Terrestrial Energy Inc. (IMSR) P/E Ratio History
Insufficient DataInsufficient historical P/E data to classify valuation. · Data 2026–2026
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P/E Ratio Analysis
As of June 16, 2026, Terrestrial Energy Inc. (IMSR) trades at a price-to-earnings ratio of -19.4x, with a stock price of $7.56 and trailing twelve-month earnings per share of $-0.44.
Compared to the Energy sector median P/E of 16.4x, IMSR trades at a 218% discount to its sector peers. The sector includes 173 companies with P/E ratios ranging from 1.8x to 172.4x.
Relative to the broader market, IMSR trades at a notable discount to the S&P 500 median P/E of 25.0x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our IMSR DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
IMSR Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
IMSR P/E vs Peers
Small modular nuclear reactors peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $18B | 54.0 | 12.59 | +17% | |
| $263B | 55.3 | - | +217% | |
| $3B | 45.3Lowest | 0.97Best | -13% | |
| $47B | 111.1 | - | +246%Best |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
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Compare NowIMSR — Frequently Asked Questions
Quick answers to the most common questions about buying IMSR stock.
What is IMSR's P/E ratio?
Terrestrial Energy Inc. (IMSR) trailing twelve-month P/E ratio is -19.4x, based on TTM diluted EPS of $-0.44. The 5-year average P/E is N/A and the historical range spans N/A to N/A.
Is IMSR stock overvalued or undervalued?
IMSR current P/E: -19.4x. 5-year average P/E: N/A. Percentile: N/A.
Is IMSR stock expensive?
IMSR is fairly valued relative to its own history. The current P/E of -19.4x is near the 5-year average of N/A (N/A percentile of historical range).
What is IMSR's historical P/E range?
Over the past 5 years, IMSR's P/E ratio has ranged from N/A to N/A, with a median of N/A and an average of N/A. The current P/E of -19.4x places the stock at the N/A percentile of this range. Full historical data spans 2026–2026.
How does IMSR's P/E compare to the S&P 500?
IMSR trades at -19.4x P/E versus the S&P 500 median of 25.0x. The 178% discount to the market suggests lower growth expectations or perceived higher risk.
How does IMSR's valuation compare to Energy peers?
Terrestrial Energy Inc. P/E of -19.4x compares to the Energy sector median of 16.4x. The discount suggests lower growth expectations, weaker margins, or higher perceived risk relative to peers. See the peer comparison table on this page for ticker-by-ticker P/E and PEG.
What is IMSR's PEG ratio?
IMSR PEG ratio is N/A, based on a P/E of -19.4x and EPS growth of -200.0%. PEG normalises P/E by growth and helps compare stocks with different earnings trajectories.
What is IMSR's earnings yield?
IMSR earnings yield is N/A, the inverse of its -19.4x P/E ratio. Earnings yield represents the percentage of each dollar invested that the company earns. It can be compared directly to bond yields to assess relative attractiveness of stocks versus fixed income.