Altair Engineering (ALTR) Stock Chart & Stock Price History $111.78 0.00 (0.00%) Closing price 02/21/2025 04:00 PM EasternExtended Trading$111.80 +0.02 (+0.02%) As of 02/21/2025 07:04 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrends Altair Engineering Stock Price Performance 5 Day Performance+0.84%1 Month Performance+1.25%3 Month Performance+6.25%6 Month Performance+25.89%Year-To-Date Performance+2.45%1 Year Performance+24.39% Receive ALTR Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Altair Engineering and its competitors with MarketBeat's FREE daily newsletter. Email Address ALTR Stock Chart for Saturday, February, 22, 2025 ALTR Chart by TradingView Altair Engineering Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization02/21/2025$111.78$111.78$112.20$111.47844,441 shs$9.51 billion02/20/2025$111.25$111.78+0.48%$111.78$110.95886,505 shs$9.51 billion02/19/2025$111.13$111.25+0.11%$111.50$110.81786,839 shs$9.47 billion02/18/2025$110.85$111.13+0.25%$111.27$110.65721,638 shs$9.45 billion02/17/2025$110.85$110.85$110.90$110.60595,219 shs$9.43 billion02/14/2025$110.70$110.85+0.14%$110.90$110.60595,219 shs$9.43 billion02/13/2025$110.39$110.70+0.28%$110.75$110.44998,052 shs$9.42 billion02/12/2025$110.37$110.39+0.02%$110.54$110.19537,695 shs$9.39 billion02/11/2025$110.41$110.37-0.04%$110.53$110.30481,282 shs$9.39 billion02/10/2025$110.47$110.41-0.05%$110.62$110.36497,446 shs$9.39 billion Get the Latest News and Ratings for ALTR and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Altair Engineering and its competitors with MarketBeat's FREE daily newsletter. 02/07/2025$110.46$110.47+0.01%$110.64$110.40509,333 shs$9.40 billion02/06/2025$110.50$110.46-0.04%$110.63$110.41856,224 shs$9.40 billion02/05/2025$110.45$110.50+0.05%$110.54$110.38636,888 shs$9.40 billion02/04/2025$110.20$110.45+0.23%$110.50$110.26653,911 shs$9.40 billion02/03/2025$110.35$110.20-0.14%$110.48$110.111.17 million shs$9.38 billion01/31/2025$110.51$110.35-0.14%$110.65$110.32807,410 shs$9.39 billion01/30/2025$110.52$110.51-0.01%$110.73$110.26449,949 shs$9.40 billion01/29/2025$110.32$110.52+0.18%$110.65$110.22561,297 shs$9.40 billion01/28/2025$110.28$110.32+0.04%$110.76$110.15539,482 shs$9.39 billion01/27/2025$110.38$110.28-0.09%$110.43$109.94717,776 shs$9.38 billion01/24/2025$110.47$110.38-0.08%$110.60$110.29779,773 shs$9.39 billion01/23/2025$110.40$110.47+0.06%$110.57$110.27992,173 shs$9.40 billion01/22/2025$110.62$110.40-0.20%$110.93$110.39801,658 shs$9.39 billion01/21/2025$110.41$110.62+0.19%$110.94$110.462.17 million shs$9.41 billion Related Companies MPWR Stock Chart MCHP Stock Chart FSLR Stock Chart SWKS Stock Chart MTSI Stock Chart LSCC Stock Chart RMBS Stock Chart CRUS Stock Chart SLAB Stock Chart POWI Stock Chart Receive ALTR Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Altair Engineering and its competitors with MarketBeat's FREE daily newsletter. 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