Lennox International (LII) Stock Chart & Stock Price History $591.18 +20.54 (+3.60%) Closing price 08/22/2025 03:59 PM EasternExtended Trading$591.88 +0.70 (+0.12%) As of 08/22/2025 05:01 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 Lennox International Stock Price Performance The Lennox International (LII) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 1.18%, with a year-to-date return of -2.97%. In the past month, the stock has decreased 10.63%, reflecting recent market activity. As of the latest close, Lennox International traded at $591.18 with a market cap of $20.76 billion and volume of 435,601 shares. Five years ago, the stock traded at $277.39, representing a 113.12% increase over that period. At the time, it had a market cap of $10.70 billion and a volume of 161,688 shares. Receive LII Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Lennox International and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-1.36%1 Month Performance-10.63%3 Month Performance+4.22%Year-To-Date Performance-2.97%1 Year Performance+1.18%5 Year Performance+113.12% LII Stock Chart for Saturday, August, 23, 2025 LII Chart by TradingView Lennox 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 Capitalization08/22/2025$570.15$591.18+3.69%$597.81$570.77435,601 shs$20.76 billion08/21/2025$589.70$570.15-3.32%$586.01$567.14535,383 shs$20.02 billion08/20/2025$612.38$589.70-3.70%$615.75$588.53747,754 shs$20.71 billion08/19/2025$599.34$612.38+2.18%$616.50$599.17363,768 shs$21.51 billion08/18/2025$591.99$599.34+1.24%$601.34$592.00194,025 shs$21.05 billion08/15/2025$600.29$591.99-1.38%$602.04$591.64237,443 shs$20.79 billion08/14/2025$612.68$600.29-2.02%$604.85$593.56281,853 shs$21.08 billion08/13/2025$590.54$612.68+3.75%$613.58$591.41482,682 shs$21.52 billion08/12/2025$582.18$590.54+1.44%$592.22$580.41278,464 shs$20.74 billion08/11/2025$581.96$582.18+0.04%$582.43$571.12298,456 shs$20.45 billion Get the Latest News and Ratings for LII and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Lennox International and its competitors with MarketBeat's FREE daily newsletter. 08/08/2025$593.31$581.96-1.91%$597.31$581.38243,460 shs$20.44 billion08/07/2025$593.92$593.31-0.10%$604.00$591.45190,617 shs$20.84 billion08/06/2025$602.87$593.92-1.49%$604.04$592.00216,967 shs$20.86 billion08/05/2025$600.08$602.87+0.46%$608.80$596.40341,044 shs$21.17 billion08/04/2025$605.18$600.08-0.84%$613.86$597.72254,650 shs$21.07 billion08/01/2025$608.92$605.18-0.61%$609.07$598.27389,850 shs$21.25 billion07/31/2025$615.72$608.92-1.10%$621.90$607.00375,799 shs$21.39 billion07/30/2025$640.00$615.72-3.79%$634.02$607.26581,591 shs$21.62 billion07/29/2025$654.71$640.00-2.25%$656.37$633.34390,881 shs$22.48 billion07/28/2025$660.92$654.71-0.94%$663.90$648.05444,297 shs$23.00 billion07/25/2025$664.43$660.92-0.53%$668.28$652.20325,778 shs$23.45 billion07/24/2025$661.48$664.43+0.45%$674.40$659.82397,237 shs$23.58 billion07/23/2025$619.01$661.48+6.86%$689.44$657.891.17 million shs$23.48 billion07/22/2025$601.25$619.01+2.95%$620.05$598.25598,561 shs$21.97 billion Related Companies Allegion Stock Chart Carrier Global Stock Chart Fortune Brands Innovations Stock Chart Graco Stock Chart ITT Stock Chart Illinois Tool Works Stock Chart Masco Stock Chart Pentair Stock Chart Trane Technologies Stock Chart Watsco Stock Chart Receive LII Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Lennox International and its competitors with MarketBeat's FREE daily newsletter. 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