Repligen Stock Price History
NASDAQ: RGENHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
173.88+10.04 (+6.13%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
RGEN price history at a glance
The price history for Repligen (RGEN) on this page begins on April 28, 1986, when the stock closed at $10.25; it most recently closed at $173.88 on October 5, 2026. The highest price in this record is $327.32, reached on September 20, 2021; the latest close is 46.9% below that peak. Across the 39 complete calendar years in the table, RGEN finished higher in 25 and lower in 14. Its best year was 1999 (+143.9%) and its worst was 1994 (-74.5%).
Over roughly 40 years the share price changed +1596.4%, a 7.3% compound annual price return (excluding dividends). In the last 12 months alone, RGEN has gained 16.8%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 1986
- $327.32
- Date of high
- Sep 20, 2021
- Low since 1986
- $0.50
- Date of low
- Jul 15, 1996
- 52-week high
- $198.87
- 52-week low
- $100.99
- IPO year
- 1986
- Last close
- $173.88
RGEN returns
1 week
-4.30%
1 month
+5.35%
3 months
+20.55%
6 months
+44.78%
Year to date
+6.11%
1 year
+16.85%
3 years
+13.84%
5 years
-34.86%
RGEN price return, excluding dividends.
RGEN annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 173.88 | +5.80% |
| 2025 | 164.35 | +9.64% |
| 2024 | 149.90 | -16.63% |
| 2023 | 179.80 | +6.20% |
| 2022 | 169.31 | -36.07% |
| 2021 | 264.84 | +38.20% |
| 2020 | 191.63 | +106.63% |
| 2019 | 92.74 | +82.34% |
| 2018 | 50.86 | +40.19% |
| 2017 | 36.28 | +17.72% |
| 2016 | 30.82 | +8.94% |
| 2015 | 28.29 | +40.75% |
| 2014 | 20.10 | +57.40% |
| 2013 | 12.77 | +84.27% |
| 2012 | 6.93 | +99.71% |
| 2011 | 3.47 | -26.01% |
| 2010 | 4.69 | +14.11% |
| 2009 | 4.11 | +4.85% |
| 2008 | 3.92 | -33.11% |
| 2007 | 5.86 | +108.54% |
| 2006 | 2.81 | -29.75% |
| 2005 | 4.00 | +38.89% |
| 2004 | 2.88 | -30.77% |
| 2003 | 4.16 | +49.64% |
| 2002 | 2.78 | +4.91% |
| 2001 | 2.65 | -21.48% |
| 2000 | 3.38 | +8.00% |
| 1999 | 3.13 | +143.89% |
| 1998 | 1.28 | +24.24% |
| 1997 | 1.03 | -28.26% |
| 1996 | 1.44 | +27.78% |
| 1995 | 1.13 | -35.71% |
| 1994 | 1.75 | -74.55% |
| 1993 | 6.88 | -27.63% |
| 1992 | 9.50 | -44.12% |
| 1991 | 17.00 | +41.67% |
| 1990 | 12.00 | +20.00% |
| 1989 | 10.00 | +42.86% |
| 1988 | 7.00 | -12.50% |
| 1987 | 8.00 | -11.11% |
| 1986* | 9.00 | -12.20% |
* Partial year: the record begins after the start of 1986; return measured from the first available close.
2026 return is year to date.
RGEN daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 164.25 | 174.82 | 164.21 | 173.88 | +6.13% | |
| 163.83 | 164.65 | 157.44 | 163.84 | -2.02% | |
| 174.75 | 175.04 | 165.99 | 167.22 | -4.37% | |
| 191.90 | 194.36 | 174.36 | 174.86 | -7.73% | |
| 178.75 | 191.26 | 178.61 | 189.50 | +4.29% | |
| 179.32 | 186.52 | 178.00 | 181.70 | +2.52% | |
| 194.00 | 194.00 | 177.12 | 177.23 | -7.80% | |
| 193.09 | 195.61 | 190.97 | 192.23 | -1.20% | |
| 196.00 | 196.65 | 190.98 | 194.57 | +0.25% | |
| 187.25 | 198.87 | 187.11 | 194.09 | +2.32% | |
| 189.92 | 191.51 | 186.91 | 189.68 | -0.51% | |
| 184.10 | 192.49 | 183.75 | 190.65 | +3.32% | |
| 186.38 | 188.95 | 181.71 | 184.53 | -1.19% | |
| 180.72 | 188.20 | 180.00 | 186.75 | +3.34% | |
| 176.89 | 182.25 | 176.22 | 180.71 | +2.16% | |
| 179.10 | 179.10 | 176.29 | 176.89 | -0.73% | |
| 174.93 | 178.65 | 173.24 | 178.19 | +3.05% | |
| 174.90 | 178.55 | 171.66 | 172.91 | -1.04% | |
| 168.27 | 175.86 | 168.27 | 174.73 | +4.01% | |
| 166.74 | 168.42 | 162.10 | 168.00 | +1.71% | |
| 166.72 | 168.06 | 164.02 | 165.18 | +0.30% | |
| 162.68 | 165.04 | 161.14 | 164.68 | -0.22% | |
| 168.53 | 169.52 | 162.46 | 165.05 | -2.06% | |
| 168.05 | 172.95 | 166.32 | 168.53 | +0.55% | |
| 167.26 | 169.51 | 165.00 | 167.60 | -1.19% | |
| 175.53 | 176.13 | 167.54 | 169.61 | -1.93% | |
| 171.77 | 176.87 | 168.58 | 172.94 | +1.72% | |
| 180.70 | 182.57 | 167.42 | 170.02 | -6.06% | |
| 174.17 | 181.07 | 174.01 | 180.98 | +2.67% | |
| 179.76 | 181.35 | 175.70 | 176.27 | -3.16% | |
| 179.90 | 183.09 | 179.14 | 182.03 | +0.96% | |
| 180.11 | 183.43 | 179.47 | 180.30 | -0.77% | |
| 181.62 | 185.34 | 178.98 | 181.69 | +0.04% | |
| 180.60 | 183.05 | 176.28 | 181.62 | +0.27% | |
| 179.66 | 182.43 | 175.75 | 181.13 | +0.47% | |
| 174.61 | 188.73 | 173.14 | 180.29 | +2.23% | |
| 172.74 | 179.87 | 170.00 | 176.36 | +6.15% | |
| 168.01 | 168.03 | 164.83 | 166.15 | -1.71% | |
| 166.25 | 169.50 | 164.62 | 169.04 | +1.32% | |
| 167.49 | 168.02 | 165.05 | 166.83 | -0.39% | |
| 167.19 | 168.37 | 161.90 | 167.49 | +1.08% | |
| 165.21 | 166.96 | 162.36 | 165.70 | +0.56% | |
| 163.41 | 168.20 | 161.02 | 164.77 | +0.98% | |
| 163.06 | 166.43 | 160.99 | 163.17 | -0.45% | |
| 159.44 | 164.97 | 159.44 | 163.90 | +2.80% | |
| 156.21 | 162.37 | 156.09 | 159.44 | +0.54% | |
| 150.00 | 158.95 | 149.94 | 158.59 | +5.88% | |
| 146.76 | 149.97 | 142.29 | 149.78 | +1.85% | |
| 142.06 | 147.38 | 140.54 | 147.06 | +4.29% | |
| 143.81 | 145.00 | 139.40 | 141.01 | -1.80% | |
| 143.67 | 144.18 | 139.98 | 143.60 | +1.68% | |
| 144.24 | 149.73 | 140.27 | 141.23 | -2.83% | |
| 139.70 | 154.00 | 137.35 | 145.34 | +10.90% | |
| 131.87 | 133.36 | 130.03 | 131.06 | -0.68% | |
| 138.13 | 138.13 | 131.82 | 131.96 | -4.10% | |
| 144.23 | 148.37 | 132.28 | 137.60 | -1.78% | |
| 131.76 | 142.48 | 131.17 | 140.09 | +2.26% | |
| 131.95 | 138.07 | 129.00 | 136.99 | -5.84% | |
| 147.35 | 149.38 | 144.36 | 145.49 | -1.20% | |
| 147.11 | 149.06 | 143.88 | 147.25 | -0.88% | |
| 148.66 | 150.90 | 147.36 | 148.55 | +0.33% | |
| 147.69 | 149.14 | 146.25 | 148.06 | +0.63% | |
| 143.88 | 147.25 | 142.89 | 147.13 | +1.55% | |
| 142.80 | 146.69 | 141.64 | 144.88 | +0.44% | |
| 144.35 | 145.19 | 141.84 | 144.24 | +0.21% | |
| 137.44 | 144.48 | 136.78 | 143.94 | +4.75% | |
| 137.67 | 138.88 | 135.08 | 137.41 | -1.73% | |
| 144.58 | 144.58 | 137.61 | 139.83 | -1.15% | |
| 140.48 | 142.24 | 137.11 | 141.46 | -0.66% | |
| 139.90 | 143.17 | 139.90 | 142.40 | +2.45% | |
| 137.15 | 140.62 | 134.68 | 138.99 | +1.87% | |
| 136.59 | 138.85 | 134.01 | 136.44 | -0.41% | |
| 142.81 | 144.72 | 135.72 | 137.00 | -6.81% | |
| 143.98 | 147.59 | 143.98 | 147.01 | +1.23% | |
| 143.00 | 149.05 | 140.45 | 145.23 | +4.93% | |
| 128.19 | 140.32 | 127.18 | 138.40 | +9.52% | |
| 128.16 | 130.73 | 124.85 | 126.37 | -0.16% | |
| 131.13 | 133.74 | 125.44 | 126.57 | -4.13% | |
| 131.40 | 133.57 | 127.48 | 132.02 | -1.15% | |
| 132.90 | 136.54 | 130.71 | 133.55 | +1.41% | |
| 131.32 | 134.11 | 129.70 | 131.69 | +0.63% | |
| 133.71 | 134.59 | 130.42 | 130.87 | +0.21% | |
| 133.58 | 135.73 | 130.43 | 130.59 | -2.06% | |
| 130.93 | 133.95 | 129.77 | 133.33 | +1.97% | |
| 128.57 | 135.07 | 126.84 | 130.76 | +0.48% | |
| 127.49 | 132.25 | 127.42 | 130.13 | +3.83% | |
| 123.57 | 126.48 | 121.21 | 125.33 | +2.47% | |
| 125.95 | 128.36 | 121.69 | 122.31 | -3.35% | |
| 121.80 | 128.46 | 121.73 | 126.55 | +3.96% | |
| 119.40 | 122.32 | 117.59 | 121.73 | +0.50% | |
| 122.18 | 122.41 | 119.21 | 121.13 | -1.60% | |
| 122.58 | 124.01 | 118.52 | 123.10 | -0.69% | |
| 122.82 | 125.60 | 121.81 | 123.95 | +0.99% | |
| 113.17 | 126.68 | 113.04 | 122.73 | +8.45% | |
| 115.15 | 118.20 | 112.00 | 113.17 | -1.75% | |
| 116.61 | 117.00 | 112.41 | 115.19 | +0.11% | |
| 113.50 | 116.00 | 112.37 | 115.06 | +1.49% | |
| 110.90 | 114.83 | 109.38 | 113.37 | +1.46% | |
| 109.00 | 111.88 | 103.63 | 111.74 | +2.97% | |
| 105.00 | 110.10 | 103.50 | 108.52 | +4.15% | |
| 103.70 | 106.38 | 102.48 | 104.20 | +1.29% | |
| 104.46 | 107.75 | 102.55 | 102.87 | -0.49% | |
| 107.03 | 107.75 | 100.99 | 103.38 | -3.41% | |
| 113.67 | 115.40 | 106.92 | 107.03 | -5.78% | |
| 116.29 | 119.01 | 113.26 | 113.60 | -1.99% | |
| 124.18 | 124.72 | 115.60 | 115.91 | -6.12% | |
| 125.83 | 126.83 | 121.26 | 123.46 | -2.35% | |
| 127.05 | 127.69 | 123.84 | 126.43 | +0.53% | |
| 129.32 | 131.53 | 125.21 | 125.76 | +0.12% | |
| 121.24 | 128.31 | 120.62 | 125.61 | +6.26% | |
| 116.05 | 120.18 | 116.05 | 118.21 | +0.86% | |
| 118.76 | 119.07 | 115.26 | 117.20 | -0.94% | |
| 114.08 | 118.42 | 112.97 | 118.31 | +4.60% | |
| 116.33 | 117.65 | 110.58 | 113.11 | -3.68% | |
| 118.28 | 118.79 | 114.85 | 117.43 | -0.73% | |
| 117.56 | 119.47 | 116.97 | 118.29 | +0.59% | |
| 115.15 | 118.32 | 111.45 | 117.60 | +3.10% | |
| 121.18 | 122.05 | 109.50 | 114.06 | -8.31% | |
| 134.08 | 134.94 | 123.89 | 124.40 | -6.25% | |
| 133.04 | 141.46 | 131.30 | 132.70 | +0.54% | |
| 130.82 | 133.95 | 129.05 | 131.99 | +0.59% | |
| 131.31 | 134.23 | 130.29 | 131.21 | +3.24% | |
| 131.81 | 132.05 | 125.84 | 127.09 | -3.67% | |
| 132.06 | 133.55 | 131.30 | 131.93 | +0.69% | |
| 124.11 | 131.38 | 123.83 | 131.03 | +6.88% | |
| 119.42 | 122.97 | 118.74 | 122.59 | +2.07% | |
| 120.62 | 121.80 | 118.76 | 120.10 | +0.27% | |
| 118.41 | 121.00 | 115.45 | 119.78 | +0.01% | |
| 120.81 | 122.89 | 118.56 | 119.77 | +3.89% | |
| 116.97 | 117.11 | 113.70 | 115.29 | -1.42% | |
| 117.23 | 118.00 | 114.97 | 116.95 | -0.70% | |
| 114.20 | 121.72 | 114.20 | 117.78 | -0.46% | |
| 118.54 | 120.90 | 117.83 | 118.32 | +0.42% | |
| 112.32 | 118.03 | 112.32 | 117.82 | +5.68% | |
| 111.38 | 113.27 | 110.50 | 111.49 | +1.24% | |
| 113.31 | 114.41 | 109.66 | 110.12 | -3.76% | |
| 112.66 | 117.37 | 112.66 | 114.42 | +0.09% | |
| 117.93 | 119.90 | 111.92 | 114.32 | -1.70% | |
| 114.79 | 117.74 | 113.66 | 116.30 | -0.04% | |
| 118.60 | 122.00 | 116.23 | 116.35 | +2.17% | |
| 116.89 | 117.80 | 113.63 | 113.88 | -3.17% | |
| 115.83 | 119.59 | 115.83 | 117.61 | +0.02% | |
| 117.48 | 118.91 | 116.21 | 117.59 | -1.41% | |
| 117.14 | 122.62 | 116.90 | 119.27 | +3.61% | |
| 115.32 | 117.22 | 113.50 | 115.11 | +0.80% | |
| 114.50 | 116.01 | 112.84 | 114.20 | +0.39% | |
| 117.25 | 118.76 | 112.47 | 113.76 | -4.59% | |
| 120.66 | 122.95 | 118.54 | 119.23 | -2.10% | |
| 128.20 | 129.00 | 121.54 | 121.79 | -4.77% | |
| 118.06 | 128.14 | 118.06 | 127.89 | +6.58% | |
| 123.33 | 123.52 | 118.21 | 119.99 | -4.03% | |
| 124.00 | 127.22 | 122.04 | 125.03 | -0.64% | |
| 123.86 | 127.03 | 123.37 | 125.84 | +2.26% | |
| 122.10 | 125.03 | 118.72 | 123.06 | -1.53% | |
| 126.27 | 128.24 | 123.80 | 124.97 | -2.92% | |
| 132.71 | 133.94 | 128.05 | 128.73 | -3.68% | |
| 132.39 | 135.18 | 131.05 | 133.65 | +1.14% | |
| 134.88 | 137.38 | 128.19 | 132.14 | -1.88% | |
| 122.28 | 139.44 | 120.00 | 134.67 | -0.54% | |
| 133.80 | 137.73 | 132.08 | 135.40 | -0.21% | |
| 135.26 | 140.50 | 135.26 | 135.68 | -1.12% | |
| 137.09 | 138.24 | 133.02 | 137.22 | -0.64% | |
| 137.21 | 139.14 | 134.75 | 138.11 | +1.99% | |
| 135.44 | 140.75 | 131.93 | 135.41 | -0.75% | |
| 133.97 | 140.75 | 133.39 | 136.44 | +2.87% | |
| 138.88 | 140.45 | 130.40 | 132.63 | -4.86% | |
| 142.11 | 145.43 | 137.41 | 139.40 | -2.56% | |
| 144.40 | 146.36 | 141.39 | 143.06 | -0.36% | |
| 140.56 | 143.98 | 138.17 | 143.58 | +0.98% | |
| 142.08 | 145.59 | 139.80 | 142.18 | +1.80% | |
| 145.62 | 147.16 | 138.52 | 139.66 | -4.41% | |
| 151.08 | 152.46 | 145.90 | 146.11 | -2.74% | |
| 152.40 | 160.88 | 145.01 | 150.23 | -0.59% | |
| 149.29 | 151.95 | 146.95 | 151.12 | +1.17% | |
| 156.32 | 157.44 | 148.84 | 149.37 | -4.48% | |
| 158.95 | 158.95 | 152.45 | 156.37 | -2.30% | |
| 161.36 | 162.98 | 157.77 | 160.05 | -2.19% | |
| 162.26 | 164.94 | 160.26 | 163.63 | +0.18% | |
| 163.41 | 166.78 | 161.76 | 163.34 | +0.62% | |
| 167.67 | 169.78 | 160.22 | 162.33 | -3.33% | |
| 170.81 | 174.87 | 166.40 | 167.93 | -1.20% | |
| 165.26 | 170.67 | 165.18 | 169.97 | +4.07% | |
| 159.54 | 165.60 | 157.29 | 163.33 | +0.81% | |
| 162.29 | 165.30 | 160.45 | 162.02 | +0.20% | |
| 162.06 | 165.03 | 158.80 | 161.69 | -0.21% | |
| 167.50 | 168.25 | 158.91 | 162.03 | -3.16% | |
| 170.04 | 172.51 | 160.57 | 167.31 | -0.65% | |
| 167.77 | 170.07 | 164.74 | 168.40 | +0.95% | |
| 167.49 | 169.56 | 164.29 | 166.82 | +0.24% | |
| 166.87 | 168.66 | 164.19 | 166.42 | -1.56% | |
| 172.66 | 175.00 | 167.86 | 169.05 | -1.86% | |
| 169.44 | 175.77 | 169.36 | 172.26 | +1.66% | |
| 164.53 | 170.65 | 164.53 | 169.44 | +3.10% | |
| 163.53 | 167.51 | 162.21 | 164.35 | +0.30% | |
| 166.41 | 167.09 | 163.47 | 163.86 | -1.64% | |
| 164.93 | 167.09 | 162.02 | 166.59 | +0.52% | |
| 165.04 | 167.65 | 161.41 | 165.73 | -0.29% | |
| 165.15 | 166.24 | 163.85 | 166.21 | +0.33% | |
| 166.67 | 166.67 | 164.50 | 165.66 | -0.42% | |
| 164.00 | 166.97 | 162.53 | 166.36 | +0.47% | |
| 162.19 | 167.74 | 161.73 | 165.58 | +1.97% | |
| 158.32 | 163.00 | 158.32 | 162.38 | +2.95% | |
| 160.13 | 162.29 | 156.72 | 157.72 | +0.51% | |
| 156.81 | 161.08 | 156.56 | 156.92 | -0.74% | |
| 160.00 | 160.99 | 156.01 | 158.09 | -1.55% | |
| 159.86 | 160.91 | 157.01 | 160.58 | +2.03% | |
| 161.26 | 162.06 | 156.31 | 157.39 | -2.64% | |
| 163.65 | 164.60 | 161.17 | 161.66 | -1.31% | |
| 161.99 | 165.02 | 160.55 | 163.80 | +1.95% | |
| 160.55 | 164.15 | 160.50 | 160.67 | -0.09% | |
| 163.68 | 164.54 | 160.11 | 160.81 | -2.53% | |
| 166.21 | 167.20 | 163.87 | 164.98 | -0.47% | |
| 165.51 | 167.67 | 161.67 | 165.76 | -0.46% | |
| 165.39 | 170.40 | 165.04 | 166.52 | +0.91% | |
| 166.11 | 168.28 | 163.23 | 165.02 | -0.80% | |
| 168.57 | 171.01 | 165.84 | 166.35 | -2.73% | |
| 174.01 | 174.01 | 168.70 | 171.02 | -0.09% | |
| 171.82 | 172.61 | 168.79 | 171.18 | -0.34% | |
| 167.17 | 173.65 | 167.11 | 171.76 | +2.69% | |
| 161.38 | 167.97 | 160.65 | 167.26 | +2.92% | |
| 156.50 | 164.39 | 155.72 | 162.51 | +5.28% | |
| 156.76 | 159.78 | 153.58 | 154.36 | -0.46% | |
| 152.09 | 155.82 | 150.26 | 155.08 | +1.32% | |
| 147.74 | 153.73 | 146.56 | 153.06 | +2.72% | |
| 152.32 | 154.82 | 148.45 | 149.00 | -2.21% | |
| 144.81 | 154.79 | 144.81 | 152.37 | +1.20% | |
| 155.19 | 157.90 | 150.47 | 150.56 | -4.71% | |
| 152.62 | 158.74 | 152.62 | 158.01 | +2.98% | |
| 145.32 | 155.13 | 145.32 | 153.44 | +5.34% | |
| 144.40 | 151.10 | 144.40 | 145.66 | +1.99% | |
| 144.64 | 144.64 | 139.40 | 142.82 | -1.49% | |
| 145.35 | 147.00 | 141.63 | 144.98 | -0.59% | |
| 146.41 | 148.65 | 144.02 | 145.84 | -0.74% | |
| 149.06 | 151.31 | 146.00 | 146.93 | -2.16% | |
| 147.52 | 150.84 | 146.42 | 150.17 | +0.74% | |
| 145.76 | 153.48 | 144.21 | 149.06 | +3.11% | |
| 147.87 | 150.11 | 144.18 | 144.57 | -2.63% | |
| 149.92 | 155.31 | 148.17 | 148.48 | -2.04% | |
| 165.00 | 166.62 | 150.73 | 151.57 | -5.92% | |
| 165.69 | 168.01 | 160.40 | 161.10 | -3.14% | |
| 166.11 | 169.87 | 164.97 | 166.33 | +0.68% | |
| 155.27 | 166.18 | 155.27 | 165.20 | +4.95% | |
| 156.90 | 160.46 | 155.74 | 157.41 | +0.42% | |
| 158.00 | 165.17 | 156.50 | 156.75 | +1.43% | |
| 153.81 | 157.83 | 152.95 | 154.54 | +1.27% | |
| 153.50 | 156.31 | 152.54 | 152.60 | -1.26% | |
| 157.03 | 157.21 | 152.44 | 154.55 | +3.36% | |
| 148.79 | 152.36 | 147.16 | 149.52 | +0.75% | |
| 146.16 | 150.85 | 145.51 | 148.40 | -0.18% | |
| 145.69 | 150.40 | 145.01 | 148.67 | +2.36% | |
| 148.33 | 148.96 | 143.47 | 145.24 | -2.40% | |
| 150.81 | 153.02 | 147.88 | 148.81 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the RGEN chart for longer ranges.