Nasdaq · RGEN · stock
Repligen Corp. (RGEN) stock price history
Every Nasdaq trading session of Repligen Corp. from Apr 29, 1986 to Sep 29, 2026: 10,183 daily bars, adjusted for splits and dividends, with minute bars from Jul 13, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
RGEN adjusted close, 1986 to 2026
- $324.21
- All time high, 2021
- $198.87
- 52 week high, $100.99 low
- 10,183
- Daily sessions since 1986
Last updated Sep 29, 2026, the last stored session. Refreshes after each trading day. Full 1986 to 2026 series and minute bars.
RGEN key facts
- Repligen Corp. (RGEN) closed at $194.57 on Sep 29, 2026 on Nasdaq.
- RGEN's all time high close is $324.21, set on Sep 23, 2021; its all time low close is $0.5000 on Jul 15, 1996.
- RGEN's 52 week range is $100.99 to $198.87.
- RGEN returned +56.8% over the year to Sep 29, 2026 and -32.0% over five years.
- Over ten years RGEN returned +559%, +20.7% a year compounded.
- RGEN's deepest drawdown was -98.3% from Oct 22, 1991 to Jul 15, 1996.
- DataCedar holds 10,183 daily sessions of RGEN history from Apr 29, 1986 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
RGEN price chart, 1986 to 2026
RGEN returns
Price return from the last close on or before the window start to Sep 29, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +10.4% |
| 3 months | +42.0% |
| 6 months | +76.7% |
| Year to date | +16.8% |
| 1 year | +56.8% |
| 3 years | +22.4% |
| 5 years | -32.0% |
| 10 years | +558.7% |
| Since Apr 29, 1986 | +1,630% |
| Compound annual growth, 40.4 years | +7.3% |
RGEN records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $324.21 on Sep 23, 2021
- All time low close
- $0.5000 on Jul 15, 1996
- 52 week high
- $198.87 on Sep 28, 2026
- 52 week low
- $100.99 on May 14, 2026
- Deepest drawdown
- -98.3% from Oct 22, 1991 to Jul 15, 1996, recovered Mar 13, 2015
- Best single session
- +104.3% on May 4, 1998
- Worst single session
- -42.5% on Jan 5, 2004
- Volatility, 1 year annualised
- 45.3%
- Sessions closing higher, 1 year
- 53%
- Growth of 1 since 1986
- 17.3×
- Best calendar year
- 1999, +144%
- Worst calendar year
- 1994, -75%
RGEN price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 1986 starts on Apr 29, 1986; 2026 runs to Sep 29, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $163.53 | $198.87 | $100.99 | $194.57 | +18.7% | 190.6M | 186 |
| 2025 | $145.37 | $182.52 | $102.97 | $163.86 | +13.8% | 200.5M | 250 |
| 2024 | $176.79 | $211.13 | $113.50 | $143.94 | -19.9% | 163.7M | 252 |
| 2023 | $171.22 | $200.98 | $110.45 | $179.80 | +6.2% | 147.7M | 250 |
| 2022 | $265.78 | $265.78 | $137.21 | $169.31 | -36.1% | 135M | 251 |
| 2021 | $192.63 | $327.32 | $162.29 | $264.84 | +38.2% | 97.3M | 252 |
| 2020 | $93.06 | $212.55 | $78.41 | $191.63 | +107.2% | 128.2M | 253 |
| 2019 | $52.33 | $99.25 | $49.07 | $92.50 | +75.4% | 121.9M | 252 |
| 2018 | $36.36 | $70.50 | $29.56 | $52.74 | +45.4% | 90.4M | 251 |
| 2017 | $30.80 | $46.81 | $28.48 | $36.28 | +17.7% | 81.3M | 251 |
| 2016 | $27.90 | $34.06 | $20.07 | $30.82 | +8.9% | 73.8M | 252 |
| 2015 | $19.83 | $42.48 | $19.53 | $28.29 | +42.9% | 94.6M | 252 |
| 2014 | $13.74 | $26.75 | $11.70 | $19.80 | +45.2% | 121.7M | 252 |
| 2013 | $6.40 | $14.05 | $5.73 | $13.64 | +117.2% | 76.6M | 252 |
| 2012 | $3.46 | $7.29 | $3.40 | $6.28 | +81.0% | 41.5M | 250 |
| 2011 | $4.70 | $5.36 | $2.90 | $3.47 | -26.0% | 19.9M | 252 |
| 2010 | $4.17 | $4.85 | $3.00 | $4.69 | +14.1% | 21M | 252 |
| 2009 | $3.79 | $5.85 | $3.55 | $4.11 | +8.7% | 26.5M | 252 |
| 2008 | $6.71 | $6.93 | $3.25 | $3.78 | -42.3% | 44.2M | 253 |
| 2007 | $2.78 | $6.69 | $2.78 | $6.55 | +133.1% | 26.3M | 251 |
| 2006 | $4.09 | $5.08 | $2.14 | $2.81 | -29.8% | 41.3M | 251 |
| 2005 | $2.90 | $4.45 | $1.61 | $4.00 | +38.9% | 70.9M | 252 |
| 2004 | $4.58 | $4.58 | $1.22 | $2.88 | -34.1% | 100M | 252 |
| 2003 | $2.86 | $8.47 | $2.73 | $4.37 | +43.7% | 82.2M | 252 |
| 2002 | $2.52 | $4.50 | $2.05 | $3.04 | +25.1% | 19.9M | 252 |
| 2001 | $3.50 | $5.88 | $1.28 | $2.43 | -28.0% | 29.4M | 248 |
| 2000 | $3.13 | $18.00 | $2.88 | $3.38 | +8.0% | 81.7M | 252 |
| 1999 | $1.34 | $4.88 | $1.22 | $3.13 | +143.9% | 32.8M | 252 |
| 1998 | $0.8438 | $3.56 | $0.8438 | $1.28 | +64.0% | 16.4M | 252 |
| 1997 | $1.19 | $1.75 | $0.6875 | $0.7813 | -34.2% | 10.8M | 253 |
| 1996 | $1.19 | $1.69 | $0.5000 | $1.19 | +5.6% | 21.6M | 254 |
| 1995 | $1.63 | $3.13 | $0.8750 | $1.13 | -35.7% | 21.1M | 252 |
| 1994 | $7.00 | $8.00 | $1.63 | $1.75 | -74.5% | 19.2M | 252 |
| 1993 | $9.50 | $10.75 | $5.50 | $6.88 | -27.6% | 16.6M | 253 |
| 1992 | $15.25 | $20.75 | $7.50 | $9.50 | -38.7% | 23.1M | 254 |
| 1991 | $12.50 | $30.25 | $9.50 | $15.50 | +24.0% | 48.2M | 253 |
| 1990 | $10.00 | $17.75 | $4.75 | $12.50 | +25.0% | 10.8M | 253 |
| 1989 | $7.00 | $10.50 | $6.25 | $10.00 | +42.9% | 5.9M | 252 |
| 1988 | $8.25 | $11.50 | $5.25 | $7.00 | -12.5% | 4.3M | 253 |
| 1987 | $8.75 | $27.25 | $5.50 | $8.00 | -8.6% | 12.5M | 253 |
| 1986 | $11.25 | $11.38 | $5.75 | $8.75 | n/a | 4.9M | 172 |
RGEN monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $194.57 | +7.5% |
| August 2026 | $180.98 | +28.3% |
| July 2026 | $141.01 | +3.3% |
| June 2026 | $136.44 | +10.1% |
| May 2026 | $123.95 | +4.8% |
| April 2026 | $118.31 | +0.4% |
| March 2026 | $117.82 | -8.5% |
| February 2026 | $128.73 | -13.8% |
| January 2026 | $149.37 | -8.8% |
| December 2025 | $163.86 | -4.2% |
| November 2025 | $171.02 | +14.7% |
| October 2025 | $149.06 | +11.5% |
About the RGEN data
Daily bars. 10,183 sessions from Apr 29, 1986 to Sep 29, 2026, one row per Nasdaq trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Jul 13, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are Nasdaq trading days; minute timestamps are UTC. Prices are in USD. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Apr 29, 1986, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/RGEN/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
RGEN share price history
