Fusion Fuel Green PLC (HTOO) vs Terrestrial Energy Inc. (IMSR)

A side-by-side comparison of Fusion Fuel Green PLC and Terrestrial Energy Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of October 6, 2026. Differences are shown without an overall score or investment verdict.

HTOO

Fusion Fuel Green PLC

$15M

$2.09UtilitiesDelayed quote: Oct 6, 2026, 1:46 PM EDT

IMSR

Terrestrial Energy Inc.

$335M

$4.06UtilitiesDelayed quote: Oct 6, 2026, 1:50 PM EDT

Total return — HTOO vs IMSR

growth of $100 · dividends reinvested · last 1y

HTOO -54.9% (-54.9%/yr)IMSR -83.5% (-83.5%/yr)HTOO compounded faster over this window

HTOO IMSR

Metrics side by side

Total return (annualized)

Metric	HTOO	IMSR
Total return (1Y)	-56.17%	N/A
Total return CAGR (3Y)	-56.90%	N/A
Total return CAGR (5Y)	-64.64%	N/A

HTOO is an index fund, so valuation, profitability, and per-company growth metrics don't apply — the head-to-head here is total return (price plus reinvested dividends).

Go deeper

Full HTOO analysis Full IMSR analysis Interactive comparison tool

Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified October 6, 2026.