ADAP vs ATRA

Comparison between Adaptimmune Therapeutics plc American Depositary Shares (ADAP, Company) and Atara Biotherapeutics Inc (ATRA, Company).

Both ADAP and ATRA are from the Healthcare sector.

5-Year PerformanceATRA has outperformed ADAP, delivering a return of -51.3% compared to -59.1%

ADAP vs ATRA - Performance Comparison

Log

Key Characteristics

Financial metrics and valuation ratios

Metric	ADAP(COMPANY)	ATRA(COMPANY)
Market Cap	$87M	$87M
Max Drawdown	99.81%	99.74%
Sharpe Ratio	-0.21	0.58
5Y Beta	N/A	1.30
Industry	Biotechnology	Biotechnology
P/E Ratio	-0.50	-4.48
Forward P/E	N/A	3.63
5Y EPS CAGR	N/A	-53.66%
Debt to Equity	423.98%	0.00%
Free Cash Flow Yield	N/A	-25.13%
P/S Ratio	1.39	N/A
P/B Ratio	-1.23	N/A

Market Cap

ADAP

$87M

Winner

ATRA

$87M

Max Drawdown

ADAP

99.81%

Winner

ATRA

99.74%

Sharpe Ratio

ADAP

-0.21

Winner

ATRA

0.58

5Y Beta

ADAP

N/A

ATRA

1.30

Industry

ADAP

Biotechnology

ATRA

Biotechnology

P/E Ratio

ADAP

-0.50

Winner

ATRA

-4.48

Forward P/E

ADAP

N/A

ATRA

3.63

5Y EPS CAGR

ADAP

N/A

ATRA

-53.66%

Debt to Equity

ADAP

423.98%

Winner

ATRA

0.00%

Free Cash Flow Yield

ADAP

N/A

ATRA

-25.13%

P/S Ratio

ADAP

1.39

ATRA

N/A

P/B Ratio

ADAP

-1.23

ATRA

N/A

ADAP vs ATRA - Historical Returns

Returns include dividend reinvestment.

Period	ADAP	ATRA
1 month	-62.65%	-1.85%
3 months	-45.10%	-18.80%
6 months	-80.19%	+91.24%
1 year	-92.55%	-29.84%
5 years(CAGR)	-59.08%	-51.32%
10 years(CAGR)	-40.87%	-33.85%
Max(CAGR)	-41.82%	-25.26%

ADAP

-62.65%

Winner

ATRA

-1.85%

ADAP

-45.10%

Winner

ATRA

-18.80%

ADAP

-80.19%

Winner

ATRA

+91.24%

ADAP

-92.55%

Winner

ATRA

-29.84%

5Y(CAGR)

ADAP

-59.08%

Winner

ATRA

-51.32%

10Y(CAGR)

ADAP

-40.87%

Winner

ATRA

-33.85%

Max(CAGR)

ADAP

-41.82%

Winner

ATRA

-25.26%

ADAP vs ATRA - Annual Returns (2014 - 2026)

Returns include dividend reinvestment.

Year	ADAP	ATRA
2026	N/A	-52.11%
2025	-91.19%	+27.75%
2024	-27.79%	+10.94%
2023	-52.51%	-84.37%
2022	-64.04%	-80.58%
2021	-37.60%	-19.76%
2020	+341.80%	+19.62%
2019	-78.34%	-53.29%
2018	-19.01%	+91.93%
2017	+62.14%	+20.07%
2016	-65.74%	-40.96%
2015	-24.62%	-1.09%
2014	N/A	+151.17%

ADAP vs ATRA Drawdown Comparison

The maximum drawdown for ADAP was -99.81%, occurring on Sep 5, 2025. This drawdown has not yet recovered.

The maximum drawdown for ATRA was -99.74%, occurring on Feb 20, 2026. This drawdown has not yet recovered.

The current ADAP drawdown is -99.74%. The current ATRA drawdown is -99.47%.

Rank	ADAP	ATRA
#1	-99.81% Jun 16, 2015 - Sep 5, 2025	-99.74% Apr 23, 2015 - Feb 20, 2026
#2	-14.05% May 7, 2015 - Jun 11, 2015	-43.40% Dec 2, 2014 - Mar 12, 2015
#3	N/A	-21.57% Nov 7, 2014 - Dec 2, 2014
#4	N/A	-10.42% Mar 23, 2015 - Mar 30, 2015
#5	N/A	-7.46% Oct 20, 2014 - Oct 24, 2014
#6	N/A	-7.11% Oct 28, 2014 - Nov 3, 2014
#7	N/A	-6.34% Mar 30, 2015 - Apr 2, 2015
#8	N/A	-5.13% Mar 12, 2015 - Mar 17, 2015
#9	N/A	-4.65% Mar 17, 2015 - Mar 19, 2015
#10	N/A	-3.50% Apr 2, 2015 - Apr 8, 2015
#11	N/A	-1.95% Apr 16, 2015 - Apr 20, 2015
#12	N/A	-0.44% Nov 5, 2014 - Nov 7, 2014
#13	N/A	-0.27% Apr 13, 2015 - Apr 16, 2015