ATN International (ATNI) Stock Chart & Stock Price History $15.58 +0.36 (+2.33%) As of 09:55 AM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock ATN International Stock Price Performance The ATN International (ATNI) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 48.46%, with a year-to-date return of -7.35%. In the past month, the stock has decreased 2.78%, reflecting recent market activity. As of the latest close, ATN International traded at $15.22 with a market cap of $232.26 million and volume of 86,682 shares. Five years ago, the stock traded at $50.09, representing a 68.91% decrease over that period. At the time, it had a market cap of $799.84 million and a volume of 95,469 shares. Receive ATNI Stock News and Ratings via EmailSign-up to receive the latest news and ratings for ATN International 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. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. 5 Day Performance+2.00%1 Month Performance-2.78%3 Month Performance+2.06%Year-To-Date Performance-7.35%1 Year Performance-48.46%5 Year Performance-68.91% ATNI Stock Chart for Monday, September, 22, 2025 ATNI Chart by TradingView ATN International 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 Capitalization09/19/2025$15.64$15.22-2.69%$15.96$15.0786,682 shs$232.26 million09/18/2025$15.27$15.64+2.42%$15.82$15.2531,092 shs$238.62 million09/17/2025$15.40$15.27-0.84%$16.10$15.2530,035 shs$233.02 million09/16/2025$15.57$15.40-1.09%$15.62$15.3125,175 shs$235.00 million09/15/2025$15.57$15.57$15.83$15.4422,947 shs$237.55 million09/12/2025$16.38$15.57-4.95%$17.01$15.2226,990 shs$237.55 million09/11/2025$15.43$16.38+6.16%$16.55$15.3236,335 shs$249.96 million09/10/2025$15.76$15.43-2.09%$16.21$15.0018,788 shs$235.46 million09/09/2025$16.25$15.76-3.02%$16.47$15.7619,717 shs$240.45 million09/08/2025$16.07$16.25+1.12%$16.67$15.5059,419 shs$247.98 million Get the Latest News and Ratings for ATNI and Related StocksEnter your email address below to receive the latest news and analysts' ratings for ATN International and its competitors with MarketBeat's FREE daily newsletter. 09/05/2025$16.67$16.07-3.60%$17.54$15.9826,697 shs$245.23 million09/04/2025$15.82$16.67+5.37%$16.67$15.6930,296 shs$254.38 million09/03/2025$15.91$15.82-0.57%$16.21$15.5434,001 shs$241.41 million09/02/2025$17.00$15.91-6.41%$16.96$15.8536,466 shs$259.37 million09/01/2025$17.00$17.00$17.12$16.0157,954 shs$259.42 million08/29/2025$16.01$17.00+6.18%$17.12$16.0157,954 shs$259.42 million08/28/2025$15.98$16.01+0.19%$16.38$15.8625,615 shs$244.31 million08/27/2025$16.18$15.98-1.24%$16.30$15.4929,064 shs$243.81 million08/26/2025$15.91$16.18+1.70%$16.48$16.0430,603 shs$246.91 million08/25/2025$16.02$15.91-0.69%$16.39$15.7336,930 shs$242.79 million08/22/2025$15.76$16.02+1.65%$16.50$15.7641,181 shs$244.47 million08/21/2025$15.63$15.76+0.83%$15.91$15.4223,722 shs$240.45 million Related Companies AT&T Stock Price Chart Verizon Communications Stock Price Chart Lumen Technologies Stock Price Chart IDT Stock Price Chart Nexxen International Stock Price Chart Spok Stock Price Chart Old Market Capital Stock Price Chart Siyata Mobile Stock Price Chart Cambium Networks Stock Price Chart T-Mobile US Stock Price Chart Receive ATNI Stock News and Ratings via EmailSign-up to receive the latest news and ratings for ATN International and its competitors with MarketBeat's FREE daily newsletter. 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