MU vs SKHY: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 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: SKHY 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. MU and SKHY 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 MU and SKHY 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.

Micron Technology is the third-largest memory semiconductor company in the world, after Samsung and SK Hynix. The company manufactures two main types of memory: DRAM (dynamic random-access memory used in computers, servers, and AI accelerators) and NAND (flash memory for storage). Micron is the only US-headquartered memory semiconductor manufacturer at scale, which has made it a strategic asset for US chip policy.

Full MU guide

SK hynix is a South Korea-based semiconductor company that designs and manufactures memory chips, primarily DRAM (including high-bandwidth memory, or HBM) and NAND flash storage. Its products sit inside data-center servers, AI accelerators, smartphones, and PCs. The company is the number-one supplier of HBM, the stacked DRAM that pairs with Nvidia and other GPUs to power AI training and inference, holding roughly 57 to 62 percent of the HBM market, and it ranks number two globally in both DRAM (~29 percent) and NAND (~18 percent). It listed American depositary shares on the Nasdaq under the ticker SKHY in July 2026 (trading briefly as SKHYV on a when-issued basis first).

Full SKHY guide

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

• MU drivers: HBM as the AI-driven growth driver; Data center DRAM strength.
• SKHY drivers: HBM leadership into the AI buildout; Record profitability and net cash.

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: Memory is cyclical. For SKHY, memory is a deeply cyclical, commodity-influenced industry, so the record ASPs, margins, and profits seen in 2026 could reverse quickly if AI capital spending slows or if rivals add supply.

Pick MU if you believe its drivers more; SKHY 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 MU and SKHY guides.

MU. Memory companies trade at lower trailing P/E multiples than logic semiconductor companies because of their cyclical earnings. Micron's valuation reflects a position partway through a cyclical upcycle; trough-year P/E would look very different.

SKHY. SK hynix posted record 2025 results (~₩97 trillion revenue, ~₩47 trillion operating profit) and then set fresh quarterly records in Q1 2026 as HBM and server-DRAM demand and prices climbed. Despite the surge in earnings, the shares trade at a low single-digit-to-mid-single-digit forward P/E, well below the broad semiconductor sector, which reflects the market's memory-cycle skepticism. Figures are approximate and converted from Korean won at prevailing rates.

Headline figures (approximate, early 2026): MU shows revenue (ttm) ~$35 billion (after recovering from 2023 cyclical trough), operating margin ~30% (cyclical; trough years can be negative), net income (ttm) ~$8 billion, eps (ttm) ~$7.20; SKHY shows revenue (ttm) ~₩132 trillion (~$98 billion), fy2025 revenue ~₩97.1 trillion, q1 2026 revenue ~₩52.6 trillion (up ~198% YoY), q1 2026 operating margin ~72%.

MU and SKHY 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 MU and SKHY exposure against your real portfolio. It is not an investment adviser.