What is the current 10-day volatility of RGEN?

As of today, RGEN 10-day volatility is 67.28%

What 10-day volatility category does RGEN fall into?

Based on its current 10-day historical volatility, RGEN falls into the extreme volatility category

What is RGEN 10-day volatility 1-year high?

RGEN 10-day volatility reached a 1-year high of 76.77% on August 3, 2026

What is RGEN 10-day volatility 1-year low?

RGEN 10-day volatility reached a 1-year low of 19.99% on January 2, 2026

What is the current 1-month volatility of RGEN?

As of today, RGEN 1-month volatility is 51.93%

What 1-month volatility category does RGEN fall into?

Based on its current 1-month historical volatility, RGEN falls into the high volatility category

What is RGEN 1-month volatility 1-year high?

RGEN 1-month volatility reached a 1-year high of 63.95% on May 13, 2026

What is RGEN 1-month volatility 1-year low?

RGEN 1-month volatility reached a 1-year low of 23.02% on January 20, 2026

What is the current 3-month volatility of RGEN?

As of today, RGEN 3-month volatility is 49.29%

What 3-month volatility category does RGEN fall into?

Based on its current 3-month historical volatility, RGEN falls into the high volatility category

What is RGEN 3-month volatility 1-year high?

RGEN 3-month volatility reached a 1-year high of 55.41% on June 29, 2026

What is RGEN 3-month volatility 1-year low?

RGEN 3-month volatility reached a 1-year low of 29.84% on February 25, 2026

What is the current 1-year volatility of RGEN?

As of today, RGEN 1-year volatility is 45.71%

What 1-year volatility category does RGEN fall into?

Based on its current 1-year historical volatility, RGEN falls into the high volatility category

What is RGEN 1-year volatility 1-year high?

RGEN 1-year volatility reached a 1-year high of 53.65% on October 31, 2025

What is RGEN 1-year volatility 1-year low?

RGEN 1-year volatility reached a 1-year low of 43.44% on April 13, 2026

RGEN Stock Volatility History & Chart Since 1986

10-Day

67.28%

October 6, 2026

Summary

Current Value: As of today, RGEN 10-day volatility is 67.28%, up +19.35% on October 6, 2026
Value Category: Based on its current 10-day historical volatility, RGEN falls into the extreme volatility category
1-Year High: RGEN 10-day volatility reached a 1-year high of 76.77% on August 3, 2026
1-Year Low: RGEN 10-day volatility reached a 1-year low of 19.99% on January 2, 2026

10-Day Volatility Chart

Performance

RGEN Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
10-Day Volatility	Oct 6, 26	67.28%	+19.4%	+67.0%	-0.3%	+221.9%	+5.8%	+156.4%	+55.4%
1-Month Volatility	Oct 6, 26	51.93%	+17.6%	+33.8%	-2.5%	+120.1%	-7.0%	+52.1%	+33.1%
3-Month Volatility	Oct 6, 26	49.29%	+6.5%	-0.8%	-10.4%	+35.2%	-5.1%	+29.6%	+40.1%
1-Year Volatility	Oct 6, 26	45.71%	+1.5%	-1.1%	-1.6%	-9.6%	-14.5%	-9.0%	+8.8%
14-Day RSI	Oct 6, 26	46.78	-20.9%	-7.1%	-20.4%	-12.6%	-30.8%	+15.3%	+16.2%
Beta	Oct 6, 26	1.14	-1.7%	-6.6%	-8.1%	-20.3%	-21.9%	-22.4%	+9.6%
ATR	Oct 6, 26	$8.83	+10.8%	+19.0%	+35.7%	+78.7%	+58.5%	+70.2%	-16.4%
Price	Oct 6, 26	$174.86	-7.7%	+4.3%	+25.1%	+6.7%	+19.8%	+13.8%	-35.8%
200-Day SMA	Oct 6, 26	$143.76	+0.1%	+1.3%	+3.2%	+6.2%	+6.7%	-13.9%	-34.4%
50-Day SMA	Oct 6, 26	$171.69	+0.5%	+10.3%	+38.4%	+8.2%	+39.1%	+3.9%	-38.1%
20-Day SMA	Oct 6, 26	$180.11	+0.2%	+4.0%	+33.5%	+10.6%	+40.3%	+12.8%	-38.9%

10-Day Volatility History

Date	Value	Change
Oct 7, 2026	67.28%	+221.9%
Dec 31, 2025	20.90%	-40.3%
Dec 31, 2024	34.98%	+23.6%
Dec 31, 2023	28.31%	-24.9%
Dec 31, 2022	37.68%	-1.8%
Dec 31, 2021	38.39%	+8.1%
Dec 31, 2020	35.52%	+79.1%
Dec 31, 2019	19.83%	-65.5%
Dec 31, 2018	57.54%	+157.8%
Dec 31, 2017	22.32%	-17.9%
Dec 31, 2016	27.18%	-35.9%
Dec 31, 2015	42.43%	-17.4%
Dec 31, 2014	51.37%	+30.0%
Dec 31, 2013	39.52%	+39.0%
Dec 31, 2012	28.44%	+39.2%
Dec 31, 2011	20.43%	-57.9%
Dec 31, 2010	48.51%	+121.1%
Dec 31, 2009	21.94%	-52.0%
Dec 31, 2008	45.72%	+115.6%
Dec 31, 2007	21.21%	-34.3%
Dec 31, 2006	32.27%	-68.0%

Date	Value	Change
Dec 31, 2005	100.88%	+7.4%
Dec 31, 2004	93.94%	+68.5%
Dec 31, 2003	55.74%	-15.7%
Dec 31, 2002	66.14%	+44.0%
Dec 31, 2001	45.92%	-73.3%
Dec 31, 2000	172.23%	+342.3%
Dec 31, 1999	38.94%	-54.7%
Dec 31, 1998	85.91%	-18.2%
Dec 31, 1997	105.04%	-13.1%
Dec 31, 1996	120.91%	-9.6%
Dec 31, 1995	133.80%	+30.2%
Dec 31, 1994	102.79%	-11.7%
Dec 31, 1993	116.35%	+132.1%
Dec 31, 1992	50.14%	-46.6%
Dec 31, 1991	93.93%	+3.6%
Dec 31, 1990	90.67%	+91.2%
Dec 31, 1989	47.43%	-22.6%
Dec 31, 1988	61.29%	+20.5%
Dec 31, 1987	50.85%	-24.5%
Dec 31, 1986	67.33%	-

FAQ

What is the current 10-day volatility of RGEN?: As of today, RGEN 10-day volatility is 67.28%
What 10-day volatility category does RGEN fall into?: Based on its current 10-day historical volatility, RGEN falls into the extreme volatility category
What is RGEN 10-day volatility 1-year high?: RGEN 10-day volatility reached a 1-year high of 76.77% on August 3, 2026
What is RGEN 10-day volatility 1-year low?: RGEN 10-day volatility reached a 1-year low of 19.99% on January 2, 2026

1-Month

51.93%

October 6, 2026

Summary

Current Value: As of today, RGEN 1-month volatility is 51.93%, up +17.60% on October 6, 2026
Value Category: Based on its current 1-month historical volatility, RGEN falls into the high volatility category
1-Year High: RGEN 1-month volatility reached a 1-year high of 63.95% on May 13, 2026
1-Year Low: RGEN 1-month volatility reached a 1-year low of 23.02% on January 20, 2026

Performance

RGEN Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Month Volatility	Oct 6, 26	51.93%	+17.6%	+33.8%	-2.5%	+120.1%	-7.0%	+52.1%	+33.1%
10-Day Volatility	Oct 6, 26	67.28%	+19.4%	+67.0%	-0.3%	+221.9%	+5.8%	+156.4%	+55.4%
3-Month Volatility	Oct 6, 26	49.29%	+6.5%	-0.8%	-10.4%	+35.2%	-5.1%	+29.6%	+40.1%
1-Year Volatility	Oct 6, 26	45.71%	+1.5%	-1.1%	-1.6%	-9.6%	-14.5%	-9.0%	+8.8%
14-Day RSI	Oct 6, 26	46.78	-20.9%	-7.1%	-20.4%	-12.6%	-30.8%	+15.3%	+16.2%
Beta	Oct 6, 26	1.14	-1.7%	-6.6%	-8.1%	-20.3%	-21.9%	-22.4%	+9.6%
ATR	Oct 6, 26	$8.83	+10.8%	+19.0%	+35.7%	+78.7%	+58.5%	+70.2%	-16.4%
Price	Oct 6, 26	$174.86	-7.7%	+4.3%	+25.1%	+6.7%	+19.8%	+13.8%	-35.8%
200-Day SMA	Oct 6, 26	$143.76	+0.1%	+1.3%	+3.2%	+6.2%	+6.7%	-13.9%	-34.4%
50-Day SMA	Oct 6, 26	$171.69	+0.5%	+10.3%	+38.4%	+8.2%	+39.1%	+3.9%	-38.1%
20-Day SMA	Oct 6, 26	$180.11	+0.2%	+4.0%	+33.5%	+10.6%	+40.3%	+12.8%	-38.9%

1-Month Volatility History

Date	Value	Change
Oct 7, 2026	51.93%	+110.0%
Dec 31, 2025	24.73%	-39.3%
Dec 31, 2024	40.74%	-8.3%
Dec 31, 2023	44.43%	-19.2%
Dec 31, 2022	55.02%	+9.3%
Dec 31, 2021	50.34%	+58.4%
Dec 31, 2020	31.79%	+58.1%
Dec 31, 2019	20.11%	-53.6%
Dec 31, 2018	43.30%	+78.0%
Dec 31, 2017	24.33%	-27.8%
Dec 31, 2016	33.72%	-24.6%
Dec 31, 2015	44.70%	-25.2%
Dec 31, 2014	59.79%	+83.0%
Dec 31, 2013	32.68%	+3.3%
Dec 31, 2012	31.63%	+26.0%
Dec 31, 2011	25.11%	-31.8%
Dec 31, 2010	36.81%	-38.6%
Dec 31, 2009	59.95%	-25.2%
Dec 31, 2008	80.20%	+152.0%
Dec 31, 2007	31.82%	+13.2%
Dec 31, 2006	28.12%	-63.6%

Date	Value	Change
Dec 31, 2005	77.17%	+5.5%
Dec 31, 2004	73.13%	+15.6%
Dec 31, 2003	63.26%	+22.8%
Dec 31, 2002	51.50%	+3.7%
Dec 31, 2001	49.68%	-59.7%
Dec 31, 2000	123.29%	+3.2%
Dec 31, 1999	119.51%	+63.2%
Dec 31, 1998	73.24%	-21.6%
Dec 31, 1997	93.47%	-8.9%
Dec 31, 1996	102.61%	-1.8%
Dec 31, 1995	104.54%	+11.1%
Dec 31, 1994	94.06%	-6.6%
Dec 31, 1993	100.76%	+64.0%
Dec 31, 1992	61.43%	-20.3%
Dec 31, 1991	77.05%	-18.2%
Dec 31, 1990	94.24%	+131.9%
Dec 31, 1989	40.64%	-33.3%
Dec 31, 1988	60.96%	-29.7%
Dec 31, 1987	86.77%	-7.6%
Dec 31, 1986	93.93%	-

FAQ

What is the current 1-month volatility of RGEN?: As of today, RGEN 1-month volatility is 51.93%
What 1-month volatility category does RGEN fall into?: Based on its current 1-month historical volatility, RGEN falls into the high volatility category
What is RGEN 1-month volatility 1-year high?: RGEN 1-month volatility reached a 1-year high of 63.95% on May 13, 2026
What is RGEN 1-month volatility 1-year low?: RGEN 1-month volatility reached a 1-year low of 23.02% on January 20, 2026

3-Month

49.29%

October 6, 2026

Summary

Current Value: As of today, RGEN 3-month volatility is 49.29%, up +6.48% on October 6, 2026
Value Category: Based on its current 3-month historical volatility, RGEN falls into the high volatility category
1-Year High: RGEN 3-month volatility reached a 1-year high of 55.41% on June 29, 2026
1-Year Low: RGEN 3-month volatility reached a 1-year low of 29.84% on February 25, 2026

Performance

RGEN Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
3-Month Volatility	Oct 6, 26	49.29%	+6.5%	-0.8%	-10.4%	+35.2%	-5.1%	+29.6%	+40.1%
10-Day Volatility	Oct 6, 26	67.28%	+19.4%	+67.0%	-0.3%	+221.9%	+5.8%	+156.4%	+55.4%
1-Month Volatility	Oct 6, 26	51.93%	+17.6%	+33.8%	-2.5%	+120.1%	-7.0%	+52.1%	+33.1%
1-Year Volatility	Oct 6, 26	45.71%	+1.5%	-1.1%	-1.6%	-9.6%	-14.5%	-9.0%	+8.8%
14-Day RSI	Oct 6, 26	46.78	-20.9%	-7.1%	-20.4%	-12.6%	-30.8%	+15.3%	+16.2%
Beta	Oct 6, 26	1.14	-1.7%	-6.6%	-8.1%	-20.3%	-21.9%	-22.4%	+9.6%
ATR	Oct 6, 26	$8.83	+10.8%	+19.0%	+35.7%	+78.7%	+58.5%	+70.2%	-16.4%
Price	Oct 6, 26	$174.86	-7.7%	+4.3%	+25.1%	+6.7%	+19.8%	+13.8%	-35.8%
200-Day SMA	Oct 6, 26	$143.76	+0.1%	+1.3%	+3.2%	+6.2%	+6.7%	-13.9%	-34.4%
50-Day SMA	Oct 6, 26	$171.69	+0.5%	+10.3%	+38.4%	+8.2%	+39.1%	+3.9%	-38.1%
20-Day SMA	Oct 6, 26	$180.11	+0.2%	+4.0%	+33.5%	+10.6%	+40.3%	+12.8%	-38.9%

3-Month Volatility History

Date	Value	Change
Oct 7, 2026	49.29%	+22.6%
Dec 31, 2025	40.22%	-20.0%
Dec 31, 2024	50.27%	-18.3%
Dec 31, 2023	61.56%	-6.7%
Dec 31, 2022	65.97%	+41.9%
Dec 31, 2021	46.49%	+4.3%
Dec 31, 2020	44.58%	+51.0%
Dec 31, 2019	29.52%	-43.1%
Dec 31, 2018	51.85%	+77.1%
Dec 31, 2017	29.27%	-27.0%
Dec 31, 2016	40.08%	-39.2%
Dec 31, 2015	65.89%	+47.0%
Dec 31, 2014	44.82%	+23.8%
Dec 31, 2013	36.21%	-17.4%
Dec 31, 2012	43.85%	+56.9%
Dec 31, 2011	27.95%	-32.2%
Dec 31, 2010	41.21%	-3.4%
Dec 31, 2009	42.68%	-53.6%
Dec 31, 2008	92.04%	+208.0%
Dec 31, 2007	29.88%	-16.9%
Dec 31, 2006	35.94%	-43.8%

Date	Value	Change
Dec 31, 2005	63.99%	-26.0%
Dec 31, 2004	86.42%	+49.1%
Dec 31, 2003	57.98%	-3.6%
Dec 31, 2002	60.14%	-26.2%
Dec 31, 2001	81.50%	-23.9%
Dec 31, 2000	107.15%	-2.4%
Dec 31, 1999	109.73%	-12.3%
Dec 31, 1998	125.16%	+59.4%
Dec 31, 1997	78.52%	-19.5%
Dec 31, 1996	97.58%	-5.8%
Dec 31, 1995	103.59%	+10.2%
Dec 31, 1994	94.00%	+0.6%
Dec 31, 1993	93.41%	+37.6%
Dec 31, 1992	67.87%	-39.4%
Dec 31, 1991	111.95%	+10.0%
Dec 31, 1990	101.77%	+93.9%
Dec 31, 1989	52.49%	-22.5%
Dec 31, 1988	67.72%	-45.3%
Dec 31, 1987	123.83%	+64.0%
Dec 31, 1986	75.49%	-

FAQ

What is the current 3-month volatility of RGEN?: As of today, RGEN 3-month volatility is 49.29%
What 3-month volatility category does RGEN fall into?: Based on its current 3-month historical volatility, RGEN falls into the high volatility category
What is RGEN 3-month volatility 1-year high?: RGEN 3-month volatility reached a 1-year high of 55.41% on June 29, 2026
What is RGEN 3-month volatility 1-year low?: RGEN 3-month volatility reached a 1-year low of 29.84% on February 25, 2026

1-Year

45.71%

October 6, 2026

Summary

Current Value: As of today, RGEN 1-year volatility is 45.71%, up +1.49% on October 6, 2026
Value Category: Based on its current 1-year historical volatility, RGEN falls into the high volatility category
1-Year High: RGEN 1-year volatility reached a 1-year high of 53.65% on October 31, 2025
1-Year Low: RGEN 1-year volatility reached a 1-year low of 43.44% on April 13, 2026

Performance

RGEN Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Year Volatility	Oct 6, 26	45.71%	+1.5%	-1.1%	-1.6%	-9.6%	-14.5%	-9.0%	+8.8%
10-Day Volatility	Oct 6, 26	67.28%	+19.4%	+67.0%	-0.3%	+221.9%	+5.8%	+156.4%	+55.4%
1-Month Volatility	Oct 6, 26	51.93%	+17.6%	+33.8%	-2.5%	+120.1%	-7.0%	+52.1%	+33.1%
3-Month Volatility	Oct 6, 26	49.29%	+6.5%	-0.8%	-10.4%	+35.2%	-5.1%	+29.6%	+40.1%
1-Year Volatility	Oct 6, 26	45.71%	+1.5%	-1.1%	-1.6%	-9.6%	-14.5%	-9.0%	+8.8%
14-Day RSI	Oct 6, 26	46.78	-20.9%	-7.1%	-20.4%	-12.6%	-30.8%	+15.3%	+16.2%
Beta	Oct 6, 26	1.14	-1.7%	-6.6%	-8.1%	-20.3%	-21.9%	-22.4%	+9.6%
ATR	Oct 6, 26	$8.83	+10.8%	+19.0%	+35.7%	+78.7%	+58.5%	+70.2%	-16.4%
Price	Oct 6, 26	$174.86	-7.7%	+4.3%	+25.1%	+6.7%	+19.8%	+13.8%	-35.8%
200-Day SMA	Oct 6, 26	$143.76	+0.1%	+1.3%	+3.2%	+6.2%	+6.7%	-13.9%	-34.4%
50-Day SMA	Oct 6, 26	$171.69	+0.5%	+10.3%	+38.4%	+8.2%	+39.1%	+3.9%	-38.1%
20-Day SMA	Oct 6, 26	$180.11	+0.2%	+4.0%	+33.5%	+10.6%	+40.3%	+12.8%	-38.9%

1-Year Volatility History

Date	Value	Change
Oct 7, 2026	45.71%	-9.6%
Dec 31, 2025	50.57%	+7.2%
Dec 31, 2024	47.17%	-5.4%
Dec 31, 2023	49.88%	-17.3%
Dec 31, 2022	60.30%	+39.9%
Dec 31, 2021	43.09%	-12.3%
Dec 31, 2020	49.12%	+21.1%
Dec 31, 2019	40.56%	+12.8%
Dec 31, 2018	35.97%	+6.9%
Dec 31, 2017	33.64%	-27.3%
Dec 31, 2016	46.25%	-25.8%
Dec 31, 2015	62.35%	+30.7%
Dec 31, 2014	47.72%	+30.9%
Dec 31, 2013	36.45%	-41.8%
Dec 31, 2012	62.63%	+51.9%
Dec 31, 2011	41.24%	-7.7%
Dec 31, 2010	44.66%	-0.6%
Dec 31, 2009	44.92%	-30.2%
Dec 31, 2008	64.39%	+59.0%
Dec 31, 2007	40.50%	-28.6%
Dec 31, 2006	56.69%	-27.1%

Date	Value	Change
Dec 31, 2005	77.74%	-13.4%
Dec 31, 2004	89.79%	+41.8%
Dec 31, 2003	63.34%	-19.4%
Dec 31, 2002	78.59%	-31.3%
Dec 31, 2001	114.37%	-12.9%
Dec 31, 2000	131.26%	+36.6%
Dec 31, 1999	96.06%	-35.5%
Dec 31, 1998	148.95%	+41.4%
Dec 31, 1997	105.31%	-26.2%
Dec 31, 1996	142.76%	+6.8%
Dec 31, 1995	133.70%	+38.5%
Dec 31, 1994	96.52%	+11.5%
Dec 31, 1993	86.60%	+26.6%
Dec 31, 1992	68.40%	-14.3%
Dec 31, 1991	79.84%	+6.3%
Dec 31, 1990	75.13%	+27.1%
Dec 31, 1989	59.10%	-15.1%
Dec 31, 1988	69.63%	-20.1%
Dec 31, 1987	87.19%	+35.8%
Dec 31, 1986	64.20%	-

FAQ

What is the current 1-year volatility of RGEN?: As of today, RGEN 1-year volatility is 45.71%
What 1-year volatility category does RGEN fall into?: Based on its current 1-year historical volatility, RGEN falls into the high volatility category
What is RGEN 1-year volatility 1-year high?: RGEN 1-year volatility reached a 1-year high of 53.65% on October 31, 2025
What is RGEN 1-year volatility 1-year low?: RGEN 1-year volatility reached a 1-year low of 43.44% on April 13, 2026

Data Sources & References

RGEN Official Website www.repligen.com
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/730272/000119312526076528/0001193125-26-076528-index.htm
RGEN Profile on Yahoo Finance finance.yahoo.com/quote/RGEN
RGEN Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/rgen