IMSR vs SMR

For growth investors, NuScale Power Corporation (SMR) is the stronger pick with -15.

0% revenue growth year-over-year, versus -100. 0% for Terrestrial Energy Inc. (IMSR). Analysts rate NuScale Power Corporation (SMR) a "Buy" — based on 16 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

Over the past 5 years, NuScale Power Corporation (SMR) delivered a total return of +6.

5%, compared to -66. 7% for Terrestrial Energy Inc. (IMSR). Over 10 years, the gap is even starker: SMR returned +7. 0% versus IMSR's -66. 7%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), NuScale Power Corporation (SMR) is the lower-risk stock at 4.

06β versus Terrestrial Energy Inc. 's 4. 60β — meaning IMSR is approximately 13% more volatile than SMR relative to the S&P 500.

By revenue growth (latest reported year), NuScale Power Corporation (SMR) is pulling ahead at -15.

0% versus -100. 0% for Terrestrial Energy Inc. (IMSR). On earnings-per-share growth, the picture is similar: NuScale Power Corporation grew EPS -47. 6% year-over-year, compared to -200. 0% for Terrestrial Energy Inc.. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Terrestrial Energy Inc.

(IMSR) is the more profitable company, earning 0. 0% net margin versus -1130. 3% for NuScale Power Corporation — meaning it keeps 0. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: IMSR leads at 0. 0% versus -21. 9% for SMR. At the gross margin level — before operating expenses — SMR leads at 36. 3%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

None of the stocks in this comparison currently pay a material dividend.

All are effectively zero-yield and should be held for capital appreciation rather than income.

For long-horizon retirement investors, NuScale Power Corporation (SMR) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding.

Terrestrial Energy Inc. (IMSR) carries a higher beta of 4. 60 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (SMR: +7. 0%, IMSR: -66. 7%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

These companies operate in different sectors (IMSR (Energy) and SMR (Utilities)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.