ABBNY vs SIEGY: 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: SIEGY 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. ABBNY and SIEGY 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 ABBNY and SIEGY 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.

ABB Ltd is a Zurich-based industrial technology company with roots going back to 1883 (through ASEA and Brown Boveri). It now reports three business areas. Electrification, the largest and most profitable, makes the low and medium voltage gear that moves power safely inside buildings, factories, data centers and grid connections: switchgear, breakers, distribution panels, UPS systems and smart building products. Motion makes electric motors, variable speed drives, traction equipment for rail and large machines such as synchronous condensers that help stabilize grids. Automation (formerly Process Automation) provides control systems, instrumentation, marine propulsion and electrification, and engineering for energy-intensive industries like oil and gas, mining, pulp and paper, and power generation. The former Robotics division is being sold to SoftBank for an enterprise value of ~$5.4 billion, with completion expected in the second half of 2026, and is reported as a discontinued operation. Primary listings are on the SIX Swiss Exchange (ABBN) and Nasdaq Stockholm; US investors trade a sponsored Level I ADR over the counter as ABBNY after ABB left the NYSE in 2023.

Full ABBNY guide

Siemens AG is one of Europe's largest industrial technology companies, headquartered in Munich. It runs four main businesses: Digital Industries (factory automation hardware such as PLCs and drives, plus industrial software including Xcelerator, Teamcenter, NX and the recently acquired Altair and Dotmatics), Smart Infrastructure (electrical products, grid technology and building systems, a big beneficiary of data center and electrification spending), Mobility (rail vehicles, signaling and rail software), and a roughly 67% stake in Siemens Healthineers, the medical imaging and diagnostics company that Siemens plans to separate. Fiscal years end on September 30, and US investors typically hold the company through the SIEGY sponsored ADR, which trades over the counter in dollars rather than on a US exchange. The company employs roughly 300,000 people, sells in close to 190 countries and generates a large share of revenue outside Germany, with the US and China among its biggest markets.

Full SIEGY guide

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

• ABBNY drivers: Data center and AI power infrastructure; Grid modernization, energy resilience and efficiency.
• SIEGY drivers: Electrification and data center demand at Smart Infrastructure; Industrial software and the Altair and Dotmatics deals.

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: Valuation is the most immediate risk: at a trailing P/E in the mid-30s, ABB trades well above its own long-run average and above many European industrial peers, so a slowdown in orders could weigh on the shares even if earnings keep growing. For SIEGY, siemens is cyclical at the margin: an industrial slowdown, weaker China demand or a pause in data center spending would hit orders and the premium multiple at the same time.

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 ABBNY if you believe its drivers more; SIEGY 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 ABBNY and SIEGY guides.

ABBNY. Figures are taken from ABB's FY2025 and Q2 2026 reports (published January 29 and July 16, 2026) and reflect continuing operations, so the Robotics division being sold to SoftBank is excluded. With the ADR near ~$100 and the Swiss shares around ~CHF 78 to 82, ABB's market value is roughly ~$190 billion, and the mid-30s trailing P/E sits above the analyst consensus target range reported by data aggregators (average around ~CHF 78), which helps explain a consensus that leans neutral. The next data point is Q3 2026 results, scheduled for around October 20, 2026, against management guidance of low to mid-teens comparable revenue growth for the quarter.

SIEGY. At a Frankfurt share price around €240, Siemens trades at roughly 21 times the midpoint of its raised fiscal 2026 EPS guidance, a premium to its own history and to many diversified industrials but below pure-play electrification and automation names such as Schneider Electric. The SIEGY ADR represents one-half of an ordinary share, so its dollar price is roughly half the euro share price converted at the current exchange rate. Full fiscal 2026 results are due in mid-November 2026. The quarterly cadence matters for ADR holders: results arrive in November, February, May and August, and the ADR typically reacts in the US session following the morning German release.

Headline figures (approximate, October 2026): ABBNY shows revenue (ttm, continuing ops) ~$35.7 billion, q2 2026 orders / revenue ~$12.0B (+30%) / ~$9.5B (+14%), operational ebita margin (q2 2026) ~20.2%, basic eps (ttm) ~$2.77; SIEGY shows revenue (ttm) ~€81 billion, fiscal q3 2026 orders ~€27.9 billion (book-to-bill ~1.34), order backlog ~€132 billion, fy2026 eps pre-ppa guidance ~€11.20 to €11.50.

ABBNY and SIEGY 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 ABBNY and SIEGY exposure against your real portfolio. It is not an investment adviser.