PH vs WWD: How Parker Hannifin and Woodward 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: PH 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. PH and WWD 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 PH and WWD 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.

Parker Hannifin makes motion and control technologies: hydraulics, pneumatics, filtration, sealing and electromechanical systems used across industrial machinery and aerospace.

Full PH guide

Woodward is an industrial technology company that designs control systems and components for aircraft engines and industrial power equipment. It operates two segments. Aerospace, its larger and higher-margin segment, makes fuel-control systems, actuators, valves, and motion-control hardware that go into commercial jet engines, business jets, and military aircraft and weapons, sold both to original-equipment manufacturers and as lucrative aftermarket spares. Industrial makes controls and fuel systems for natural-gas and diesel engines, turbines, and increasingly for power generation, marine, and alternative fuels (hydrogen and natural gas used in transportation and energy). Woodward's products are mission-critical precision components where reliability matters more than price, giving it durable customer relationships and a steady aftermarket revenue stream tied to the large installed base of engines it has equipped over decades. Founded in 1870 and headquartered in Fort Collins, Colorado, Woodward is a niche, high-quality aerospace and industrial supplier leveraged to the commercial-aerospace recovery and energy transition.

Full WWD guide

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

• PH drivers: Aerospace is now a major earnings engine; Aftermarket and replacement demand.
• WWD drivers: Commercial aerospace recovery and aftermarket; Defense and mission-critical content.

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: Industrial demand is cyclical and tracks capital spending, manufacturing output and construction. For WWD, woodward is exposed to the commercial-aerospace cycle: a downturn in air travel or a slowdown in OEM build rates (including production issues at Boeing or Airbus) directly reduces demand.

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 PH if you believe its drivers more; WWD 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 PH and WWD guides.

PH. Parker is a diversified industrial whose story in recent years has been margin expansion and the aerospace mix shift rather than rapid revenue growth. Verify current segment margins and leverage.

WWD. Woodward trades at a premium aerospace-supplier multiple, reflecting its mission-critical content, sticky high-margin aftermarket, and leverage to the commercial-aerospace recovery and defense spending. The valuation embeds expectations for continued aftermarket growth and margin expansion. Investors pay up for the quality of the franchise and the durability of its installed-base revenue rather than for rapid top-line growth.

Headline figures (approximate, July 2026): PH shows business model Motion and control components across industrial and aerospace, key mix shift Aerospace substantially larger after the Meggitt acquisition, revenue quality Large aftermarket and replacement component, balance sheet Carries acquisition debt; verify current leverage; WWD shows revenue (ttm) ~$3.3 billion, operating margin ~14-16%, aerospace revenue share ~65% (higher-margin), eps (ttm) ~$5.50-6.00 adjusted.

PH and WWD 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 PH and WWD exposure against your real portfolio. It is not an investment adviser.