RGEN
$175.42-4.75%
Repligen CorporationStock · HealthcareNasdaq Composite 0.02%Russell 1000 0.01%Russell 3000 0.01%US Stock Market 0.01%
Repligen Corporation monthly returns
Repligen Corporation has averaged 2.25% per month, positive in 50% of months. Month-by-month returns for Repligen Corporation (RGEN) below, through October 16, 2026 — the table lists the most recent months; the bar chart plots the last 5 years.
Average month
+2.2%
430 months
Best month
+191.7%
Feb 2000
Worst month
-44.0%
Dec 1994
Positive months
50%
of all months
Repligen Corporation monthly returns#
| Month | Path | Total return |
|---|---|---|
| Oct 2026 | -8.7% | |
| Sep 2026 | +6.2% | |
| Aug 2026 | +28.3% | |
| Jul 2026 | +3.3% | |
| Jun 2026 | +10.1% | |
| May 2026 | +4.8% | |
| Apr 2026 | +0.4% | |
| Mar 2026 | -8.5% | |
| Feb 2026 | -13.8% | |
| Jan 2026 | -8.8% | |
| Dec 2025 | -4.2% | |
| Nov 2025 | +14.7% | |
| Oct 2025 | +11.5% | |
| Sep 2025 | +9.3% | |
| Aug 2025 | +4.5% | |
| Jul 2025 | -5.9% | |
| Jun 2025 | +5.3% | |
| May 2025 | -14.4% | |
| Apr 2025 | +8.4% | |
| Mar 2025 | -20.1% | |
| Feb 2025 | -4.2% | |
| Jan 2025 | +15.5% | |
| Dec 2024 | -4.4% | |
| Nov 2024 | +12.1% | |
| Oct 2024 | -9.8% | |
| Sep 2024 | -1.4% | |
| Aug 2024 | -9.8% | |
| Jul 2024 | +32.8% | |
| Jun 2024 | -15.4% | |
| May 2024 | -9.2% | |
| Apr 2024 | -10.7% | |
| Mar 2024 | -5.2% | |
| Feb 2024 | +2.4% | |
| Jan 2024 | +5.3% | |
| Dec 2023 | +14.3% | |
| Nov 2023 | +16.9% | |
| Oct 2023 | -15.4% | |
| Sep 2023 | -8.6% | |
| Aug 2023 | +1.4% | |
| Jul 2023 | +21.3% | |
| Jun 2023 | -15.8% | |
| May 2023 | +10.7% | |
| Apr 2023 | -9.9% | |
| Mar 2023 | -3.4% | |
| Feb 2023 | -5.9% | |
| Jan 2023 | +9.4% | |
| Dec 2022 | -5.3% | |
| Nov 2022 | -2.0% | |
| Oct 2022 | -2.5% | |
| Sep 2022 | -14.7% | |
| Aug 2022 | +2.8% | |
| Jul 2022 | +31.4% | |
| Jun 2022 | -1.3% | |
| May 2022 | +4.6% | |
| Apr 2022 | -16.4% | |
| Mar 2022 | -4.4% | |
| Feb 2022 | -0.8% | |
| Jan 2022 | -25.1% | |
| Dec 2021 | -7.6% | |
| Nov 2021 | -1.4% | |
| Oct 2021 | +0.5% | |
| Sep 2021 | +2.1% | |
| Aug 2021 | +15.2% | |
| Jul 2021 | +23.1% | |
| Jun 2021 | +9.3% | |
| May 2021 | -13.7% | |
| Apr 2021 | +8.9% | |
| Mar 2021 | -8.5% | |
| Feb 2021 | +6.2% | |
| Jan 2021 | +4.4% | |
| Dec 2020 | +1.0% | |
| Nov 2020 | +13.9% | |
| Oct 2020 | +12.9% | |
| Sep 2020 | -4.8% | |
| Aug 2020 | +2.7% | |
| Jul 2020 | +22.1% | |
| Jun 2020 | -5.6% | |
| May 2020 | +12.8% | |
| Apr 2020 | +20.3% | |
| Mar 2020 | +12.8% | |
| Feb 2020 | -14.7% | |
| Jan 2020 | +8.5% | |
| Dec 2019 | +4.2% | |
| Nov 2019 | +11.6% | |
| Oct 2019 | +3.7% | |
| Sep 2019 | -17.4% | |
| Aug 2019 | -1.7% | |
| Jul 2019 | +9.8% | |
| Jun 2019 | +23.7% | |
| May 2019 | +3.1% | |
| Apr 2019 | +14.0% | |
| Mar 2019 | -0.7% | |
| Feb 2019 | +4.4% | |
| Jan 2019 | +8.1% | |
| Dec 2018 | -18.4% | |
| Nov 2018 | +19.3% | |
| Oct 2018 | -2.2% | |
| Sep 2018 | +1.1% | |
| Aug 2018 | +13.6% | |
| Jul 2018 | +2.7% | |
| Jun 2018 | +7.7% | |
| May 2018 | +18.1% | |
| Apr 2018 | +2.3% | |
| Mar 2018 | +5.5% | |
| Feb 2018 | -3.1% | |
| Jan 2018 | -2.5% | |
| Dec 2017 | +2.3% | |
| Nov 2017 | -4.7% | |
| Oct 2017 | -2.9% | |
| Sep 2017 | -12.3% | |
| Aug 2017 | +8.4% | |
| Jul 2017 | -2.8% | |
| Jun 2017 | +5.6% | |
| May 2017 | +6.7% | |
| Apr 2017 | +4.5% | |
| Mar 2017 | +11.7% | |
| Feb 2017 | +4.9% | |
| Jan 2017 | -2.5% | |
| Dec 2016 | -4.3% | |
| Nov 2016 | +12.7% |
Monthly total return (since Nov 2021)#
-30%-20%-10%0%10%20%30%
Nov 2021-1.4%
Dec 2021-7.6%
Jan 2022-25%2022
Feb 2022-0.83%
Mar 2022-4.4%
Apr 2022-16%
May 2022+4.6%
Jun 2022-1.3%
Jul 2022+31%
Aug 2022+2.8%
Sep 2022-15%
Oct 2022-2.5%
Nov 2022-2.0%
Dec 2022-5.3%
Jan 2023+9.4%2023
Feb 2023-5.9%
Mar 2023-3.4%
Apr 2023-9.9%
May 2023+11%
Jun 2023-16%
Jul 2023+21%
Aug 2023+1.4%
Sep 2023-8.6%
Oct 2023-15%
Nov 2023+17%
Dec 2023+14%
Jan 2024+5.3%2024
Feb 2024+2.4%
Mar 2024-5.2%
Apr 2024-11%
May 2024-9.2%
Jun 2024-15%
Jul 2024+33%
Aug 2024-9.8%
Sep 2024-1.4%
Oct 2024-9.8%
Nov 2024+12%
Dec 2024-4.4%
Jan 2025+15%2025
Feb 2025-4.2%
Mar 2025-20%
Apr 2025+8.4%
May 2025-14%
Jun 2025+5.3%
Jul 2025-5.9%
Aug 2025+4.5%
Sep 2025+9.3%
Oct 2025+12%
Nov 2025+15%
Dec 2025-4.2%
Jan 2026-8.8%2026
Feb 2026-14%
Mar 2026-8.5%
Apr 2026+0.42%
May 2026+4.8%
Jun 2026+10%
Jul 2026+3.3%
Aug 2026+28%
Sep 2026+6.2%
Oct 2026-8.7%
Repligen Corporation returns by calendar month#
Every month of every year since 1991, one tick per year on a shared scale; the dark bar is the month's average. Total returns, dividends reinvested.
October 2026 so far: -8.74% — 30th of 36 Octobers since 1991 at the last close; the average October returned +4.0%.
| Month | −195%0+195% | Average | Median | Up | Best | Worst |
|---|---|---|---|---|---|---|
| Jan | +9.2% | +8.1% | 64% | +75.0% 1995 | -25.1% 2022 | |
| Feb | +1.3% | -2.7% | 36% | +191.7% 2000 | -34.7% 1995 | |
| Mar | +2.9% | +0.6% | 50% | +96.0% 1999 | -29.2% 2001 | |
| Apr | -0.2% | +0.5% | 53% | +33.8% 2003 | -37.7% 2000 | |
| May | +4.0% | +2.9% | 56% | +46.2% 2001 | -26.2% 1994 | |
| Jun | -0.9% | -0.9% | 47% | +37.7% 2000 | -27.6% 2002 | |
| Jul | +4.0% | +2.7% | 56% | +46.2% 2003 | -34.1% 2004 | |
| Aug | +5.9% | +3.7% | 67% | +41.5% 2012 | -17.6% 1992 | |
| Sep | -2.6% | -0.2% | 39% | +29.0% 1996 | -27.8% 2003 | |
| Oct | +4.0% | +0.5% | 51% | +44.4% 2002 | -42.9% 1995 | |
| Nov | +2.9% | -1.5% | 43% | +30.9% 1999 | -40.2% 2000 | |
| Dec | -3.1% | -3.8% | 40% | +37.0% 2007 | -44.0% 1994 |
Methodology#
Monthly returns are total returns (dividends reinvested), computed from RGEN'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 Repligen Corporation's average monthly return?
- Repligen Corporation (RGEN) has averaged about 2.25% per month, positive in roughly 50% of months. The best month was Feb 2000 (+191.7%) and the worst was Dec 1994 (-44.0%).
More on Repligen Corporation
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