Masimo (MASI) Stock Chart & Stock Price History $156.17 +1.04 (+0.67%) As of 04:00 PM Eastern Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Masimo Stock Price Performance The Masimo (MASI) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 23.31%, with a year-to-date return of -5.52%. In the past month, the stock has increased 2.64%, reflecting recent market activity. As of the latest close, Masimo traded at $155.13 with a market cap of $8.41 billion and volume of 447,229 shares. Five years ago, the stock traded at $246.02, representing a 36.52% decrease over that period. At the time, it had a market cap of $13.31 billion and a volume of 502,900 shares. 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Email Address 5 Day Performance+1.15%1 Month Performance+2.64%3 Month Performance-11.87%Year-To-Date Performance-5.52%1 Year Performance+23.31%5 Year Performance-36.52% MASI Stock Chart for Tuesday, May, 20, 2025 MASI Chart by TradingView Masimo 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 Capitalization05/19/2025$155.62$155.13-0.31%$155.20$152.84447,229 shs$8.41 billion05/16/2025$154.39$155.62+0.80%$156.14$152.97537,620 shs$8.44 billion05/15/2025$153.15$154.39+0.81%$155.17$151.39745,264 shs$8.37 billion05/14/2025$161.56$153.15-5.21%$161.33$151.131.05 million shs$8.30 billion05/13/2025$163.56$161.56-1.22%$165.27$161.37536,884 shs$8.76 billion05/12/2025$157.18$163.56+4.06%$165.28$161.72614,506 shs$8.87 billion05/09/2025$153.77$157.18+2.22%$159.18$154.461.59 million shs$8.49 billion05/08/2025$150.11$153.77+2.44%$158.78$152.01905,901 shs$8.31 billion05/07/2025$161.47$150.11-7.04%$154.00$142.801.80 million shs$8.11 billion05/06/2025$162.86$161.47-0.85%$163.39$159.41902,363 shs$8.73 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. 05/05/2025$166.42$162.86-2.14%$164.07$160.01529,146 shs$8.80 billion05/02/2025$163.65$166.42+1.69%$168.62$164.82511,618 shs$8.99 billion05/01/2025$160.96$163.65+1.67%$165.83$160.71385,576 shs$8.84 billion04/30/2025$163.14$160.96-1.34%$162.94$158.36347,440 shs$8.70 billion04/29/2025$164.04$163.14-0.55%$165.40$161.75343,536 shs$8.82 billion04/28/2025$163.74$164.04+0.18%$165.10$160.70352,186 shs$8.86 billion04/25/2025$162.63$163.74+0.68%$163.89$161.48324,452 shs$8.85 billion04/24/2025$157.93$162.63+2.98%$163.95$158.42670,480 shs$8.79 billion04/23/2025$152.07$157.93+3.85%$165.73$153.87474,474 shs$8.53 billion04/22/2025$149.24$152.07+1.90%$153.50$149.80471,148 shs$8.22 billion04/21/2025$152.15$149.24-1.91%$151.36$146.11355,815 shs$8.06 billion Related Companies 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 Alphatec Stock Price Chart AtriCure Stock Price Chart Integra LifeSciences 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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