AMWL vs MACK

Comparison between American Well Corporation - Class A (AMWL, Company) and Merrimack Pharmaceuticals Inc (MACK, Company).

5-Year PerformanceMACK has outperformed AMWL, delivering a return of +54.2% compared to -43.4%

AMWL vs MACK - Performance Comparison

Log

Key Characteristics

Financial metrics and valuation ratios

Metric	AMWL(COMPANY)	MACK(COMPANY)
Market Cap	$218M	$219M
Max Drawdown	99.56%	98.48%
Sharpe Ratio	1.08	1.14
5Y Beta	1.24	N/A
Industry	Health Information Services	N/A
P/E Ratio	-2.72	1.09
Debt to Equity	0.00%	0.00%
Free Cash Flow Yield	-12.12%	-0.76%
P/S Ratio	0.93	4.80
P/B Ratio	0.79	0.99

Market Cap

AMWL

$218M

Winner

MACK

$219M

Max Drawdown

AMWL

99.56%

Winner

MACK

98.48%

Sharpe Ratio

AMWL

1.08

Winner

MACK

1.14

5Y Beta

AMWL

1.24

MACK

N/A

Industry

AMWL

Health Information Services

MACK

N/A

P/E Ratio

Winner

AMWL

-2.72

MACK

1.09

Debt to Equity

AMWL

0.00%

MACK

0.00%

Free Cash Flow Yield

AMWL

-12.12%

Winner

MACK

-0.76%

P/S Ratio

Winner

AMWL

0.93

MACK

4.80

P/B Ratio

Winner

AMWL

0.79

MACK

0.99

AMWL vs MACK - Historical Returns

Returns include dividend reinvestment.

Period	AMWL	MACK
1 month	+13.81%	+105.09%
3 months	+58.81%	+105.65%
6 months	+189.38%	+136.54%
1 year	+77.48%	+141.84%
5 years(CAGR)	-43.37%	+54.25%
10 years(CAGR)	N/A	-0.15%
Max(CAGR)	-45.73%	+2.29%

AMWL

+13.81%

Winner

MACK

+105.09%

AMWL

+58.81%

Winner

MACK

+105.65%

Winner

AMWL

+189.38%

MACK

+136.54%

AMWL

+77.48%

Winner

MACK

+141.84%

5Y(CAGR)

AMWL

-43.37%

Winner

MACK

+54.25%

10Y(CAGR)

AMWL

N/A

MACK

-0.15%

Max(CAGR)

AMWL

-45.73%

Winner

MACK

+2.29%

AMWL vs MACK - Annual Returns (2012 - 2026)

Returns include dividend reinvestment.

Year	AMWL	MACK
2026	+158.35%	N/A
2025	-30.26%	N/A
2024	-75.00%	+127.12%
2023	-47.16%	+15.11%
2022	-54.28%	+188.66%
2021	-76.36%	-43.25%
2020	+9.80%	+115.99%
2019	N/A	+41.31%
2018	N/A	-63.76%
2017	N/A	-62.97%
2016	N/A	-47.29%
2015	N/A	-30.88%
2014	N/A	+102.15%
2013	N/A	-14.43%
2012	N/A	+0.83%

AMWL vs MACK Drawdown Comparison

The maximum drawdown for AMWL was -99.56%, occurring on Nov 20, 2025. This drawdown has not yet recovered.

The maximum drawdown for MACK was -96.86%, occurring on Mar 20, 2020. This drawdown has not yet recovered.

The current AMWL drawdown is -98.54%. The current MACK drawdown is -41.79%.

Rank	AMWL	MACK
#1	-99.56% Jan 27, 2021 - Nov 20, 2025	-96.86% Apr 23, 2015 - Mar 20, 2020
#2	-44.09% Oct 7, 2020 - Jan 27, 2021	-81.19% Sep 24, 2012 - Dec 19, 2014
#3	-4.28% Sep 30, 2020 - Oct 5, 2020	-34.60% Apr 19, 2012 - Jul 25, 2012
#4	-2.74% Sep 23, 2020 - Sep 30, 2020	-25.91% Jan 8, 2015 - Mar 5, 2015
#5	-1.17% Sep 17, 2020 - Sep 22, 2020	-16.57% Jul 25, 2012 - Sep 19, 2012
#6	N/A	-10.82% Mar 5, 2015 - Apr 13, 2015
#7	N/A	-4.44% Dec 19, 2014 - Dec 26, 2014
#8	N/A	-4.36% Apr 16, 2015 - Apr 22, 2015
#9	N/A	-3.07% Mar 30, 2012 - Apr 9, 2012
#10	N/A	-2.66% Jan 5, 2015 - Jan 8, 2015
#11	N/A	-1.16% Dec 29, 2014 - Dec 31, 2014
#12	N/A	-0.86% Apr 12, 2012 - Apr 16, 2012
#13	N/A	-0.70% Apr 13, 2015 - Apr 15, 2015

Correlation

Correlation between AMWL and MACK is -0.47 which considered as a weak negative correlation - the stocks show a slight tendency to move in opposite directions.

-0.47

-101