PRTA vs GDYN

Comparison between Prothena Corporation plc (PRTA, Company) and Grid Dynamics Holdings Inc - Class A (GDYN, Company).

PRTA is from the Healthcare sector, while GDYN is from the Technology sector.

5-Year PerformanceGDYN has outperformed PRTA, delivering a return of -19.8% compared to -29.4%

PRTA vs GDYN - Performance Comparison

Log

Key Characteristics

Financial metrics and valuation ratios

Metric	PRTA(COMPANY)	GDYN(COMPANY)
Market Cap	$474M	$473M
Max Drawdown	94.19%	87.45%
Sharpe Ratio	1.09	-0.99
5Y Beta	0.94	1.22
Industry	Biotechnology	Information Technology Services
P/E Ratio	-3.19	90.99
Forward P/E	10.63	131.58
PEG Ratio	-0.09	N/A
5Y EPS CAGR	-1.54%	N/A
Debt to Equity	0.00%	0.00%
Free Cash Flow Yield	-17.16%	5.01%

Market Cap

Winner

PRTA

$474M

GDYN

$473M

Max Drawdown

PRTA

94.19%

Winner

GDYN

87.45%

Sharpe Ratio

Winner

PRTA

1.09

GDYN

-0.99

5Y Beta

Winner

PRTA

0.94

GDYN

1.22

Industry

PRTA

Biotechnology

GDYN

Information Technology Services

P/E Ratio

Winner

PRTA

-3.19

GDYN

90.99

Forward P/E

Winner

PRTA

10.63

GDYN

131.58

PEG Ratio

PRTA

-0.09

GDYN

N/A

5Y EPS CAGR

PRTA

-1.54%

GDYN

N/A

Debt to Equity

PRTA

0.00%

GDYN

0.00%

Free Cash Flow Yield

PRTA

-17.16%

Winner

GDYN

5.01%

PRTA vs GDYN - Historical Returns

Returns include dividend reinvestment.

Period	PRTA	GDYN
1 month	-6.88%	-15.27%
3 months	+3.96%	-5.98%
6 months	-4.80%	-41.65%
1 year	+55.30%	-51.54%
5 years(CAGR)	-29.43%	-19.76%
10 years(CAGR)	-13.89%	N/A
Max(CAGR)	+1.61%	-6.56%

Winner

PRTA

-6.88%

GDYN

-15.27%

Winner

PRTA

+3.96%

GDYN

-5.98%

Winner

PRTA

-4.80%

GDYN

-41.65%

Winner

PRTA

+55.30%

GDYN

-51.54%

5Y(CAGR)

PRTA

-29.43%

Winner

GDYN

-19.76%

10Y(CAGR)

PRTA

-13.89%

GDYN

N/A

Max(CAGR)

Winner

PRTA

+1.61%

GDYN

-6.56%

PRTA vs GDYN - Annual Returns (2012 - 2026)

Returns include dividend reinvestment.

Year	PRTA	GDYN
2026	-2.93%	-35.90%
2025	-30.14%	-58.95%
2024	-64.06%	+69.64%
2023	-32.07%	+18.70%
2022	+22.41%	-71.53%
2021	+301.63%	+207.95%
2020	-23.16%	+16.24%
2019	+50.76%	+12.44%
2018	-72.75%	+1.89%
2017	-24.70%	N/A
2016	-20.94%	N/A
2015	+234.69%	N/A
2014	-26.12%	N/A
2013	+278.86%	N/A
2012	+1.81%	N/A

PRTA vs GDYN Drawdown Comparison

The maximum drawdown for PRTA was -94.19%, occurring on May 27, 2025. This drawdown has not yet recovered.

The maximum drawdown for GDYN was -87.45%, occurring on Apr 10, 2026. This drawdown has not yet recovered.

The current PRTA drawdown is -88.68%. The current GDYN drawdown is -86.55%.

Rank	PRTA	GDYN
#1	-94.19% Sep 23, 2021 - May 27, 2025	-87.45% Dec 27, 2021 - Apr 10, 2026
#2	-90.85% Nov 27, 2015 - Sep 10, 2021	-57.56% Feb 10, 2020 - Jan 22, 2021
#3	-64.27% Mar 20, 2014 - Jun 17, 2015	-20.22% Jun 24, 2021 - Jul 2, 2021
#4	-36.96% Jul 28, 2015 - Nov 18, 2015	-18.38% Sep 24, 2021 - Nov 5, 2021
#5	-20.33% Dec 31, 2012 - Apr 9, 2013	-14.65% Mar 22, 2021 - May 13, 2021
#6	-18.45% Jun 20, 2013 - Jul 12, 2013	-9.35% May 14, 2021 - Jun 14, 2021
#7	-17.61% Jan 30, 2014 - Feb 25, 2014	-9.33% Sep 7, 2021 - Sep 24, 2021
#8	-15.12% Dec 16, 2013 - Jan 29, 2014	-9.16% Aug 6, 2021 - Aug 23, 2021
#9	-14.72% Oct 2, 2013 - Oct 25, 2013	-8.94% Mar 1, 2021 - Mar 19, 2021
#10	-11.68% May 28, 2013 - Jun 7, 2013	-8.56% Jul 2, 2021 - Jul 30, 2021
#11	-10.76% Aug 2, 2013 - Aug 22, 2013	-7.81% Feb 9, 2021 - Feb 19, 2021
#12	-10.14% Jun 22, 2015 - Jul 14, 2015	-7.77% Dec 8, 2021 - Dec 22, 2021
#13	-7.65% Mar 12, 2014 - Mar 19, 2014	-6.99% Feb 24, 2021 - Mar 1, 2021
#14	-6.94% Aug 29, 2013 - Oct 2, 2013	-6.76% Nov 15, 2021 - Dec 8, 2021
#15	-6.73% Jul 22, 2015 - Jul 28, 2015	-4.50% Nov 15, 2018 - Jun 17, 2019