Which has grown faster, ETON or RARE?

Over the past five years, ETON grew revenue faster — ETON at a 47.98% CAGR versus RARE at 14.81%.

Is ETON or RARE more profitable?

ETON runs the higher net margin — ETON at 12.02% versus RARE at -81.79%.

How have ETON and RARE total returns compared?

Over the past 5 years, ETON delivered 63.04% and RARE delivered -30.14% annualized total return. Past performance doesn't predict future results.

Eton Pharmaceuticals, Inc. (ETON) vs Ultragenyx Pharmaceutical Inc. (RARE)

A side-by-side comparison of Eton Pharmaceuticals, Inc. and Ultragenyx Pharmaceutical 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.

ETON

Eton Pharmaceuticals, Inc.

$1.50B

$54.77HealthcareDelayed quote: Oct 6, 2026, 4:00 PM EDT

RARE

Ultragenyx Pharmaceutical Inc.

$1.42B

$14.46HealthcareDelayed quote: Oct 6, 2026, 4:00 PM EDT

Total return — ETON vs RARE

growth of $100 · dividends reinvested · last 8y

ETON +789.9% (+31.4%/yr)RARE -72.2% (-14.8%/yr)ETON compounded faster over this window

Log scale — wide-divergence pair

ETON RARE

ETON vs RARE: by the numbers

•ETON is the larger company ($1.50B vs $1.42B market cap).
•ETON is profitable (12.02% net margin) while RARE runs a net loss (-81.79%).
•ETON grew revenue faster over the past five years (47.98% vs 14.81% CAGR).

Metrics side by side

Valuation

Metric	ETON	RARE
P/E ratio	142.41	N/A
Forward P/E	50.36	N/A
P/S ratio	14.21	1.99
P/B ratio	32.21	N/A
EV / EBITDA	72.05	N/A
FCF yield	0.98%	N/A

Profitability

Metric	ETON	RARE
Gross margin	57.87%	83.12%
Operating margin	0.09%	-73.77%
Net margin	12.02%	-81.79%
ROE	27.24%	N/A
ROIC	20.41%	-53.48%

Growth (annualized)

Metric	ETON	RARE
Revenue CAGR (5Y)	47.98%	14.81%
Total return CAGR (5Y)	63.04%	-30.14%

Frequently asked

Which has grown faster, ETON or RARE?: Over the past five years, ETON grew revenue faster — ETON at a 47.98% CAGR versus RARE at 14.81%.
Is ETON or RARE more profitable?: ETON runs the higher net margin — ETON at 12.02% versus RARE at -81.79%.
How have ETON and RARE total returns compared?: Over the past 5 years, ETON delivered 63.04% and RARE delivered -30.14% annualized total return. Past performance doesn't predict future results.

Go deeper

Full ETON analysis Full RARE analysis Interactive comparison tool

Dig into the metrics

Eton Pharmaceuticals P/E ratio Eton Pharmaceuticals ROE Ultragenyx Pharmaceutical ROE Eton Pharmaceuticals operating margin Ultragenyx Pharmaceutical operating margin Eton Pharmaceuticals revenue growth Ultragenyx Pharmaceutical revenue growth Eton Pharmaceuticals free cash flow Ultragenyx Pharmaceutical free cash flow

Eton Pharmaceuticals & Ultragenyx Pharmaceutical appear in these rankings

Fastest Revenue Growth Stocks Highest ROE Stocks Highest ROIC Stocks

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.