What is the current annual operating margin of MRK?

As of today, MRK annual operating margin is 41.19%

What is 1-year change in MRK annual operating margin?

MRK annual operating margin is up +27.64% year-over-year

What is 3-year change in MRK annual operating margin?

MRK annual operating margin is up +23.51% over the past 3 years

How far is MRK annual operating margin from its all-time high?

MRK annual operating margin is currently -11.38% below its historical high of 46.48% set on December 31, 1992

How does MRK annual operating margin rank versus sector peers?

MRK annual operating margin is higher than 97.66% of companies in Healthcare sector

When is MRK next annual earnings release?

As of today, the next annual earnings release for MRK has not been scheduled

What is the current quarterly operating margin of MRK?

As of today, MRK quarterly operating margin is -12.16%

What is MRK quarterly operating margin most recent change?

MRK quarterly operating margin was down -132.22% on March 31, 2026

What is 1-year change in MRK quarterly operating margin?

MRK quarterly operating margin is down -128.31% year-over-year

How far is MRK quarterly operating margin from its all-time high?

MRK quarterly operating margin is currently -120.54% below its historical high of 59.20% set on December 31, 1993

How does MRK quarterly operating margin rank versus sector peers?

MRK quarterly operating margin is higher than 53.99% of companies in Healthcare sector

When is MRK next earnings release?

The next earnings release for MRK is on August 4, 2026

MRK Operating Margin History & Chart Since 1980

Annual Operating Margin

41.19%8.92%+27.64%

December 31, 2025

Summary

Current Value: As of today, MRK annual operating margin is 41.19%, up +27.64% on December 31, 2025
Historical Performance: MRK annual operating margin is up +23.51% over the past 3 years, up +70.07% over the past 5 years
All-Time High Comparison: MRK annual operating margin is currently -11.38% below its historical high of 46.48% set on December 31, 1992
3-Year Low Comparison: MRK annual operating margin is +727.11% above its 3-year low of 4.98% reached on December 31, 2023
Sector Comparison: MRK annual operating margin is higher than 97.66% of companies in Healthcare sector

Operating Margin Chart

beforeafter

Performance

MRK Performance
Metric	Date	Value	1Y	3Y	5Y	15Y
Annual Operating Margin	Dec 31, 25	41.19%	+27.6%	+23.5%	+70.1%	+179.3%
Quarterly Operating Margin	Mar 31, 26	-12.16%	-128.3%	-145.1%	-146.4%	-151.5%
Price	Jul 31, 26	$130.20	+66.7%	+22.1%	+69.4%	+299.8%
PE Ratio	Jul 31, 26	36.64	+204.3%	-58.3%	+4.4%	+4.6%
Annual Revenue	Dec 31, 25	$64.93B	+1.5%	+11.0%	+56.3%	+41.4%
Annual Operating Profit	Dec 31, 25	$26.78B	+29.7%	+37.3%	+166.2%	+295.4%
Annual Gross Margin	Dec 31, 25	81.50%	+10.5%	+15.5%	+20.5%	+34.0%
Annual Net Margin	Dec 31, 25	28.09%	+4.9%	+13.1%	+157.9%	+1218.8%

Operating Margin Highs

MRK Annual Operating Margin Highs Comparison
Period	High	Date	Current
3Y	41.19%	Dec 31, 25	at high
5Y	41.19%	Dec 31, 25	at high
All	46.48%	Dec 31, 92	-11.4%

Operating Margin Lows

MRK Annual Operating Margin Lows Comparison
Period	Low	Date	Current
3Y	4.98%	Dec 31, 23	+727.1%
5Y	4.98%	Dec 31, 23	+727.1%
All	4.98%	Dec 31, 23	+727.1%

Operating Margin History

Year	Value	Change
2025	41.19%	+27.6%
2024	32.27%	+548.0%
2023	4.98%	-85.1%
2022	33.35%	+4.4%
2021	31.94%	+31.9%
2020	24.22%	-16.3%
2019	28.94%	+26.9%
2018	22.81%	+24.1%
2017	18.38%	-30.8%
2016	26.56%	+38.5%
2015	19.18%	-12.1%
2014	21.83%	+3.4%
2013	21.12%	-8.7%
2012	23.14%	+3.2%
2011	22.42%	+52.0%
2010	14.75%	-15.4%
2009	17.44%	-34.8%
2008	26.74%	+8.4%
2007	24.67%	+5.6%
2006	23.37%	-15.0%
2005	27.51%	-16.9%
2004	33.12%	-13.9%
2003	38.48%	+106.1%

Year	Value	Change
2002	18.67%	-8.4%
2001	20.39%	-9.5%
2000	22.52%	-3.0%
1999	23.21%	-2.1%
1998	23.70%	-1.1%
1997	23.97%	-4.7%
1996	25.14%	-4.8%
1995	26.40%	-10.1%
1994	29.38%	-20.6%
1993	37.01%	-20.4%
1992	46.48%	+28.6%
1991	36.15%	+4.6%
1990	34.56%	+1.2%
1989	34.14%	+8.6%
1988	31.43%	+16.2%
1987	27.05%	+7.3%
1986	25.22%	+6.5%
1985	23.67%	+5.8%
1984	22.38%	+0.7%
1983	22.23%	+8.3%
1982	20.52%	+1.7%
1981	20.17%	-16.3%
1980	24.11%	-

FAQ

What is the current annual operating margin of MRK?: As of today, MRK annual operating margin is 41.19%
What is 1-year change in MRK annual operating margin?: MRK annual operating margin is up +27.64% year-over-year
What is 3-year change in MRK annual operating margin?: MRK annual operating margin is up +23.51% over the past 3 years
How far is MRK annual operating margin from its all-time high?: MRK annual operating margin is currently -11.38% below its historical high of 46.48% set on December 31, 1992
How does MRK annual operating margin rank versus sector peers?: MRK annual operating margin is higher than 97.66% of companies in Healthcare sector
When is MRK next annual earnings release?: As of today, the next annual earnings release for MRK has not been scheduled

Operating Margin Formula

Operating Profit Margin = Operating Income

Revenue × 100%

Quarterly Operating Margin

-12.16%49.90%-132.22%

March 31, 2026

Summary

Current Value: As of today, MRK quarterly operating margin is -12.16%, down -132.22% on March 31, 2026
Historical Performance: MRK quarterly operating margin is down -128.31% year-over-year, down -145.07% over the past 3 years
All-Time High Comparison: MRK quarterly operating margin is currently -120.54% below its historical high of 59.20% set on December 31, 1993
3-Year Low Comparison: MRK quarterly operating margin is +62.60% above its 3-year low of -32.51% reached on an earlier date
Sector Comparison: MRK quarterly operating margin is higher than 53.99% of companies in Healthcare sector

Performance

MRK Performance
Metric	Date	Value	3M	1Y	3Y	5Y
Quarterly Operating Margin	Mar 31, 26	-12.16%	-132.2%	-128.3%	-145.1%	-146.4%
Annual Operating Margin	Dec 31, 25	41.19%	–	+27.6%	+23.5%	+70.1%
Price	Jul 31, 26	$130.20	+19.3%	+66.7%	+22.1%	+69.4%
PE Ratio	Jul 31, 26	36.64	+19.2%	+204.3%	-58.3%	+4.4%
Quarterly Revenue	Mar 31, 26	$16.20B	-0.8%	+3.7%	+11.1%	+54.0%
Quarterly Operating Profit	Mar 31, 26	-$1.88B	-130.6%	-128.1%	-147.9%	-168.3%
Quarterly Gross Margin	Mar 31, 26	71.98%	+2.1%	-4.2%	+2.5%	+3.0%
Quarterly Net Margin	Mar 31, 26	-26.05%	-243.5%	-180.0%	-234.5%	-199.7%

Quarterly Operating Margin Highs

MRK Quarterly Operating Margin Highs Comparison
Period	High	Date	Current
1Y	43.43%	Sep 30, 25	-128.0%
3Y	43.43%	Sep 30, 25	-128.0%
5Y	43.43%	Sep 30, 25	-128.0%
All	59.20%	Dec 31, 93	-120.5%

Quarterly Operating Margin Lows

MRK Quarterly Operating Margin Lows Comparison
Period	Low	Date	Current
1Y	-12.16%	Mar 31, 26	at low
3Y	-32.51%	N/A	+62.6%
5Y	-32.51%	Jun 30, 23	+62.6%
All	-187.21%	Dec 1, 84	+93.5%

Quarterly Operating Margin History

Month	Value	Change
Mar 2026	-12.16%	-132.2%
Dec 2025	37.74%	-13.1%
Sep 2025	43.43%	+7.9%
Jun 2025	40.25%	-6.3%
Mar 2025	42.96%	+34.3%
Dec 2024	32.00%	+25.4%
Sep 2024	25.52%	-34.2%
Jun 2024	38.80%	+3.7%
Mar 2024	37.43%	+368.1%
Dec 2023	-13.96%	-137.3%
Sep 2023	37.42%	+215.1%
Jun 2023	-32.51%	-220.5%
Mar 2023	26.98%	+11.7%
Dec 2022	24.15%	-31.1%
Sep 2022	35.04%	-3.8%
Jun 2022	36.42%	+0.9%
Mar 2022	36.10%	+10.8%
Dec 2021	32.58%	-13.6%
Sep 2021	37.70%	+26.3%
Jun 2021	29.84%	+13.8%
Mar 2021	26.22%	+227.3%
Dec 2020	8.01%	-74.3%
Sep 2020	31.22%	+18.0%
Jun 2020	26.46%	-21.7%
Mar 2020	33.80%	+33.9%
Dec 2019	25.25%	-13.1%
Sep 2019	29.04%	-2.5%
Jun 2019	29.79%	-6.7%
Mar 2019	31.94%	+16.8%
Dec 2018	27.35%	+10.7%
Sep 2018	24.70%	+18.8%
Jun 2018	20.80%	+67.5%
Mar 2018	12.42%	-50.3%
Dec 2017	24.97%	+535.4%
Sep 2017	3.93%	-84.6%
Jun 2017	25.55%	+3.0%
Mar 2017	24.81%	-23.9%
Dec 2016	32.61%	+10.7%
Sep 2016	29.47%	+35.6%
Jun 2016	21.74%	-1.0%
Mar 2016	21.97%	+47.4%
Dec 2015	14.90%	-35.9%
Sep 2015	23.24%	+17.8%
Jun 2015	19.73%	+1.9%
Mar 2015	19.37%	+20.1%
Dec 2014	16.13%	-52.3%
Sep 2014	33.81%	+57.3%
Jun 2014	21.50%	-3.9%
Mar 2014	22.37%	+1.1%
Dec 2013	22.13%	-6.5%
Sep 2013	23.66%	+18.5%
Jun 2013	19.97%	+8.5%
Mar 2013	18.40%	-1.9%
Dec 2012	18.76%	-16.8%
Sep 2012	22.54%	-12.9%
Jun 2012	25.88%	+2.7%
Mar 2012	25.21%	+21.8%
Dec 2011	20.69%	-6.9%
Sep 2011	22.22%	-4.2%
Jun 2011	23.20%	-1.8%
Mar 2011	23.63%	+41.7%
Dec 2010	16.68%	-5.1%
Sep 2010	17.58%	+6.4%
Jun 2010	16.53%	+64.6%
Mar 2010	10.04%	+1,868.6%
Dec 2009	0.51%	-98.2%
Sep 2009	29.10%	+9.4%
Jun 2009	26.61%	+9.8%
Mar 2009	24.24%	+1.2%
Dec 2008	23.95%	-13.9%
Sep 2008	27.83%	+7.2%
Jun 2008	25.97%	-11.4%
Mar 2008	29.31%	+45.3%
Dec 2007	20.17%	-15.7%
Sep 2007	23.93%	-13.9%
Jun 2007	27.79%	-3.0%

Month	Value	Change
Mar 2007	28.65%	+84.6%
Dec 2006	15.52%	+12.0%
Sep 2006	13.86%	-57.5%
Jun 2006	32.64%	+5.7%
Mar 2006	30.88%	+34.3%
Dec 2005	22.99%	-16.6%
Sep 2005	27.58%	-6.0%
Jun 2005	29.35%	-3.5%
Mar 2005	30.41%	+8.6%
Dec 2004	28.01%	+1.0%
Sep 2004	27.74%	-13.7%
Jun 2004	32.15%	-10.8%
Mar 2004	36.04%	+6.5%
Dec 2003	33.85%	-19.9%
Sep 2003	42.24%	+149.4%
Jun 2003	16.94%	-7.8%
Mar 2003	18.38%	+2.6%
Dec 2002	17.91%	-10.3%
Sep 2002	19.96%	+8.5%
Jun 2002	18.40%	+2.1%
Mar 2002	18.02%	-2.2%
Dec 2001	18.42%	-19.3%
Sep 2001	22.83%	+10.9%
Jun 2001	20.59%	+7.9%
Mar 2001	19.08%	-11.0%
Dec 2000	21.45%	-9.1%
Sep 2000	23.59%	-6.0%
Jun 2000	25.10%	+6.9%
Mar 2000	23.47%	+17.8%
Dec 1999	19.92%	-20.0%
Sep 1999	24.90%	+0.8%
Jun 1999	24.71%	+4.3%
Mar 1999	23.70%	-32.2%
Dec 1998	34.95%	+233.2%
Sep 1998	10.49%	-57.2%
Jun 1998	24.53%	+6.8%
Mar 1998	22.96%	-14.2%
Dec 1997	26.77%	+12.1%
Sep 1997	23.87%	-4.4%
Jun 1997	24.98%	+6.6%
Mar 1997	23.43%	-3.9%
Dec 1996	24.38%	-6.3%
Sep 1996	26.01%	-0.6%
Jun 1996	26.16%	+9.1%
Mar 1996	23.98%	+0.3%
Dec 1995	23.92%	-14.4%
Sep 1995	27.94%	-0.6%
Jun 1995	28.12%	+9.0%
Mar 1995	25.81%	-4.3%
Dec 1994	26.96%	-12.4%
Sep 1994	30.76%	-2.9%
Jun 1994	31.69%	+12.1%
Mar 1994	28.26%	-52.3%
Dec 1993	59.20%	+49.6%
Sep 1993	39.56%	+379.5%
Jun 1993	8.25%	-77.9%
Mar 1993	37.41%	+16.6%
Dec 1992	32.08%	-11.5%
Sep 1992	36.23%	-7.7%
Jun 1992	39.25%	+4.8%
Mar 1992	37.45%	+10.5%
Dec 1991	33.90%	-9.2%
Sep 1991	37.33%	-2.7%
Jun 1991	38.37%	+9.1%
Mar 1991	35.17%	+8.9%
Dec 1990	32.30%	-8.2%
Sep 1990	35.20%	-4.1%
Jun 1990	36.69%	+7.0%
Mar 1990	34.28%	+9.3%
Dec 1989	31.37%	-11.6%
Sep 1989	35.50%	+121.5%
Dec 1988	-165.48%	-0.4%
Dec 1987	-164.78%	+2.3%
Dec 1986	-168.71%	+7.6%
Dec 1985	-182.64%	+2.4%
Dec 1984	-187.21%	-

FAQ

What is the current quarterly operating margin of MRK?: As of today, MRK quarterly operating margin is -12.16%
What is MRK quarterly operating margin most recent change?: MRK quarterly operating margin was down -132.22% on March 31, 2026
What is 1-year change in MRK quarterly operating margin?: MRK quarterly operating margin is down -128.31% year-over-year
How far is MRK quarterly operating margin from its all-time high?: MRK quarterly operating margin is currently -120.54% below its historical high of 59.20% set on December 31, 1993
How does MRK quarterly operating margin rank versus sector peers?: MRK quarterly operating margin is higher than 53.99% of companies in Healthcare sector
When is MRK next earnings release?: The next earnings release for MRK is on August 4, 2026

Operating Margin Formula

Operating Profit Margin = Operating Income

Revenue × 100%

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