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SUPN
$41.23+3.49%
as of close, Oct 20, 2026
☾ AH $41.23 +3.49%
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Supernus Pharmaceuticals Inc. monthly returns

Supernus Pharmaceuticals Inc. has averaged 1.77% per month, positive in 54% of months. Month-by-month returns for Supernus Pharmaceuticals Inc. (SUPN) below, through October 20, 2026 — the table lists the most recent months; the bar chart plots the last 5 years.

Average month
+1.8%
166 months
Best month
+34.5%
Mar 2015
Worst month
-29.9%
Dec 2018
Positive months
54%
of all months

Supernus Pharmaceuticals Inc. monthly returns#

Supernus Pharmaceuticals Inc. total return by month
MonthTotal return
Oct 2026
-4.2%
Sep 2026
-2.6%
Aug 2026
-0.9%
Jul 2026
-4.0%
Jun 2026
+0.7%
May 2026
-3.8%
Apr 2026
-7.1%
Mar 2026
-5.6%
Feb 2026
+13.6%
Jan 2026
-3.1%
Dec 2025
+9.0%
Nov 2025
-17.3%
Oct 2025
+15.4%
Sep 2025
+5.9%
Aug 2025
+28.5%
Jul 2025
+11.4%
Jun 2025
-0.6%
May 2025
-2.4%
Apr 2025
-0.8%
Mar 2025
+2.2%
Feb 2025
-16.4%
Jan 2025
+6.1%
Dec 2024
-1.1%
Nov 2024
+7.3%
Oct 2024
+9.3%
Sep 2024
-11.3%
Aug 2024
+17.9%
Jul 2024
+11.5%
Jun 2024
-1.4%
May 2024
-9.9%
Apr 2024
-11.8%
Mar 2024
+14.8%
Feb 2024
+7.3%
Jan 2024
-4.4%
Dec 2023
+6.2%
Nov 2023
+14.3%
Oct 2023
-13.5%
Sep 2023
-13.4%
Aug 2023
+3.7%
Jul 2023
+2.1%
Jun 2023
-9.3%
May 2023
-10.1%
Apr 2023
+1.7%
Mar 2023
-3.6%
Feb 2023
-8.3%
Jan 2023
+15.0%
Dec 2022
-2.9%
Nov 2022
+7.1%
Oct 2022
+1.2%
Sep 2022
-1.1%
Aug 2022
+7.8%
Jul 2022
+9.8%
Jun 2022
+3.8%
May 2022
-0.1%
Apr 2022
-13.7%
Mar 2022
+1.2%
Feb 2022
+3.6%
Jan 2022
+5.8%
Dec 2021
-2.7%
Nov 2021
+0.4%
Oct 2021
+11.9%
Sep 2021
-3.1%
Aug 2021
+4.6%
Jul 2021
-14.5%
Jun 2021
+3.1%
May 2021
-2.0%
Apr 2021
+16.3%
Mar 2021
-2.6%
Feb 2021
-8.6%
Jan 2021
+16.8%
Dec 2020
+18.1%
Nov 2020
+16.0%
Oct 2020
-11.9%
Sep 2020
-5.2%
Aug 2020
-1.3%
Jul 2020
-6.2%
Jun 2020
-1.5%
May 2020
+3.1%
Apr 2020
+30.1%
Mar 2020
+0.0%
Feb 2020
-21.3%
Jan 2020
-3.6%
Dec 2019
+1.5%
Nov 2019
-15.9%
Oct 2019
+1.1%
Sep 2019
+1.7%
Aug 2019
-19.0%
Jul 2019
+0.8%
Jun 2019
+10.2%
May 2019
-18.2%
Apr 2019
+4.8%
Mar 2019
-14.2%
Feb 2019
+7.1%
Jan 2019
+14.8%
Dec 2018
-29.9%
Nov 2018
-0.3%
Oct 2018
-5.5%
Sep 2018
+13.7%
Aug 2018
-16.3%
Jul 2018
-11.5%
Jun 2018
+6.2%
May 2018
+20.1%
Apr 2018
+2.4%
Mar 2018
+17.7%
Feb 2018
-0.4%
Jan 2018
-2.0%
Dec 2017
+5.4%
Nov 2017
-9.1%
Oct 2017
+4.0%
Sep 2017
-12.7%
Aug 2017
+13.2%
Jul 2017
-6.1%
Jun 2017
+14.6%
May 2017
+15.3%
Apr 2017
+4.2%
Mar 2017
+21.8%
Feb 2017
-5.0%
Jan 2017
+7.1%
Dec 2016
+17.2%
Nov 2016
+8.8%

Monthly total return (since Nov 2021)#

Supernus Pharmaceuticals Inc. returns by calendar month#

Every month of every year since 2013, one tick per year on a shared scale; the dark bar is the month's average. Total returns, dividends reinvested.

October 2026 so far: -4.21% — 9th of 14 Octobers since 2013 at the last close; the average October returned -0.1%.

Supernus Pharmaceuticals Inc. returns by calendar month since 2013
Month−35%0+35%AverageUp
Jan+5.4%64%
Feb-0.7%50%
Mar+3.6%50%
Apr+2.0%57%
May+4.3%50%
Jun+4.7%64%
Jul+0.9%57%
Aug+1.5%50%
Sep-2.0%36%
OctOctober 2026 so far: -4.2%-0.1%54%
Nov+1.7%62%
Dec+0.1%54%

Methodology#

Monthly returns are total returns (dividends reinvested), computed from SUPN's split- and dividend-adjusted month-end closes. The table shows the most recent 120 months and the bar chart the most recent 60. See the year-by-year returns for the annual view. Past performance does not predict future returns; not investment advice.

FAQ#

What is Supernus Pharmaceuticals Inc.'s average monthly return?
Supernus Pharmaceuticals Inc. (SUPN) has averaged about 1.77% per month, positive in roughly 54% of months. The best month was Mar 2015 (+34.5%) and the worst was Dec 2018 (-29.9%).

More on Supernus Pharmaceuticals Inc.