What is the current 10-day volatility of ACM?

As of today, ACM 10-day volatility is 27.25%

What 10-day volatility category does ACM fall into?

Based on its current 10-day historical volatility, ACM falls into the moderate volatility category

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

ACM 10-day volatility reached a 1-year high of 83.50% on February 26, 2026

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

ACM 10-day volatility reached a 1-year low of 11.54% on December 30, 2025

What is the current 1-month volatility of ACM?

As of today, ACM 1-month volatility is 26.34%

What 1-month volatility category does ACM fall into?

Based on its current 1-month historical volatility, ACM falls into the moderate volatility category

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

ACM 1-month volatility reached a 1-year high of 62.63% on March 4, 2026

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

ACM 1-month volatility reached a 1-year low of 15.91% on January 2, 2026

What is the current 3-month volatility of ACM?

As of today, ACM 3-month volatility is 40.62%

What 3-month volatility category does ACM fall into?

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

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

ACM 3-month volatility reached a 1-year high of 43.37% on September 25, 2026

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

ACM 3-month volatility reached a 1-year low of 19.50% on November 14, 2025

What is the current 1-year volatility of ACM?

As of today, ACM 1-year volatility is 37.70%

What 1-year volatility category does ACM fall into?

Based on its current 1-year historical volatility, ACM falls into the moderate volatility category

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

ACM 1-year volatility reached a 1-year high of 37.70% on November 5, 2026

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

ACM 1-year volatility reached a 1-year low of 22.92% on November 14, 2025

AECOM (ACM) Stock Volatility History & Chart Since 2007

10-Day

27.25%

November 5, 2026

Summary

Current Value: As of today, ACM 10-day volatility is 27.25%, up +26.10% on November 5, 2026
Value Category: Based on its current 10-day historical volatility, ACM falls into the moderate volatility category
1-Year High: ACM 10-day volatility reached a 1-year high of 83.50% on February 26, 2026
1-Year Low: ACM 10-day volatility reached a 1-year low of 11.54% on December 30, 2025

10-Day Volatility Chart

Performance

ACM Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
10-Day Volatility	Nov 5, 26	27.25%	+26.1%	-25.3%	-29.6%	+102.9%	+66.7%	+25.5%	-12.6%
1-Month Volatility	Nov 5, 26	26.34%	+6.5%	-16.3%	-18.8%	+51.2%	+21.0%	-5.0%	+0.3%
3-Month Volatility	Nov 5, 26	40.62%	+0.4%	-3.4%	+6.9%	+27.6%	+106.5%	+73.4%	+38.6%
1-Year Volatility	Nov 5, 26	37.70%	+0.1%	+1.1%	+13.3%	+42.0%	+58.0%	+74.3%	+34.1%
14-Day RSI	Nov 5, 26	66.65	-10.8%	+66.8%	+8.2%	+176.9%	+26.9%	+36.1%	+6.3%
Beta	Nov 5, 26	0.81	-4.7%	-11.0%	-2.4%	+5.2%	+2.5%	0.0%	-38.6%
ATR	Nov 5, 26	$1.94	+5.3%	-8.1%	-11.7%	-11.6%	-27.9%	+11.5%	+16.8%
Price	Nov 5, 26	$66.72	-2.2%	+11.7%	-10.9%	-30.0%	-49.5%	-15.6%	-4.6%
200-Day SMA	Nov 5, 26	$75.52	-0.2%	-5.3%	-17.2%	-33.3%	-32.5%	-10.3%	+19.6%
50-Day SMA	Nov 5, 26	$62.25	+0.1%	-5.2%	-11.4%	-45.3%	-52.0%	-24.2%	-5.2%
20-Day SMA	Nov 5, 26	$61.51	+0.6%	-0.5%	-12.9%	-37.8%	-53.5%	-22.1%	-7.5%

10-Day Volatility History

Date	Value	Change
Nov 5, 2026	27.25%	+102.9%
Dec 31, 2025	13.43%	-22.9%
Dec 31, 2024	17.43%	+4.4%
Dec 31, 2023	16.70%	+8.4%
Dec 31, 2022	15.40%	-10.4%
Dec 31, 2021	17.18%	+29.6%
Dec 31, 2020	13.26%	-3.6%
Dec 31, 2019	13.75%	-64.9%
Dec 31, 2018	39.16%	+177.1%
Dec 31, 2017	14.13%	+16.7%

Date	Value	Change
Dec 31, 2016	12.11%	-53.7%
Dec 31, 2015	26.14%	+8.4%
Dec 31, 2014	24.12%	+47.3%
Dec 31, 2013	16.38%	+52.5%
Dec 31, 2012	10.74%	-62.5%
Dec 31, 2011	28.66%	+96.2%
Dec 31, 2010	14.61%	-12.0%
Dec 31, 2009	16.61%	-76.2%
Dec 31, 2008	69.74%	+82.2%
Dec 31, 2007	38.28%	-

FAQ

What is the current 10-day volatility of ACM?: As of today, ACM 10-day volatility is 27.25%
What 10-day volatility category does ACM fall into?: Based on its current 10-day historical volatility, ACM falls into the moderate volatility category
What is ACM 10-day volatility 1-year high?: ACM 10-day volatility reached a 1-year high of 83.50% on February 26, 2026
What is ACM 10-day volatility 1-year low?: ACM 10-day volatility reached a 1-year low of 11.54% on December 30, 2025

1-Month

26.34%

November 5, 2026

Summary

Current Value: As of today, ACM 1-month volatility is 26.34%, up +6.47% on November 5, 2026
Value Category: Based on its current 1-month historical volatility, ACM falls into the moderate volatility category
1-Year High: ACM 1-month volatility reached a 1-year high of 62.63% on March 4, 2026
1-Year Low: ACM 1-month volatility reached a 1-year low of 15.91% on January 2, 2026

Performance

ACM Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Month Volatility	Nov 5, 26	26.34%	+6.5%	-16.3%	-18.8%	+51.2%	+21.0%	-5.0%	+0.3%
10-Day Volatility	Nov 5, 26	27.25%	+26.1%	-25.3%	-29.6%	+102.9%	+66.7%	+25.5%	-12.6%
3-Month Volatility	Nov 5, 26	40.62%	+0.4%	-3.4%	+6.9%	+27.6%	+106.5%	+73.4%	+38.6%
1-Year Volatility	Nov 5, 26	37.70%	+0.1%	+1.1%	+13.3%	+42.0%	+58.0%	+74.3%	+34.1%
14-Day RSI	Nov 5, 26	66.65	-10.8%	+66.8%	+8.2%	+176.9%	+26.9%	+36.1%	+6.3%
Beta	Nov 5, 26	0.81	-4.7%	-11.0%	-2.4%	+5.2%	+2.5%	0.0%	-38.6%
ATR	Nov 5, 26	$1.94	+5.3%	-8.1%	-11.7%	-11.6%	-27.9%	+11.5%	+16.8%
Price	Nov 5, 26	$66.72	-2.2%	+11.7%	-10.9%	-30.0%	-49.5%	-15.6%	-4.6%
200-Day SMA	Nov 5, 26	$75.52	-0.2%	-5.3%	-17.2%	-33.3%	-32.5%	-10.3%	+19.6%
50-Day SMA	Nov 5, 26	$62.25	+0.1%	-5.2%	-11.4%	-45.3%	-52.0%	-24.2%	-5.2%
20-Day SMA	Nov 5, 26	$61.51	+0.6%	-0.5%	-12.9%	-37.8%	-53.5%	-22.1%	-7.5%

1-Month Volatility History

Date	Value	Change
Nov 5, 2026	26.34%	+50.3%
Dec 31, 2025	17.53%	+35.6%
Dec 31, 2024	12.93%	-2.3%
Dec 31, 2023	13.24%	-20.4%
Dec 31, 2022	16.64%	-28.2%
Dec 31, 2021	23.16%	-16.0%
Dec 31, 2020	27.57%	+98.5%
Dec 31, 2019	13.89%	-59.7%
Dec 31, 2018	34.45%	+113.6%
Dec 31, 2017	16.13%	-25.7%

Date	Value	Change
Dec 31, 2016	21.72%	-21.3%
Dec 31, 2015	27.59%	-25.9%
Dec 31, 2014	37.23%	+74.7%
Dec 31, 2013	21.31%	+48.5%
Dec 31, 2012	14.35%	-49.8%
Dec 31, 2011	28.56%	+32.5%
Dec 31, 2010	21.55%	-10.9%
Dec 31, 2009	24.19%	-74.8%
Dec 31, 2008	95.99%	+169.5%
Dec 31, 2007	35.62%	-

FAQ

What is the current 1-month volatility of ACM?: As of today, ACM 1-month volatility is 26.34%
What 1-month volatility category does ACM fall into?: Based on its current 1-month historical volatility, ACM falls into the moderate volatility category
What is ACM 1-month volatility 1-year high?: ACM 1-month volatility reached a 1-year high of 62.63% on March 4, 2026
What is ACM 1-month volatility 1-year low?: ACM 1-month volatility reached a 1-year low of 15.91% on January 2, 2026

3-Month

40.62%

November 5, 2026

Summary

Current Value: As of today, ACM 3-month volatility is 40.62%, up +0.37% on November 5, 2026
Value Category: Based on its current 3-month historical volatility, ACM falls into the high volatility category
1-Year High: ACM 3-month volatility reached a 1-year high of 43.37% on September 25, 2026
1-Year Low: ACM 3-month volatility reached a 1-year low of 19.50% on November 14, 2025

Performance

ACM Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
3-Month Volatility	Nov 5, 26	40.62%	+0.4%	-3.4%	+6.9%	+27.6%	+106.5%	+73.4%	+38.6%
10-Day Volatility	Nov 5, 26	27.25%	+26.1%	-25.3%	-29.6%	+102.9%	+66.7%	+25.5%	-12.6%
1-Month Volatility	Nov 5, 26	26.34%	+6.5%	-16.3%	-18.8%	+51.2%	+21.0%	-5.0%	+0.3%
1-Year Volatility	Nov 5, 26	37.70%	+0.1%	+1.1%	+13.3%	+42.0%	+58.0%	+74.3%	+34.1%
14-Day RSI	Nov 5, 26	66.65	-10.8%	+66.8%	+8.2%	+176.9%	+26.9%	+36.1%	+6.3%
Beta	Nov 5, 26	0.81	-4.7%	-11.0%	-2.4%	+5.2%	+2.5%	0.0%	-38.6%
ATR	Nov 5, 26	$1.94	+5.3%	-8.1%	-11.7%	-11.6%	-27.9%	+11.5%	+16.8%
Price	Nov 5, 26	$66.72	-2.2%	+11.7%	-10.9%	-30.0%	-49.5%	-15.6%	-4.6%
200-Day SMA	Nov 5, 26	$75.52	-0.2%	-5.3%	-17.2%	-33.3%	-32.5%	-10.3%	+19.6%
50-Day SMA	Nov 5, 26	$62.25	+0.1%	-5.2%	-11.4%	-45.3%	-52.0%	-24.2%	-5.2%
20-Day SMA	Nov 5, 26	$61.51	+0.6%	-0.5%	-12.9%	-37.8%	-53.5%	-22.1%	-7.5%

3-Month Volatility History

Date	Value	Change
Nov 5, 2026	40.62%	+28.6%
Dec 31, 2025	31.59%	+47.5%
Dec 31, 2024	21.42%	-14.3%
Dec 31, 2023	25.00%	-4.7%
Dec 31, 2022	26.23%	-5.5%
Dec 31, 2021	27.77%	-12.0%
Dec 31, 2020	31.56%	+47.7%
Dec 31, 2019	21.37%	-41.6%
Dec 31, 2018	36.60%	+114.8%
Dec 31, 2017	17.04%	-61.3%

Date	Value	Change
Dec 31, 2016	44.01%	+58.5%
Dec 31, 2015	27.76%	-27.5%
Dec 31, 2014	38.28%	+57.1%
Dec 31, 2013	24.36%	-27.5%
Dec 31, 2012	33.58%	-13.2%
Dec 31, 2011	38.68%	+93.2%
Dec 31, 2010	20.02%	-32.5%
Dec 31, 2009	29.65%	-72.1%
Dec 31, 2008	106.12%	+122.3%
Dec 31, 2007	47.73%	-

FAQ

What is the current 3-month volatility of ACM?: As of today, ACM 3-month volatility is 40.62%
What 3-month volatility category does ACM fall into?: Based on its current 3-month historical volatility, ACM falls into the high volatility category
What is ACM 3-month volatility 1-year high?: ACM 3-month volatility reached a 1-year high of 43.37% on September 25, 2026
What is ACM 3-month volatility 1-year low?: ACM 3-month volatility reached a 1-year low of 19.50% on November 14, 2025

1-Year

37.70%

November 5, 2026

Summary

Current Value: As of today, ACM 1-year volatility is 37.70%, up +0.08% on November 5, 2026
Value Category: Based on its current 1-year historical volatility, ACM falls into the moderate volatility category
1-Year High: ACM 1-year volatility reached a 1-year high of 37.70% on November 5, 2026
1-Year Low: ACM 1-year volatility reached a 1-year low of 22.92% on November 14, 2025

Performance

ACM Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Year Volatility	Nov 5, 26	37.70%	+0.1%	+1.1%	+13.3%	+42.0%	+58.0%	+74.3%	+34.1%
10-Day Volatility	Nov 5, 26	27.25%	+26.1%	-25.3%	-29.6%	+102.9%	+66.7%	+25.5%	-12.6%
1-Month Volatility	Nov 5, 26	26.34%	+6.5%	-16.3%	-18.8%	+51.2%	+21.0%	-5.0%	+0.3%
3-Month Volatility	Nov 5, 26	40.62%	+0.4%	-3.4%	+6.9%	+27.6%	+106.5%	+73.4%	+38.6%
1-Year Volatility	Nov 5, 26	37.70%	+0.1%	+1.1%	+13.3%	+42.0%	+58.0%	+74.3%	+34.1%
14-Day RSI	Nov 5, 26	66.65	-10.8%	+66.8%	+8.2%	+176.9%	+26.9%	+36.1%	+6.3%
Beta	Nov 5, 26	0.81	-4.7%	-11.0%	-2.4%	+5.2%	+2.5%	0.0%	-38.6%
ATR	Nov 5, 26	$1.94	+5.3%	-8.1%	-11.7%	-11.6%	-27.9%	+11.5%	+16.8%
Price	Nov 5, 26	$66.72	-2.2%	+11.7%	-10.9%	-30.0%	-49.5%	-15.6%	-4.6%
200-Day SMA	Nov 5, 26	$75.52	-0.2%	-5.3%	-17.2%	-33.3%	-32.5%	-10.3%	+19.6%
50-Day SMA	Nov 5, 26	$62.25	+0.1%	-5.2%	-11.4%	-45.3%	-52.0%	-24.2%	-5.2%
20-Day SMA	Nov 5, 26	$61.51	+0.6%	-0.5%	-12.9%	-37.8%	-53.5%	-22.1%	-7.5%

1-Year Volatility History

Date	Value	Change
Nov 5, 2026	37.70%	+42.0%
Dec 31, 2025	26.55%	+21.1%
Dec 31, 2024	21.93%	+0.9%
Dec 31, 2023	21.74%	-25.5%
Dec 31, 2022	29.19%	+4.6%
Dec 31, 2021	27.90%	-49.7%
Dec 31, 2020	55.42%	+147.7%
Dec 31, 2019	22.37%	-14.5%
Dec 31, 2018	26.17%	-1.1%
Dec 31, 2017	26.47%	-26.0%

Date	Value	Change
Dec 31, 2016	35.78%	+24.7%
Dec 31, 2015	28.70%	-0.1%
Dec 31, 2014	28.73%	-4.9%
Dec 31, 2013	30.21%	-16.9%
Dec 31, 2012	36.34%	-0.2%
Dec 31, 2011	36.43%	+26.5%
Dec 31, 2010	28.79%	-40.4%
Dec 31, 2009	48.34%	-27.2%
Dec 31, 2008	66.39%	+51.2%
Dec 31, 2007	43.92%	-

FAQ

What is the current 1-year volatility of ACM?: As of today, ACM 1-year volatility is 37.70%
What 1-year volatility category does ACM fall into?: Based on its current 1-year historical volatility, ACM falls into the moderate volatility category
What is ACM 1-year volatility 1-year high?: ACM 1-year volatility reached a 1-year high of 37.70% on November 5, 2026
What is ACM 1-year volatility 1-year low?: ACM 1-year volatility reached a 1-year low of 22.92% on November 14, 2025

Data Sources & References

ACM Official Website aecom.com
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/868857/000086885725000013/0000868857-25-000013-index.htm
ACM Profile on Yahoo Finance finance.yahoo.com/quote/ACM
ACM Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/acm