Masimo - 18 Year Stock Price History | MASI

The latest closing stock price for Masimo as of May 12, 2025 is 163.56.

  • An investor who bought $1,000 worth of Masimo stock at the IPO in 2007 would have $8,027 today, roughly 8 times their original investment - a 13.00% compound annual growth rate over 18 years.
  • The all-time high Masimo stock closing price was 303.29 on November 19, 2021.
  • The Masimo 52-week high stock price is 194.88, which is 19.1% above the current share price.
  • The Masimo 52-week low stock price is 101.61, which is 37.9% below the current share price.
  • The average Masimo stock price for the last 52 weeks is 147.06.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.

Masimo - 18 Year Stock Price History | MASI

  • An investor who bought $1,000 worth of Masimo stock at the IPO in 2007 would have $8,027 today, roughly 8 times their original investment - a 13.00% compound annual growth rate over 18 years.
  • The all-time high Masimo stock closing price was 303.29 on November 19, 2021.
  • The Masimo 52-week high stock price is 194.88, which is 19.1% above the current share price.
  • The Masimo 52-week low stock price is 101.61, which is 37.9% below the current share price.
  • The average Masimo stock price for the last 52 weeks is 147.06.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.