REGN
Regeneron Pharmaceuticals Inc.Stock · HealthcareNasdaq-100 0.3% · S&P 500 Equal Weight 0.2% · Nasdaq Composite 0.1% · S&P 500 0.10% · Russell 1000 0.09% · US Stock Market 0.09% · Russell 3000 0.09% · MSCI ACWI 0.07% · MSCI World 0.07%$781.49-1.48%
as of market close, Sep 11, 2026
☾ AH — —
Regeneron Pharmaceuticals Inc. monthly returns
Regeneron Pharmaceuticals Inc. has averaged 2.82% per month, positive in 50% of months. Month-by-month returns for Regeneron Pharmaceuticals Inc. (REGN) below, through September 11, 2026 — the table lists the most recent months; the bar chart plots the last 5 years.
Average month
+2.8%
417 months
Best month
+358.9%
Feb 2000
Worst month
-59.0%
Mar 2003
Positive months
50%
of all months
Regeneron Pharmaceuticals Inc. monthly returns#
| Month | Path | Total return |
|---|---|---|
| Sep 2026 | -2.2% | |
| Aug 2026 | +4.9% | |
| Jul 2026 | +21.3% | |
| Jun 2026 | +2.2% | |
| May 2026 | -12.9% | |
| Apr 2026 | -8.5% | |
| Mar 2026 | -1.2% | |
| Feb 2026 | +5.6% | |
| Jan 2026 | -3.9% | |
| Dec 2025 | -1.1% | |
| Nov 2025 | +19.8% | |
| Oct 2025 | +15.9% | |
| Sep 2025 | -3.2% | |
| Aug 2025 | +6.6% | |
| Jul 2025 | +3.9% | |
| Jun 2025 | +7.1% | |
| May 2025 | -18.0% | |
| Apr 2025 | -5.6% | |
| Mar 2025 | -9.2% | |
| Feb 2025 | +4.0% | |
| Jan 2025 | -5.5% | |
| Dec 2024 | -5.1% | |
| Nov 2024 | -10.5% | |
| Oct 2024 | -20.3% | |
| Sep 2024 | -11.3% | |
| Aug 2024 | +9.8% | |
| Jul 2024 | +2.7% | |
| Jun 2024 | +7.2% | |
| May 2024 | +10.0% | |
| Apr 2024 | -7.5% | |
| Mar 2024 | -0.4% | |
| Feb 2024 | +2.5% | |
| Jan 2024 | +7.3% | |
| Dec 2023 | +6.6% | |
| Nov 2023 | +5.6% | |
| Oct 2023 | -5.2% | |
| Sep 2023 | -0.4% | |
| Aug 2023 | +11.4% | |
| Jul 2023 | +3.3% | |
| Jun 2023 | -2.3% | |
| May 2023 | -8.3% | |
| Apr 2023 | -2.4% | |
| Mar 2023 | +8.1% | |
| Feb 2023 | +0.3% | |
| Jan 2023 | +5.1% | |
| Dec 2022 | -4.0% | |
| Nov 2022 | +0.4% | |
| Oct 2022 | +8.7% | |
| Sep 2022 | +18.6% | |
| Aug 2022 | -0.1% | |
| Jul 2022 | -1.6% | |
| Jun 2022 | -11.1% | |
| May 2022 | +0.9% | |
| Apr 2022 | -5.6% | |
| Mar 2022 | +12.9% | |
| Feb 2022 | +1.6% | |
| Jan 2022 | -3.6% | |
| Dec 2021 | -0.8% | |
| Nov 2021 | -0.5% | |
| Oct 2021 | +5.7% | |
| Sep 2021 | -10.1% | |
| Aug 2021 | +17.2% | |
| Jul 2021 | +2.9% | |
| Jun 2021 | +11.2% | |
| May 2021 | +4.4% | |
| Apr 2021 | +1.7% | |
| Mar 2021 | +5.0% | |
| Feb 2021 | -10.6% | |
| Jan 2021 | +4.3% | |
| Dec 2020 | -6.4% | |
| Nov 2020 | -5.1% | |
| Oct 2020 | -2.9% | |
| Sep 2020 | -9.7% | |
| Aug 2020 | -1.9% | |
| Jul 2020 | +1.4% | |
| Jun 2020 | +1.8% | |
| May 2020 | +16.5% | |
| Apr 2020 | +7.7% | |
| Mar 2020 | +9.8% | |
| Feb 2020 | +31.6% | |
| Jan 2020 | -10.0% | |
| Dec 2019 | +1.8% | |
| Nov 2019 | +20.5% | |
| Oct 2019 | +10.4% | |
| Sep 2019 | -4.4% | |
| Aug 2019 | -4.8% | |
| Jul 2019 | -2.6% | |
| Jun 2019 | +3.7% | |
| May 2019 | -12.1% | |
| Apr 2019 | -16.4% | |
| Mar 2019 | -4.7% | |
| Feb 2019 | +0.3% | |
| Jan 2019 | +14.9% | |
| Dec 2018 | +2.1% | |
| Nov 2018 | +7.8% | |
| Oct 2018 | -16.0% | |
| Sep 2018 | -0.7% | |
| Aug 2018 | +10.5% | |
| Jul 2018 | +6.7% | |
| Jun 2018 | +14.9% | |
| May 2018 | -1.1% | |
| Apr 2018 | -11.8% | |
| Mar 2018 | +7.5% | |
| Feb 2018 | -12.6% | |
| Jan 2018 | -2.5% | |
| Dec 2017 | +3.9% | |
| Nov 2017 | -10.1% | |
| Oct 2017 | -10.0% | |
| Sep 2017 | -10.0% | |
| Aug 2017 | +1.1% | |
| Jul 2017 | +0.1% | |
| Jun 2017 | +7.0% | |
| May 2017 | +18.2% | |
| Apr 2017 | +0.3% | |
| Mar 2017 | +3.8% | |
| Feb 2017 | +4.0% | |
| Jan 2017 | -2.1% | |
| Dec 2016 | -3.2% | |
| Nov 2016 | +9.9% | |
| Oct 2016 | -14.2% |
Monthly total return (since Oct 2021)#
-20%-10%0%10%20%
Oct 2021+5.7%
Nov 2021-0.53%
Dec 2021-0.79%
Jan 2022-3.6%2022
Feb 2022+1.6%
Mar 2022+13%
Apr 2022-5.6%
May 2022+0.85%
Jun 2022-11%
Jul 2022-1.6%
Aug 2022-0.11%
Sep 2022+19%
Oct 2022+8.7%
Nov 2022+0.39%
Dec 2022-4.0%
Jan 2023+5.1%2023
Feb 2023+0.26%
Mar 2023+8.1%
Apr 2023-2.4%
May 2023-8.3%
Jun 2023-2.3%
Jul 2023+3.3%
Aug 2023+11%
Sep 2023-0.43%
Oct 2023-5.2%
Nov 2023+5.6%
Dec 2023+6.6%
Jan 2024+7.3%2024
Feb 2024+2.5%
Mar 2024-0.37%
Apr 2024-7.5%
May 2024+10%
Jun 2024+7.2%
Jul 2024+2.7%
Aug 2024+9.8%
Sep 2024-11%
Oct 2024-20%
Nov 2024-10%
Dec 2024-5.1%
Jan 2025-5.5%2025
Feb 2025+4.0%
Mar 2025-9.2%
Apr 2025-5.6%
May 2025-18%
Jun 2025+7.1%
Jul 2025+3.9%
Aug 2025+6.6%
Sep 2025-3.2%
Oct 2025+16%
Nov 2025+20%
Dec 2025-1.1%
Jan 2026-3.9%2026
Feb 2026+5.6%
Mar 2026-1.2%
Apr 2026-8.5%
May 2026-13%
Jun 2026+2.2%
Jul 2026+21%
Aug 2026+4.9%
Sep 2026-2.2%
Methodology#
Monthly returns are total returns (dividends reinvested), computed from REGN'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 Regeneron Pharmaceuticals Inc.'s average monthly return?
- Regeneron Pharmaceuticals Inc. (REGN) has averaged about 2.82% per month, positive in roughly 50% of months. The best month was Feb 2000 (+358.9%) and the worst was Mar 2003 (-59.0%).
More on Regeneron Pharmaceuticals Inc.
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