Atmos Energy (ATO) Stock Chart & Stock Price History $176.45 +1.52 (+0.87%) Closing price 10/10/2025 03:59 PM EasternExtended Trading$175.23 -1.22 (-0.69%) As of 10/10/2025 07:54 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Atmos Energy Stock Price Performance The Atmos Energy (ATO) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 26.61%, with a year-to-date return of 26.70%. In the past month, the stock has increased 5.98%, reflecting recent market activity. As of the latest close, Atmos Energy traded at $176.45 with a market cap of $28.32 billion and volume of 639,830 shares. Five years ago, the stock traded at $96.51, representing a 82.83% increase over that period. At the time, it had a market cap of $11.90 billion and a volume of 1.26 million shares. Receive ATO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Atmos Energy and its competitors with MarketBeat's FREE daily newsletter. Subscribe Now View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. 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Read our full terms of service and privacy policy. 5 Day Performance+1.82%1 Month Performance+5.98%3 Month Performance+14.38%Year-To-Date Performance+26.70%1 Year Performance+26.61%5 Year Performance+82.83% ATO Stock Chart for Saturday, October, 11, 2025 ATO Chart by TradingView Atmos Energy Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization10/10/2025$174.95$176.45+0.86%$177.83$175.29639,830 shs$28.32 billion10/09/2025$175.83$174.95-0.50%$177.01$174.72500,979 shs$28.08 billion10/08/2025$174.83$175.83+0.57%$176.11$173.22740,298 shs$28.22 billion10/07/2025$173.30$174.83+0.88%$175.49$173.54643,522 shs$28.06 billion10/06/2025$170.07$173.30+1.90%$173.55$170.19843,940 shs$27.82 billion10/03/2025$168.75$170.07+0.78%$170.99$168.90607,158 shs$27.30 billion10/02/2025$169.29$168.75-0.32%$169.12$167.62578,704 shs$27.09 billion10/01/2025$170.79$169.29-0.88%$171.16$169.09851,393 shs$27.17 billion09/30/2025$169.43$170.79+0.80%$171.20$169.37866,714 shs$27.42 billion09/29/2025$168.49$169.43+0.56%$169.70$167.38753,065 shs$27.20 billion Get the Latest News and Ratings for ATO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Atmos Energy and its competitors with MarketBeat's FREE daily newsletter. 09/26/2025$166.48$168.49+1.21%$169.96$167.04687,287 shs$27.05 billion09/25/2025$166.68$166.48-0.12%$168.86$166.00758,678 shs$26.72 billion09/24/2025$166.22$166.68+0.28%$167.24$166.08621,451 shs$26.76 billion09/23/2025$163.05$166.22+1.94%$166.49$162.70822,225 shs$26.68 billion09/22/2025$162.99$163.05+0.04%$163.60$162.20778,089 shs$26.17 billion09/19/2025$162.54$162.99+0.28%$163.94$161.451.61 million shs$26.16 billion09/18/2025$163.46$162.54-0.56%$163.12$160.101.00 million shs$26.09 billion09/17/2025$163.09$163.46+0.23%$164.87$162.531.05 million shs$26.24 billion09/16/2025$165.94$163.09-1.72%$165.75$162.901.18 million shs$26.18 billion09/15/2025$166.45$165.94-0.31%$166.60$165.69680,350 shs$26.64 billion09/12/2025$166.49$166.45-0.02%$167.14$165.97414,826 shs$26.72 billion09/11/2025$163.85$166.49+1.61%$166.55$162.71692,124 shs$26.73 billion09/10/2025$164.10$163.85-0.15%$164.95$163.62703,192 shs$26.30 billion Related Companies LNT Stock Price Chart AEE Stock Price Chart AWK Stock Price Chart MDU Stock Price Chart NFG Stock Price Chart NJR Stock Price Chart OGS Stock Price Chart SR Stock Price Chart UGI Stock Price Chart WEC Stock Price Chart Receive ATO Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Atmos Energy and its competitors with MarketBeat's FREE daily newsletter. 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