AMAT vs AMD: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of September 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: AMAT 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. AMAT and AMD 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 AMAT and AMD 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.

Applied Materials is the largest semiconductor equipment company in the world by revenue. The company manufactures the wafer fabrication equipment that semiconductor fabs use to deposit, etch, polish, and inspect silicon wafers. AMAT does not make lithography systems (ASML has that monopoly) but is essentially everywhere else in the fab equipment market.

Full AMAT guide

Advanced Micro Devices (AMD) designs CPUs, GPUs, and adaptive computing chips. The company has two main client-facing CPU lines: Ryzen for consumer PCs and EPYC for data center servers. EPYC has gained significant share against Intel Xeon in cloud and enterprise data centers over the past five years. The Instinct GPU line (MI300X, MI325X, MI350, MI400) is AMD's AI accelerator platform and the primary direct competitor to NVIDIA's data center GPUs.

Full AMD guide

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

• AMAT drivers: Leading-edge logic and memory capex; Trailing-edge capacity expansion.
• AMD drivers: Instinct AI GPU ramp; EPYC server share gains.

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: Semiconductor capex is cyclical. For AMD, nVIDIA's structural advantages in AI (CUDA ecosystem, manufacturing capacity allocations from TSMC, customer relationships) make AI GPU share gains harder than the hardware comparison alone suggests.

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 AMAT if you believe its drivers more; AMD 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 AMAT and AMD guides.

AMAT. AMAT trades at a more modest multiple than fabless designers or NVIDIA, reflecting the cyclical nature of equipment spending. The premium versus the S&P 500 average comes from the structural growth in semiconductor capex and the service revenue durability.

AMD. AMD trades at a premium P/E reflecting the AI accelerator growth story and EPYC share gains. The valuation depends on continued execution against NVIDIA in AI; multiple compresses quickly if Instinct share gains stall.

Headline figures (approximate, early 2026): AMAT shows revenue (ttm) ~$28 billion, operating margin ~30%, net income (ttm) ~$8 billion, eps (ttm) ~$9.50; AMD shows revenue (ttm) ~$30 billion, operating margin ~25% (improving as data center mix grows), net income (ttm) ~$4 billion (GAAP; higher non-GAAP), eps (ttm) ~$2.50.

AMAT and AMD 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 AMAT and AMD exposure against your real portfolio. It is not an investment adviser.