) ~$4.5 billion, operating margin ~low-double-digit percent (improving with mix), net income (ttm) ~$350-450 million, p/e (ttm) ~20-25x (cyclical); CLF shows revenue (ttm, approx.) ~$18-19 billion, q1 2026 revenue ~$4.9 billion, q1 2026 adjusted ebitda ~$95 million (incl. ~$80M one-time energy cost), q1 2026 gaap net loss ~$229 million (~$0.42 per diluted share).

ATI and CLF are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined ATI and CLF exposure against your real portfolio. It is not an investment adviser.