AIQUY vs PLUG: How Air Liquide and Plug Power Compare (2026)
Last updated July 2026
Short answer
AIQUY is the larger of the two ($125.49B market cap): the incumbent the market prices for continued execution (24.11x forward earnings, beta 0.65). PLUG is the smaller challenger ($2.67B), priced similarly on forward earnings (-12.08x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.
AIQUY vs PLUG: the tie-breaker metrics
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.
| Metric | AIQUY | PLUG | What it tells you |
|---|---|---|---|
| Market cap | $125.49B | $2.67B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 24.11 | -12.08 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Beta | 0.65 | 2.17 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 40% of range | 16% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 4.17 | 3.56 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Before you buy: how AIQUY and PLUG affect your concentration
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. AIQUY and PLUG 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 AIQUY and PLUG 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.
What does Air Liquide (AIQUY) do?
Air Liquide is a French industrial gases company supplying oxygen, nitrogen, hydrogen and specialty gases to industry, healthcare and electronics manufacturing, typically under long-term contracts with on-site production.
What does Plug Power (PLUG) do?
Plug Power (PLUG) is a hydrogen and fuel-cell company building what it calls an end-to-end green hydrogen ecosystem. Its core legacy business is GenDrive fuel cells that replace lead-acid batteries in electric forklifts for large warehouse operators, with Amazon and Walmart as anchor customers. Beyond material handling, Plug sells electrolyzers (equipment that splits water into hydrogen using electricity), liquid hydrogen, cryogenic storage, and stationary power systems.
AIQUY vs PLUG: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- AIQUY drivers: Industrial gases is a structurally attractive business; Hydrogen for the energy transition.
- PLUG drivers: Material handling base; Green hydrogen production.
Which fits which kind of investor
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 gas demand tracks industrial production, so a manufacturing slowdown reduces volumes. For PLUG, plug has a long history of operating losses, negative free cash flow, and repeated equity and convertible-debt raises that dilute shareholders.
AIQUY or PLUG: which should you pick?
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 AIQUY if you believe its drivers more; PLUG 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 AIQUY and PLUG guides.
AIQUY vs PLUG: the full fundamentals
AIQUY. Air Liquide is a defensive industrial with contracted volumes and pricing power, valued accordingly. Verify current margins, energy pass-through and the capital committed to hydrogen projects.
PLUG. Plug is a pre-profitability growth story valued on hydrogen-economy optionality rather than current earnings. Traditional valuation multiples are not meaningful given losses and dilution. The investment case rests on whether green hydrogen reaches cost parity and Plug reaches positive gross margin before exhausting capital, making it speculative and sentiment-driven.
Headline figures (approximate, July 2026): AIQUY shows business model Industrial gases under long-term on-site and pipeline contracts, contract length Frequently fifteen years or more, giving volume visibility, listing US-traded ADR of a French company; exposed to euro moves, key input cost Energy, largely passed through to customers; PLUG shows revenue (ttm) ~$700 million, operating margin Deeply negative (large operating losses), net income (ttm) Net loss (~$1 billion range historically), free cash flow Negative (significant cash burn).
The bottom line: AIQUY vs PLUG
AIQUY and PLUG 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 AIQUY and PLUG exposure against your real portfolio. It is not an investment adviser.
Investing in Air Liquide with AI
Connect the broker you already use and ask Walnut's AI how AIQUY fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between AIQUY and PLUG?
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Air Liquide is a French industrial gases company supplying oxygen, nitrogen, hydrogen and specialty gases to industry, healthcare and electronics manufacturing, typically under long-term contracts with on-site production. Plug Power (PLUG) is a hydrogen and fuel-cell company building what it calls an end-to-end green hydrogen ecosystem. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is AIQUY or PLUG the better stock?
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Neither is universally better. AIQUY is the larger incumbent; PLUG is the smaller challenger and looks cheaper on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, AIQUY or PLUG?
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On forward P/E (as of July 2026), AIQUY trades at 24.11x and PLUG at -12.08x, so PLUG is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both AIQUY and PLUG?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of AIQUY vs PLUG?
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AIQUY: Industrial gas demand tracks industrial production, so a manufacturing slowdown reduces volumes. The business is energy-intensive, and electricity and natural gas costs are a major input that must be passed through. Large hydrogen projects require substantial capital with returns dependent on policy that can change. As a French company, US investors hold an ADR exposed to euro movements. PLUG: Plug has a long history of operating losses, negative free cash flow, and repeated equity and convertible-debt raises that dilute shareholders. Green hydrogen remains more expensive than fossil-derived hydrogen without subsidies, so demand outside incentivized material-handling and policy-driven projects is uncertain. Cash burn has periodically raised going-concern questions, and the company depends on capital markets staying open. Execution on production-plant ramps has slipped versus targets. The stock is highly volatile and sentiment-driven, swinging sharply on financing news, policy headlines, and quarterly cash levels rather than steady fundamentals.
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Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell AIQUY or PLUG; figures are approximate and dated (as of July 2026). Verify current data before investing.