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Masimo (MASI) Stock Chart & Stock Price History

Masimo logo
$143.00 +1.77 (+1.25%)
Closing price 09/18/2025 04:00 PM Eastern
Extended Trading
$143.02 +0.03 (+0.02%)
As of 04:42 AM 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.
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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 27.99%, with a year-to-date return of -13.49%. In the past month, the stock has decreased 2.56%, reflecting recent market activity.

As of the latest close, Masimo traded at $143.00 with a market cap of $7.77 billion and volume of 566,785 shares. Five years ago, the stock traded at $223.29, representing a 35.96% decrease over that period. At the time, it had a market cap of $12.27 billion and a volume of 968,684 shares.

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5 Day
Performance
-3.01%
1 Month
Performance
-2.56%
3 Month
Performance
-12.15%
Year-To-Date
Performance
-13.49%
1 Year
Performance
+27.99%
5 Year
Performance
-35.96%

MASI Stock Chart for Friday, September, 19, 2025

MASI Chart by TradingView

Masimo Stock Price History

Export to Excel
DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
09/18/2025$141.23$143.00
+1.25%		$144.02$140.57566,785 shs$7.77 billion
09/17/2025$143.00$141.23
-1.24%		$144.59$140.11997,551 shs$7.67 billion
09/16/2025$145.72$143.00
-1.87%		$145.71$141.73770,677 shs$7.77 billion
09/15/2025$147.44$145.72
-1.17%		$148.95$145.15547,411 shs$7.92 billion
09/12/2025$146.21$147.44
+0.84%		$148.40$143.90699,217 shs$8.01 billion
09/11/2025$145.82$146.21
+0.27%		$149.35$144.85646,735 shs$7.94 billion
09/10/2025$148.12$145.82
-1.55%		$148.46$144.63360,599 shs$7.92 billion
09/09/2025$148.79$148.12
-0.45%		$149.46$147.17357,227 shs$8.05 billion
09/08/2025$147.19$148.79
+1.09%		$149.95$145.92740,286 shs$8.08 billion
09/05/2025$143.01$147.19
+2.92%		$148.08$142.07693,981 shs$8.00 billion
09/04/2025$136.77$143.01
+4.56%		$143.34$136.35709,748 shs$7.77 billion
09/03/2025$137.74$136.77
-0.70%		$138.50$135.73536,772 shs$7.43 billion
09/02/2025$139.71$137.74
-1.41%		$138.20$135.34681,882 shs$7.48 billion
09/01/2025$139.71$139.71$141.93$138.77459,927 shs$7.59 billion
08/29/2025$140.95$139.71
-0.88%		$141.93$138.77459,927 shs$7.59 billion
08/28/2025$142.49$140.95
-1.08%		$142.75$139.44668,122 shs$7.66 billion
08/27/2025$143.25$142.49
-0.53%		$144.08$141.17777,553 shs$7.74 billion
08/26/2025$145.15$143.25
-1.31%		$145.79$142.86575,690 shs$7.78 billion
08/25/2025$148.63$145.15
-2.34%		$147.67$144.66467,394 shs$7.89 billion
08/22/2025$144.24$148.63
+3.04%		$149.59$144.29429,976 shs$8.08 billion
08/21/2025$145.65$144.24
-0.97%		$146.16$143.11721,423 shs$7.84 billion
08/20/2025$146.76$145.65
-0.76%		$147.11$144.02667,784 shs$7.91 billion
08/19/2025$153.93$146.76
-4.66%		$154.70$146.491.02 million shs$7.97 billion
08/18/2025$153.87$153.93
+0.04%		$155.88$153.45528,907 shs$8.36 billion
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This page (NASDAQ:MASI) was last updated on 9/19/2025 by MarketBeat.com Staff
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