CCJ vs CEG: How Cameco and Constellation Energy Compare (2026)

Same yardstick, side by side (as of August 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: CEG 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. CCJ and CEG 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 CCJ and CEG 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.

Cameco (CCJ) is one of the world's largest publicly traded uranium producers and a major supplier of nuclear fuel. Based in Saskatchewan, Canada, it mines uranium from some of the highest-grade deposits in the world, including the Cigar Lake and McArthur River operations, and sells uranium concentrate (U3O8) to utilities that run nuclear power plants. Beyond mining, Cameco participates across the nuclear fuel cycle through refining, conversion, and fuel-fabrication activities, and it holds a significant interest in Westinghouse, a leading provider of nuclear reactor technology and services, acquired alongside Brookfield. Cameco's revenue is tied to long-term contracts with utilities and to uranium spot and contract prices, which are driven by global nuclear power demand, supply discipline, and the broader case for clean, baseload electricity. It trades on the New York Stock Exchange and the Toronto Stock Exchange.

Full CCJ guide

Constellation Energy (CEG) is the largest producer of carbon-free electricity in the United States, operating the country's biggest fleet of nuclear power plants alongside hydro, wind, and solar assets. Spun off from Exelon in 2022, it generates and sells power and provides energy services to commercial, industrial, government, and residential customers. Constellation's nuclear fleet produces large, steady volumes of around-the-clock, low-carbon electricity, which has become increasingly valuable as datacenters, electrification, and AI computing drive up demand for reliable clean power. The company has pursued long-term power-supply agreements with large energy buyers, including technology companies seeking carbon-free electricity for datacenters, and announced an agreement to acquire Calpine, a major natural-gas and geothermal generator, to broaden its generation mix. Headquartered in Baltimore, Maryland, Constellation benefits from federal clean-energy incentives, including production tax-credit support for existing nuclear plants.

Full CEG guide

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

• CCJ drivers: Nuclear demand and the clean-energy case; Uranium supply discipline and pricing.
• CEG drivers: Datacenter and AI power demand; Nuclear fleet value and clean-energy support.

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: Cameco's results are tied to volatile uranium prices and to global nuclear power sentiment, which can swing on policy and on high-profile events. For CEG, constellation has merchant exposure, so its results depend partly on wholesale power and commodity prices, which can be volatile.

Pick CCJ if you believe its drivers more; CEG 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 CCJ and CEG guides.

CCJ. Cameco often trades on a high or volatile price-to-earnings multiple because its earnings swing with uranium prices and reflect the Westinghouse investment. Investors typically value it on the long-term uranium demand and supply outlook and on its contracted sales book rather than on a single year of earnings. All figures are approximate and move with uranium prices and the share price; verify current numbers before relying on them.

CEG. Constellation trades at a higher multiple than most regulated utilities because investors price in growth from AI and datacenter power demand and the premium value of carbon-free baseload generation. That re-rating embeds optimism about long-term clean-power contracts; the multiple can compress if power-demand growth or policy support disappoints. All figures are approximate and move with power prices and the share price; verify current numbers before relying on them.

Headline figures (approximate, early 2026): CCJ shows revenue (ttm) ~$2-3 billion (approximate, verify), primary product Uranium concentrate (U3O8), key assets Cigar Lake, McArthur River; ~49% Westinghouse stake (verify), p/e (ttm) Elevated and volatile (commodity earnings; approximate, verify); CEG shows revenue (ttm) ~$23-25 billion (approximate, verify), position Largest US producer of carbon-free electricity, fleet Largest US nuclear fleet plus hydro, wind, solar, p/e (ttm) ~25-30x or higher (approximate, verify).

CCJ and CEG 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 CCJ and CEG exposure against your real portfolio. It is not an investment adviser.