Is ATRA or RLYB more profitable?

RLYB runs the higher net margin — ATRA at -269.42% versus RLYB at 7051.24%.

How have ATRA and RLYB total returns compared?

Over the past 5 years, ATRA delivered -53.60% and RLYB delivered -35.80% annualized total return. Past performance doesn't predict future results.

Atara Biotherapeutics, Inc. (ATRA) vs Rallybio Corporation (RLYB)

A side-by-side comparison of Atara Biotherapeutics, Inc. and Rallybio Corporation 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.

ATRA

Atara Biotherapeutics, Inc.

$86M

$9.59HealthcareDelayed quote: Oct 6, 2026, 1:17 PM EDT

RLYB

Rallybio Corporation

$90M

$17.02HealthcareDelayed quote: Oct 6, 2026, 1:01 PM EDT

Total return — ATRA vs RLYB

growth of $100 · dividends reinvested · last 5y

ATRA -97.0% (-50.5%/yr)RLYB -85.0% (-31.6%/yr)RLYB compounded faster over this window

Log scale — wide-divergence pair

ATRA RLYB

ATRA vs RLYB: by the numbers

•RLYB is the larger company ($90M vs $86M market cap).
•RLYB is profitable (7051.24% net margin) while ATRA runs a net loss (-269.42%).

Metrics side by side

Valuation

Metric	ATRA	RLYB
P/E ratio	N/A	2.18
P/S ratio	13.95	139.82
P/B ratio	N/A	0.96
FCF yield	N/A	29.16%

Profitability

Metric	ATRA	RLYB
Gross margin	82.44%	89.28%
Operating margin	29.69%	-3270.86%
Net margin	-269.42%	7051.24%
ROE	N/A	48.20%
ROIC	-100.35%	-24.40%

Growth (annualized)

Metric	ATRA	RLYB
Revenue CAGR (5Y)	56.10%	N/A
Total return CAGR (5Y)	-53.60%	-35.80%

Frequently asked

Is ATRA or RLYB more profitable?: RLYB runs the higher net margin — ATRA at -269.42% versus RLYB at 7051.24%.
How have ATRA and RLYB total returns compared?: Over the past 5 years, ATRA delivered -53.60% and RLYB delivered -35.80% annualized total return. Past performance doesn't predict future results.

Go deeper

Full ATRA analysis Full RLYB analysis Interactive comparison tool

Dig into the metrics

Rallybio P/E ratio Atara Biotherapeutics ROE Rallybio ROE Atara Biotherapeutics operating margin Rallybio operating margin Atara Biotherapeutics revenue growth Rallybio revenue growth Atara Biotherapeutics free cash flow Rallybio free cash flow

Atara Biotherapeutics & Rallybio appear in these rankings

Fastest Revenue Growth Stocks Highest ROE Stocks Highest FCF Yield Stocks Lowest P/E Ratio 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.