What is the current annual D&A of MRK?

As of today, MRK annual D&A is $5.84B

What is 1-year change in MRK annual D&A?

MRK annual D&A is up +29.76% year-over-year

What is 3-year change in MRK annual D&A?

MRK annual D&A is up +49.35% over the past 3 years

How far is MRK annual D&A from its all-time high?

MRK annual D&A is currently -21.39% below its historical high of $7.43B set on December 31, 2011

How does MRK annual D&A rank versus sector peers?

MRK annual D&A is higher than 99.63% of companies in Healthcare sector

When is MRK next annual earnings release?

The next annual earnings release for MRK is on February 2, 2027

What is the current quarterly D&A of MRK?

As of today, MRK quarterly D&A is $1.78B

What is MRK quarterly D&A most recent change?

MRK quarterly D&A was up +12.63% on September 30, 2026

What is 1-year change in MRK quarterly D&A?

MRK quarterly D&A is up +54.51% year-over-year

How far is MRK quarterly D&A from its all-time high?

MRK quarterly D&A is currently -27.70% below its historical high of $2.47B set on December 31, 2025

How does MRK quarterly D&A rank versus sector peers?

MRK quarterly D&A is higher than 99.69% of companies in Healthcare sector

When is MRK next earnings release?

The next earnings release for MRK is on February 2, 2027

What is the current TTM D&A of MRK?

As of today, MRK TTM D&A is $7.34B

What is MRK TTM D&A most recent change?

MRK TTM D&A was up +9.37% on September 30, 2026

What is 1-year change in MRK TTM D&A?

MRK TTM D&A is up +60.74% year-over-year

How far is MRK TTM D&A from its all-time high?

MRK TTM D&A is currently -2.40% below its historical high of $7.52B set on March 31, 2011

How does MRK TTM D&A rank versus sector peers?

MRK TTM D&A is higher than 99.69% of companies in Healthcare sector

When is MRK next earnings release?

The next earnings release for MRK is on February 2, 2027

MRK Depreciation And Amortization History & Chart Since 1980

Annual D&A

$5.84B$1.34B+29.76%

December 31, 2025

Summary

Current Value: As of today, MRK annual D&A is $5.84B, up +29.76% on December 31, 2025
Historical Performance: MRK annual D&A is up +49.35% over the past 3 years, up +67.47% over the past 5 years
All-Time High Comparison: MRK annual D&A is currently -21.39% below its historical high of $7.43B set on December 31, 2011
3-Year Low Comparison: MRK annual D&A is +50.77% above its 3-year low of $3.87B reached on December 31, 2023
Sector Comparison: MRK annual D&A is higher than 99.63% of companies in Healthcare sector

Depreciation & Amortization Chart

beforeafter

Performance

MRK Performance
Metric	Date	Value	1Y	3Y	5Y	15Y
Annual D&A	Dec 31, 25	$5.84B	+29.8%	+49.4%	+67.5%	-20.9%
Quarterly D&A	Sep 30, 26	$1.78B	+54.5%	+75.8%	+134.9%	-6.3%
TTM D&A	Sep 30, 26	$7.34B	+60.7%	+93.3%	+125.1%	-1.2%
Price	Nov 9, 26	$148.76	+72.4%	+45.3%	+79.8%	+361.4%
Annual SG&A	Dec 31, 25	$0.00	-100.0%	-100.0%	-100.0%	-100.0%
Annual Total Expenses	Dec 31, 25	$46.76B	-0.2%	+6.4%	+26.3%	+3.8%
Annual Operating Expenses	Dec 31, 25	$26.21B	-1.2%	+20.4%	+45.3%	+23.9%
Annual Revenue	Dec 31, 25	$64.93B	+1.5%	+11.0%	+56.3%	+41.4%

Depreciation & Amortization Highs

MRK Annual D&A Highs Comparison
Period	High	Date	Current
3Y	$5.84B	Dec 31, 25	at high
5Y	$5.84B	Dec 31, 25	at high
All	$7.43B	Dec 31, 11	-21.4%

Depreciation & Amortization Lows

MRK Annual D&A Lows Comparison
Period	Low	Date	Current
3Y	$3.87B	Dec 31, 23	+50.8%
5Y	$3.21B	Dec 31, 21	+81.6%
All	$91.29M	Dec 1, 80	+6295.1%

Depreciation & Amortization History

Year	Value	Change
2025	$5.84B	+29.8%
2024	$4.50B	+16.2%
2023	$3.87B	-0.9%
2022	$3.91B	+21.6%
2021	$3.21B	-7.8%
2020	$3.49B	-4.5%
2019	$3.65B	-19.2%
2018	$4.52B	-3.4%
2017	$4.68B	-14.1%
2016	$5.44B	-14.7%
2015	$6.38B	-4.7%
2014	$6.69B	-4.3%
2013	$6.99B	+0.1%
2012	$6.98B	-6.0%
2011	$7.43B	+0.6%
2010	$7.38B	+186.5%
2009	$2.58B	+57.9%
2008	$1.63B	-18.0%
2007	$1.99B	-12.4%
2006	$2.27B	+32.8%
2005	$1.71B	+17.7%
2004	$1.45B	+10.4%
2003	$1.31B	-11.7%

Year	Value	Change
2002	$1.49B	+1.7%
2001	$1.46B	+14.6%
2000	$1.28B	+11.6%
1999	$1.14B	+12.8%
1998	$1.02B	+21.3%
1997	$837.10M	+14.5%
1996	$730.90M	+9.5%
1995	$667.20M	-2.1%
1994	$681.60M	+76.4%
1993	$386.50M	+20.3%
1992	$321.40M	+21.8%
1991	$263.80M	+3.9%
1990	$254.00M	+14.6%
1989	$221.70M	+8.2%
1988	$204.90M	-2.4%
1987	$210.00M	+8.3%
1986	$193.90M	+6.2%
1985	$182.50M	+12.6%
1984	$162.11M	+8.5%
1983	$149.43M	+11.4%
1982	$134.18M	+27.8%
1981	$104.98M	+15.0%
1980	$91.29M	-

FAQ

What is the current annual D&A of MRK?: As of today, MRK annual D&A is $5.84B
What is 1-year change in MRK annual D&A?: MRK annual D&A is up +29.76% year-over-year
What is 3-year change in MRK annual D&A?: MRK annual D&A is up +49.35% over the past 3 years
How far is MRK annual D&A from its all-time high?: MRK annual D&A is currently -21.39% below its historical high of $7.43B set on December 31, 2011
How does MRK annual D&A rank versus sector peers?: MRK annual D&A is higher than 99.63% of companies in Healthcare sector
When is MRK next annual earnings release?: The next annual earnings release for MRK is on February 2, 2027

Quarterly D&A

$1.78B$200.00M+12.63%

September 30, 2026

Summary

Current Value: As of today, MRK quarterly D&A is $1.78B, up +12.63% on September 30, 2026
Historical Performance: MRK quarterly D&A is up +54.51% year-over-year, up +75.84% over the past 3 years
All-Time High Comparison: MRK quarterly D&A is currently -27.70% below its historical high of $2.47B set on December 31, 2025
3-Year Low Comparison: MRK quarterly D&A is +84.96% above its 3-year low of $964.00M reached on December 31, 2023
Sector Comparison: MRK quarterly D&A is higher than 99.69% of companies in Healthcare sector

Performance

MRK Performance
Metric	Date	Value	3M	1Y	3Y	5Y
Quarterly D&A	Sep 30, 26	$1.78B	+12.6%	+54.5%	+75.8%	+134.9%
Annual D&A	Dec 31, 25	$5.84B	–	+29.8%	+49.4%	+67.5%
TTM D&A	Sep 30, 26	$7.34B	+9.4%	+60.7%	+93.3%	+125.1%
Price	Nov 9, 26	$148.76	+15.7%	+72.4%	+45.3%	+79.8%
Quarterly SG&A	Sep 30, 26	$2.89B	-0.6%	+9.6%	+14.6%	+23.5%
Quarterly Total Expenses	Sep 30, 26	$13.06B	-27.1%	+14.6%	+15.9%	+52.8%
Quarterly Operating Expenses	Sep 30, 26	$5.61B	-49.2%	+1.4%	+5.1%	+17.6%
Quarterly Revenue	Sep 30, 26	$18.12B	+9.3%	+5.5%	+13.2%	+38.2%

Quarterly D&A Highs

MRK Quarterly D&A Highs Comparison
Period	High	Date	Current
1Y	$2.47B	Dec 31, 25	-27.7%
3Y	$2.47B	Dec 31, 25	-27.7%
5Y	$2.47B	Dec 31, 25	-27.7%
All	$2.47B	Dec 31, 25	-27.7%

Quarterly D&A Lows

MRK Quarterly D&A Lows Comparison
Period	Low	Date	Current
1Y	$1.15B	N/A	+54.5%
3Y	$964.00M	Dec 31, 23	+85.0%
5Y	$759.00M	N/A	+134.9%
All	-$132.00M	Sep 30, 91	+1450.8%

Quarterly D&A History

Month	Value	Change
Sep 2026	$1.78B	+12.6%
Jun 2026	$1.58B	+4.7%
Mar 2026	$1.51B	-38.7%
Dec 2025	$2.47B	+113.7%
Sep 2025	$1.15B	+3.1%
Jun 2025	$1.12B	+1.8%
Mar 2025	$1.10B	-8.2%
Dec 2024	$1.20B	+0.9%
Sep 2024	$1.19B	+4.8%
Jun 2024	$1.13B	+15.0%
Mar 2024	$984.00M	+2.1%
Dec 2023	$964.00M	-4.9%
Sep 2023	$1.01B	+12.3%
Jun 2023	$903.00M	-8.9%
Mar 2023	$991.00M	+11.1%
Dec 2022	$892.00M	-7.0%
Sep 2022	$959.00M	+2.2%
Jun 2022	$938.00M	-16.3%
Mar 2022	$1.12B	+34.1%
Dec 2021	$835.00M	+10.0%
Sep 2021	$759.00M	+4.3%
Jun 2021	$728.00M	-18.4%
Mar 2021	$892.00M	+1.0%
Dec 2020	$883.00M	+9.4%
Sep 2020	$807.00M	-17.2%
Jun 2020	$975.00M	+18.8%
Mar 2020	$821.00M	-12.3%
Dec 2019	$936.00M	+10.8%
Sep 2019	$845.00M	-13.2%
Jun 2019	$973.00M	+8.4%
Mar 2019	$898.00M	-18.0%
Dec 2018	$1.10B	+3.2%
Sep 2018	$1.06B	-13.5%
Jun 2018	$1.23B	+7.8%
Mar 2018	$1.14B	-2.6%
Dec 2017	$1.17B	+1.1%
Sep 2017	$1.15B	-0.7%
Jun 2017	$1.16B	-2.6%
Mar 2017	$1.19B	+3.3%
Dec 2016	$1.16B	-1.7%
Sep 2016	$1.18B	-24.2%
Jun 2016	$1.55B	-0.7%
Mar 2016	$1.56B	+0.1%
Dec 2015	$1.56B	-0.6%
Sep 2015	$1.57B	-2.4%
Jun 2015	$1.61B	-1.8%
Mar 2015	$1.64B	+4.1%
Dec 2014	$1.57B	-2.4%
Sep 2014	$1.61B	-8.1%
Jun 2014	$1.75B	-0.1%
Mar 2014	$1.75B	-10.2%
Dec 2013	$1.95B	+14.6%
Sep 2013	$1.71B	+3.0%
Jun 2013	$1.66B	-1.1%
Mar 2013	$1.67B	+0.8%
Dec 2012	$1.66B	-3.6%
Sep 2012	$1.72B	-4.5%
Jun 2012	$1.80B	+0.8%
Mar 2012	$1.79B	-3.8%
Dec 2011	$1.86B	-2.2%
Sep 2011	$1.90B	+3.9%
Jun 2011	$1.83B	+0.1%
Mar 2011	$1.83B	-1.9%
Dec 2010	$1.87B	-0.7%
Sep 2010	$1.88B	-3.5%
Jun 2010	$1.95B	+15.4%
Mar 2010	$1.69B	+35.0%
Dec 2009	$1.25B	+217.4%

Month	Value	Change
Sep 2009	$393.70M	-19.5%
Jun 2009	$489.30M	+10.4%
Mar 2009	$443.30M	-6.5%
Dec 2008	$474.00M	+21.2%
Sep 2008	$391.20M	+4.3%
Jun 2008	$374.90M	-4.1%
Mar 2008	$391.10M	-21.6%
Dec 2007	$499.00M	+2.1%
Sep 2007	$488.70M	-2.3%
Jun 2007	$500.10M	-0.1%
Mar 2007	$500.40M	-7.8%
Dec 2006	$543.00M	-3.6%
Sep 2006	$563.30M	+4.6%
Jun 2006	$538.70M	-13.6%
Mar 2006	$623.40M	+23.2%
Dec 2005	$505.90M	+19.6%
Sep 2005	$423.10M	+6.0%
Jun 2005	$399.30M	+5.1%
Mar 2005	$379.80M	-4.9%
Dec 2004	$399.40M	+13.9%
Sep 2004	$350.80M	-0.4%
Jun 2004	$352.30M	+1.2%
Mar 2004	$348.20M	+8.6%
Dec 2003	$320.60M	+70.8%
Sep 2003	$187.70M	-54.7%
Jun 2003	$414.20M	+5.7%
Mar 2003	$391.70M	+2.2%
Dec 2002	$383.10M	+1.3%
Sep 2002	$378.00M	+3.5%
Jun 2002	$365.10M	+0.8%
Mar 2002	$362.10M	-2.6%
Dec 2001	$371.70M	+0.9%
Sep 2001	$368.50M	+1.4%
Jun 2001	$363.40M	+0.9%
Mar 2001	$360.20M	+14.1%
Dec 2000	$315.70M	-2.2%
Sep 2000	$322.80M	+1.2%
Jun 2000	$318.90M	-0.3%
Mar 2000	$319.90M	+13.3%
Dec 1999	$282.30M	-1.1%
Sep 1999	$285.30M	-2.4%
Jun 1999	$292.30M	+2.6%
Mar 1999	$284.90M	+13.0%
Dec 1998	$252.10M	-62.2%
Sep 1998	$666.50M	+1,282.8%
Jun 1998	$48.20M	-0.2%
Mar 1998	$48.30M	-93.0%
Dec 1997	$692.50M	+1,327.8%
Sep 1997	$48.50M	+0.4%
Jun 1997	$48.30M	+1.0%
Mar 1997	$47.80M	-93.9%
Dec 1996	$782.90M	+1,465.8%
Sep 1996	$50.00M	+5.9%
Jun 1996	$47.20M	+0.4%
Mar 1996	$47.00M	-93.4%
Dec 1995	$716.30M	+1,401.7%
Sep 1995	$47.70M	+0.6%
Jun 1995	$47.40M	-0.8%
Mar 1995	$47.80M	-93.6%
Dec 1994	$743.60M	+1,563.5%
Sep 1994	$44.70M	+1.8%
Jun 1994	$43.90M	+1.4%
Mar 1994	$43.30M	-83.6%
Dec 1991	$263.80M	+299.8%
Sep 1991	-$132.00M	-300.0%
Jun 1991	$66.00M	0.0%
Mar 1991	$66.00M	-

FAQ

What is the current quarterly D&A of MRK?: As of today, MRK quarterly D&A is $1.78B
What is MRK quarterly D&A most recent change?: MRK quarterly D&A was up +12.63% on September 30, 2026
What is 1-year change in MRK quarterly D&A?: MRK quarterly D&A is up +54.51% year-over-year
How far is MRK quarterly D&A from its all-time high?: MRK quarterly D&A is currently -27.70% below its historical high of $2.47B set on December 31, 2025
How does MRK quarterly D&A rank versus sector peers?: MRK quarterly D&A is higher than 99.69% of companies in Healthcare sector
When is MRK next earnings release?: The next earnings release for MRK is on February 2, 2027

TTM D&A

$7.34B$629.00M+9.37%

September 30, 2026

Summary

Current Value: As of today, MRK TTM D&A is $7.34B, up +9.37% on September 30, 2026
Historical Performance: MRK TTM D&A is up +60.74% year-over-year, up +93.26% over the past 3 years
All-Time High Comparison: MRK TTM D&A is currently -2.40% below its historical high of $7.52B set on March 31, 2011
3-Year Low Comparison: MRK TTM D&A is +93.26% above its 3-year low of $3.80B reached on an earlier date
Sector Comparison: MRK TTM D&A is higher than 99.69% of companies in Healthcare sector

Performance

MRK Performance
Metric	Date	Value	3M	1Y	3Y	5Y
TTM D&A	Sep 30, 26	$7.34B	+9.4%	+60.7%	+93.3%	+125.1%
Annual D&A	Dec 31, 25	$5.84B	–	+29.8%	+49.4%	+67.5%
Quarterly D&A	Sep 30, 26	$1.78B	+12.6%	+54.5%	+75.8%	+134.9%
Price	Nov 9, 26	$148.76	+15.7%	+72.4%	+45.3%	+79.8%
TTM SG&A	Sep 30, 26	$269.29B	+2318.4%	+2417.2%	+2492.6%	+2757.8%
TTM Revenue	Sep 30, 26	$67.23B	+1.4%	+5.2%	+15.6%	+46.5%

TTM D&A Highs

MRK TTM D&A Highs Comparison
Period	High	Date	Current
1Y	$7.34B	Sep 30, 26	at high
3Y	$7.34B	Sep 30, 26	at high
5Y	$7.34B	Sep 30, 26	at high
All	$7.52B	Mar 31, 11	-2.4%

TTM D&A Lows

MRK TTM D&A Lows Comparison
Period	Low	Date	Current
1Y	$4.57B	N/A	+60.7%
3Y	$3.80B	N/A	+93.3%
5Y	$3.21B	Dec 31, 21	+128.5%
All	$0.00	Sep 30, 91	N/A

TTM D&A History

Month	Value	Change
Sep 2026	$7.34B	+9.4%
Jun 2026	$6.72B	+7.4%
Mar 2026	$6.25B	+7.1%
Dec 2025	$5.84B	+27.8%
Sep 2025	$4.57B	-0.7%
Jun 2025	$4.60B	-0.3%
Mar 2025	$4.61B	+2.6%
Dec 2024	$4.50B	+5.5%
Sep 2024	$4.27B	+4.2%
Jun 2024	$4.09B	+5.9%
Mar 2024	$3.87B	-0.2%
Dec 2023	$3.87B	+1.9%
Sep 2023	$3.80B	+1.5%
Jun 2023	$3.75B	-0.9%
Mar 2023	$3.78B	-3.3%
Dec 2022	$3.91B	+1.5%
Sep 2022	$3.85B	+5.5%
Jun 2022	$3.65B	+6.1%
Mar 2022	$3.44B	+7.1%
Dec 2021	$3.21B	-1.5%
Sep 2021	$3.26B	-1.5%
Jun 2021	$3.31B	-6.9%
Mar 2021	$3.56B	+2.0%
Dec 2020	$3.49B	-1.5%
Sep 2020	$3.54B	-1.1%
Jun 2020	$3.58B	+0.1%
Mar 2020	$3.58B	-2.1%
Dec 2019	$3.65B	-4.2%
Sep 2019	$3.81B	-5.4%
Jun 2019	$4.03B	-5.9%
Mar 2019	$4.28B	-5.3%
Dec 2018	$4.52B	-1.6%
Sep 2018	$4.59B	-2.0%
Jun 2018	$4.68B	+1.4%
Mar 2018	$4.62B	-1.2%
Dec 2017	$4.68B	+0.3%
Sep 2017	$4.66B	-0.4%
Jun 2017	$4.69B	-7.6%
Mar 2017	$5.07B	-6.8%
Dec 2016	$5.44B	-6.9%
Sep 2016	$5.85B	-6.3%
Jun 2016	$6.24B	-0.9%
Mar 2016	$6.30B	-1.2%
Dec 2015	$6.38B	-0.2%
Sep 2015	$6.39B	-0.6%
Jun 2015	$6.43B	-2.2%
Mar 2015	$6.57B	-1.7%
Dec 2014	$6.69B	-5.4%
Sep 2014	$7.07B	-1.3%
Jun 2014	$7.17B	+1.4%
Mar 2014	$7.07B	+1.1%
Dec 2013	$6.99B	+4.4%
Sep 2013	$6.70B	-0.3%
Jun 2013	$6.71B	-2.2%
Mar 2013	$6.86B	-1.7%
Dec 2012	$6.98B	-2.8%
Sep 2012	$7.18B	-2.4%
Jun 2012	$7.36B	-0.4%
Mar 2012	$7.39B	-0.6%
Dec 2011	$7.43B	-0.1%
Sep 2011	$7.43B	+0.3%
Jun 2011	$7.41B	-1.5%
Mar 2011	$7.52B	+1.9%
Dec 2010	$7.38B	+9.1%
Sep 2010	$6.76B	+28.2%
Jun 2010	$5.28B	+38.2%
Mar 2010	$3.82B	+48.3%
Dec 2009	$2.58B	+43.1%

Month	Value	Change
Sep 2009	$1.80B	+0.1%
Jun 2009	$1.80B	+6.8%
Mar 2009	$1.68B	+3.2%
Dec 2008	$1.63B	-1.5%
Sep 2008	$1.66B	-5.6%
Jun 2008	$1.75B	-6.7%
Mar 2008	$1.88B	-5.5%
Dec 2007	$1.99B	-2.2%
Sep 2007	$2.03B	-3.5%
Jun 2007	$2.11B	-1.8%
Mar 2007	$2.15B	-5.4%
Dec 2006	$2.27B	+1.7%
Sep 2006	$2.23B	+6.7%
Jun 2006	$2.09B	+7.1%
Mar 2006	$1.95B	+14.3%
Dec 2005	$1.71B	+6.6%
Sep 2005	$1.60B	+4.7%
Jun 2005	$1.53B	+3.2%
Mar 2005	$1.48B	+2.2%
Dec 2004	$1.45B	+5.7%
Sep 2004	$1.37B	+13.5%
Jun 2004	$1.21B	-4.9%
Mar 2004	$1.27B	-3.3%
Dec 2003	$1.31B	-4.5%
Sep 2003	$1.38B	-12.1%
Jun 2003	$1.57B	+3.2%
Mar 2003	$1.52B	+2.0%
Dec 2002	$1.49B	+0.8%
Sep 2002	$1.48B	+0.6%
Jun 2002	$1.47B	+0.1%
Mar 2002	$1.47B	+0.1%
Dec 2001	$1.46B	+4.0%
Sep 2001	$1.41B	+3.4%
Jun 2001	$1.36B	+3.4%
Mar 2001	$1.32B	+3.2%
Dec 2000	$1.28B	+2.7%
Sep 2000	$1.24B	+3.1%
Jun 2000	$1.21B	+2.3%
Mar 2000	$1.18B	+3.1%
Dec 1999	$1.14B	+2.7%
Sep 1999	$1.11B	-25.5%
Jun 1999	$1.50B	+19.5%
Mar 1999	$1.25B	+23.3%
Dec 1998	$1.02B	-30.3%
Sep 1998	$1.46B	+73.8%
Jun 1998	$837.50M	-0.0%
Mar 1998	$837.60M	+0.1%
Dec 1997	$837.10M	-9.7%
Sep 1997	$927.50M	-0.2%
Jun 1997	$929.00M	+0.1%
Mar 1997	$927.90M	+0.1%
Dec 1996	$927.10M	+7.7%
Sep 1996	$860.50M	+0.3%
Jun 1996	$858.20M	-0.0%
Mar 1996	$858.40M	-0.1%
Dec 1995	$859.20M	-3.1%
Sep 1995	$886.50M	+0.3%
Jun 1995	$883.50M	+0.4%
Mar 1995	$880.00M	+0.5%
Dec 1994	$875.50M	+563.8%
Sep 1994	$131.90M	+51.3%
Jun 1994	$87.20M	+101.4%
Mar 1994	$43.30M	-83.6%
Dec 1991	$263.80M	>+9,900.0%
Sep 1991	$0.00	-100.0%
Jun 1991	$132.00M	+100.0%
Mar 1991	$66.00M	-

FAQ

What is the current TTM D&A of MRK?: As of today, MRK TTM D&A is $7.34B
What is MRK TTM D&A most recent change?: MRK TTM D&A was up +9.37% on September 30, 2026
What is 1-year change in MRK TTM D&A?: MRK TTM D&A is up +60.74% year-over-year
How far is MRK TTM D&A from its all-time high?: MRK TTM D&A is currently -2.40% below its historical high of $7.52B set on March 31, 2011
How does MRK TTM D&A rank versus sector peers?: MRK TTM D&A is higher than 99.69% of companies in Healthcare sector
When is MRK next earnings release?: The next earnings release for MRK is on February 2, 2027

Data Sources & References

MRK Official Website www.merck.com
MRK Profile on Yahoo Finance finance.yahoo.com/quote/MRK
MRK Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/mrk