SNCAF vs STN: Which Is the Better Buy in 2026?
Last updated October 2026
Short answer
SNCAF and STN are similarly sized, but STN trades noticeably cheaper on forward earnings (14.31x vs 29.46x): the market is paying up for SNCAF's profile and pricing STN more conservatively, or for faster growth. Which you prefer comes down to the drivers you believe, and whether adding either over-concentrates what you already own.
SNCAF vs STN: the tie-breaker metrics
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.
| Metric | SNCAF | STN | What it tells you |
|---|---|---|---|
| Market cap | $9.71B | $7.79B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 29.46 | 14.31 | 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. |
| Trailing P/E | 30.96 | 21.58 | Valuation on the last 12 months. A big drop from trailing to forward means the market expects earnings to jump, so more growth is already in the price. |
| Beta | 0.93 | 0.73 | 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 | 18% of range | 8% 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 | 2.57 | 3.27 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Reading it: STN 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.
Before you buy: how SNCAF and STN 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. SNCAF and STN 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 SNCAF and STN 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 AtkinsRealis Group (SNCAF) do?
AtkinsRéalis Group Inc. (renamed from SNC-Lavalin in 2023) designs, engineers and manages infrastructure projects worldwide. The largest part of the business is Engineering Services Regions, ~C$7.5 billion of 2025 revenue, which earns fees for transport, water, buildings, defence and energy consulting across Canada, the UK, the US, Australia, Ireland and the Middle East. The Nuclear segment (~C$2.3 billion in 2025) services the global fleet of CANDU reactors, a design the company owns, supports refurbishments such as Bruce Power and Darlington, and is working on new builds such as Cernavoda 3 and 4 in Romania. Linxon (power substations) and a small Capital segment make up the rest. The company has exited the lump-sum turnkey construction contracts that caused years of losses. SNCAF is the same ordinary share as ATRL, quoted in US dollars one for one, not an ADR, so it tracks the Toronto price converted at the CAD/USD rate, with thinner OTC volume.
What does Stantec (STN) do?
Stantec sells professional services, not products. Roughly 32,000 engineers, architects, scientists and planners bill time on projects across five business lines: Water, Environmental Services, Infrastructure, Buildings, and Energy & Resources, reported in three geographic segments (United States, Canada and Global). The work is unglamorous and specific: designing water and wastewater treatment upgrades, transit and highway projects, hospitals, semiconductor and advanced-manufacturing plants, permitting and remediation studies. Clients skew public sector, so revenue follows municipal, state, provincial and national capital programs. Recent examples show the shape of it: Stantec was named a preferred bidder as a primary designer on the multibillion-pound Scottish Water investment program, and in May 2026 joined a joint venture to deliver Greater Western Water's infrastructure program in Australia.
SNCAF vs STN: 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.
- SNCAF drivers: Nuclear build-out and CANDU; Engineering Services backlog and margins.
- STN drivers: Water and wastewater capital cycles; Record backlog converting to billable hours.
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: Nuclear projects are long, politically dependent and exposed to delays, financing decisions and cost overruns. For STN, public budgets are the demand curve here, so a funding freeze, an election-driven pause or a slower federal appropriations cycle in the United States shows up as delayed starts and lower utilization.
SNCAF or STN: which should you pick?
SNCAF vs STN: the full fundamentals
SNCAF. At ~US$61 a share on the SNCAF line, the stock trades at roughly 23x trailing adjusted earnings of ~C$3.7 a share and about 22% below its ~US$79 52-week high. The trailing price-to-earnings ratio shown on quote screens is higher because it uses IFRS earnings, and reported net income comparisons are distorted by the ~C$2.2 billion Highway 407 gain in 2025, so adjusted figures from the core services business are the cleaner read. Company figures are in Canadian dollars; the SNCAF price and market cap are in US dollars.
STN. Stantec reports in Canadian dollars while trading in US dollars on the NYSE, so screener figures often mix currencies and are best checked against the company's own releases. The 2026 guide was reaffirmed on revenue and raised on margin with Q2 results in August 2026, yet the shares trade near ~14x forward earnings against ~23x trailing in August. With the stock down ~37% over a year while adjusted EPS grew in the high teens, nearly all of the move has come from the multiple rather than the earnings line; Q3 results arrive November 12, 2026, with consensus near ~C$1.77 of adjusted EPS.
Headline figures (approximate, October 2026): SNCAF shows revenue (ttm) ~C$11.7 billion, revenue (fy2025) ~C$11.0 billion (+14%), adjusted diluted eps (ttm) ~C$3.7, market cap ~US$9.8 billion; STN shows net revenue (ttm) ~C$6.8 billion; Q2 2026 up ~11.5% (~3.7% organic), adjusted ebitda margin ~18.7% in Q2 2026, ~18% trailing; 2026 guide ~17.8% to ~18.3%, net income (ttm) ~C$505 million, q2 2026 adjusted eps ~C$1.61, up ~18.4%, vs ~C$1.58 expected.
The bottom line: SNCAF vs STN
SNCAF and STN 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 SNCAF and STN exposure against your real portfolio. It is not an investment adviser.
Wondering how SNCAF or STN fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in AtkinsRealis Group with AI
Connect the broker you already use and ask Walnut's AI how SNCAF 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 SNCAF and STN?
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AtkinsRéalis Group Inc. Stantec sells professional services, not products. 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 SNCAF or STN the better stock?
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Neither is universally better; they suit different views and risk levels. 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, SNCAF or STN?
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On forward P/E (as of October 2026), SNCAF trades at 29.46x and STN at 14.31x, so STN 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 SNCAF and STN?
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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 SNCAF vs STN?
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SNCAF: Nuclear projects are long, politically dependent and exposed to delays, financing decisions and cost overruns. Nuclear backlog fell to ~C$4.2 billion at June 30, 2026 from ~C$5.6 billion a year earlier as refurbishment work was burned off, so the segment needs new awards such as Cernavoda contracts or further Ontario work to sustain its pace, and the US CANDU licensing effort is at a very early stage. The company's history includes large losses on fixed-price construction contracts and past corruption cases (a 2019 guilty plea tied to Libya and a 2022 remediation agreement), so governance and contract discipline remain under scrutiny. The Middle East conflict has already cut regional organic growth to ~2%, and government infrastructure budgets in Canada and the UK can shift with elections. A union representing engineers in Canada has publicly pressed for a new contract. Currency moves between the Canadian dollar, pound and US dollar affect reported results and the US-dollar SNCAF quote. At roughly 23x trailing adjusted earnings, the valuation leaves less room for disappointment than at a typical engineering consultancy. STN: Public budgets are the demand curve here, so a funding freeze, an election-driven pause or a slower federal appropriations cycle in the United States shows up as delayed starts and lower utilization. The US surface transportation reauthorization that follows the IIJA was still being negotiated in 2026, and US organic growth was flat in Q2. The acquisition strategy carries real hazards: integration misses, retention of acquired principals, and a balance sheet weighted toward goodwill and intangibles from deals like Page. Reported results are in Canadian dollars while the United States is the largest segment, so the CAD/USD rate moves both revenue and the NYSE-quoted price. Labor is the cost base and the constraint at once, meaning wage inflation compresses margins unless it passes into billing rates. Finally, the stock's slide from roughly $114 to about $69 over the past year, a ~37% fall while earnings grew, is a reminder that a services company can derate on sentiment about infrastructure spending well before any operating number changes. Net debt of ~1.3x adjusted EBITDA sits inside the 1x to 2x target, but buybacks and acquisitions compete for the same cash.
Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell SNCAF or STN; figures are approximate and dated (as of October 2026). Verify current data before investing.