CMI vs INIO: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of October 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: CMI 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. CMI and INIO 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 CMI and INIO 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.

Cummins Inc. is one of the world's largest independent makers of diesel and natural gas engines, and it operates across five segments: Engine, Components, Distribution, Power Systems, and Accelera (its low-carbon and electrification arm). Its products power heavy- and medium-duty trucks, buses, construction and mining equipment, and standby and prime power generators, and it runs a large aftermarket parts and service network. The Distribution segment is the largest by revenue, while Power Systems has been the fastest-growing thanks to demand for backup power at data centers.

Full CMI guide

INNIO N.V. designs, manufactures, and services high-performance gas-fueled power systems under its Jenbacher and Waukesha brands, supported by the myPlant digital platform. Its engines supply distributed power for data centers, microgrids, grid stabilization, industrial energy, and natural-gas compression, and the company splits its business into an Equipment segment (new engines and related solutions) and a Services segment (long-term maintenance and spare parts on a large installed base). The company traces its roots to GE's distributed-power unit, which private-equity firm Advent bought in 2018; the Abu Dhabi Investment Authority later became a co-owner.

Full INIO guide

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

• CMI drivers: Data center backup power; North American truck cycle.
• INIO drivers: AI and data center power demand; High-margin services and installed base.

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: Cummins is exposed to the industrial and freight cycle, so a downturn in truck demand or construction spending can cut engine volumes and margins quickly. For INIO, the stock has proved highly volatile: after rising well above its $27 IPO price it fell to about $16.45 by mid-October 2026, roughly half its first-day level, and even at that price it trades near 21 times 2027 consensus earnings and about 4 times sales, so it still depends on a steep profit ramp.

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 CMI if you believe its drivers more; INIO 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 CMI and INIO guides.

CMI. The pullback from a ~$737.76 high has compressed the valuation: the forward P/E near 15x is far below the ~27x trailing figure because analysts expect earnings to jump on data center power demand, with third-quarter EPS forecast up more than 60% year over year. Price targets have come down in October 2026 (Barclays $675, Bernstein $557) but the mean target of ~$721 still sits well above the share price. Results on 5 November 2026 are the next test of whether that growth arrives.

INIO. INNIO's valuation has compressed sharply since the summer, from roughly ten times revenue near its peak to about four times trailing sales at a $12.3 billion market value. Trailing earnings are too small for a meaningful P/E, so the market is pricing the 2027 consensus of about $0.79 per share (around 21 times) and revenue near $5.2 billion. The 10 covering analysts lean buy with a mean target near $35.70, about double the October 16 close, which shows how far the share price has moved away from Street expectations.

Headline figures (approximate, October 2026): CMI shows revenue (ttm) ~$34.7B (FY2025 ~$33.7B); latest quarter +~9.4% YoY, net income (ttm) ~$2.72B, profit margin ~7.8%, operating margin ~11.9%, eps (ttm / 2026 est.) ~$19.57 trailing; ~$28.45 consensus for 2026; INIO shows revenue (ttm) ~$3.09B (latest quarter up ~42% YoY), revenue (fy2025) ~$2.64B (up ~22%), margins (gross / operating) ~34% / ~5%, net income (ttm) ~$24M.

CMI and INIO 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 CMI and INIO exposure against your real portfolio. It is not an investment adviser.