Masimo (MASI) Stock Chart & Stock Price History $168.47 +2.05 (+1.23%) Closing price 04:00 PM EasternExtended Trading$158.72 -9.76 (-5.79%) As of 07:55 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 InterestSustainabilityTrendsBuy This Stock Masimo Stock Price Performance 5 Day Performance+1.60%1 Month Performance-9.52%3 Month Performance-1.46%6 Month Performance+26.48%Year-To-Date Performance+1.92%1 Year Performance+16.60% Receive MASI Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Masimo and its competitors with MarketBeat's FREE daily newsletter. Email Address MASI Stock Chart for Thursday, March, 27, 2025 MASI Chart by TradingViewRemove Ads Masimo 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 Capitalization03/27/2025$166.42$168.47+1.23%$169.82$165.04412,699 shs$9.09 billion03/26/2025$169.70$166.42-1.93%$169.78$166.04304,202 shs$8.98 billion03/25/2025$167.61$169.70+1.25%$170.80$167.76476,981 shs$9.16 billion03/24/2025$165.82$167.61+1.08%$170.67$166.21520,030 shs$9.04 billion03/21/2025$169.50$165.82-2.17%$168.65$164.41701,632 shs$8.95 billion03/20/2025$172.74$169.50-1.88%$175.40$168.57535,706 shs$9.14 billion03/19/2025$168.16$172.74+2.72%$175.36$166.50850,286 shs$9.32 billion03/18/2025$172.78$168.16-2.67%$173.49$166.82370,453 shs$9.07 billion03/17/2025$168.21$172.78+2.72%$173.12$167.66462,484 shs$9.32 billion03/14/2025$165.69$168.21+1.52%$171.33$165.96472,958 shs$9.07 billion Get the Latest News and Ratings for MASI and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Masimo and its competitors with MarketBeat's FREE daily newsletter. 03/13/2025$167.67$165.69-1.18%$167.68$161.03450,744 shs$8.94 billion03/12/2025$166.52$167.67+0.69%$171.81$164.47943,106 shs$9.05 billion03/11/2025$165.45$166.52+0.65%$171.39$163.38700,207 shs$8.98 billion03/10/2025$174.52$165.45-5.20%$172.83$162.71820,560 shs$8.93 billion03/07/2025$175.61$174.52-0.62%$176.81$170.50630,748 shs$9.42 billion03/06/2025$186.19$175.61-5.68%$183.50$174.61498,154 shs$9.47 billion03/05/2025$183.46$186.19+1.49%$186.27$181.61378,659 shs$10.04 billion03/04/2025$190.63$183.46-3.76%$187.25$175.51619,819 shs$9.90 billion03/03/2025$188.77$190.63+0.99%$194.88$186.49896,907 shs$10.28 billion02/28/2025$186.20$188.77+1.38%$189.00$183.35698,035 shs$10.11 billion02/27/2025$190.34$186.20-2.17%$192.62$183.55912,249 shs$9.97 billion02/26/2025$169.54$190.34+12.27%$191.10$175.991.51 million shs$10.19 billion Related Companies IDEXX Laboratories Stock Price Chart ResMed Stock Price Chart DexCom Stock Price Chart STERIS Stock Price Chart Insulet Stock Price Chart Baxter International Stock Price Chart Hologic Stock Price Chart Globus Medical Stock Price Chart Teleflex Stock Price Chart Integer Stock Price Chart Receive MASI Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Masimo and its competitors with MarketBeat's FREE daily newsletter. 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