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MASI Insider Trading

Insider Ownership Percentage: 9.70%
Insider Buying (Last 12 Months): $452,975.00
Insider Selling (Last 12 Months): $0.00

Masimo Insider Trading History Chart

This chart shows the insider buying and selling history at Masimo by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Masimo Share Price & Price History

Current Price: $179.95
Price Change: +0.30 (1.20%)
As of 06/10/2026 12:00 AM ET

This chart shows the closing price history over time for MASI up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Masimo Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
8/12/2025Michelle BrennanChairmanBuy100$150.35$15,035.007,218View SEC Filing Icon  
8/11/2025William R JellisonDirectorBuy3,000$145.98$437,940.004,790View SEC Filing Icon  
5/12/2025Bilal MuhsinCOOSell10,000$163.28$1,632,800.0024,172View SEC Filing Icon  
3/14/2025Craig B. ReynoldsDirectorSell2,053$166.13$341,064.8916,581View SEC Filing Icon  
3/10/2025Bilal MuhsinCOOSell30,000$167.49$5,024,700.0024,172View SEC Filing Icon  
4/26/2024Craig B. ReynoldsDirectorSell40,000$136.17$5,446,800.007,406View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Masimo (NASDAQ:MASI)

85.96% of Masimo stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at MASI by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Masimo Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
6/18/2026Pacer Advisors Inc.7,618$1.36M0.0%+3.5%0.015%Search for SEC Filing on Google Icon
6/16/2026Empowered Funds LLC1,376$0.25M0.0%-14.2%0.003%Search for SEC Filing on Google Icon
6/15/2026Carmignac Gestion64,831$11.53M0.2%N/A0.124%Search for SEC Filing on Google Icon
6/3/2026NewEdge Advisors LLC1,827$0.33M0.0%+1,531.3%0.003%Search for SEC Filing on Google Icon
6/1/2026Caerus Investment Advisors LLC1,526$0.27M0.1%N/A0.003%Search for SEC Filing on Google Icon
6/1/2026Keel Point LLC1,228$0.22M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/21/2026Essential Partners LLC1,183$0.21M0.1%+33.4%0.002%Search for SEC Filing on Google Icon
5/21/2026Groupe la Francaise31,950$5.68M0.1%N/A0.061%Search for SEC Filing on Google Icon
5/20/2026Liontrust Investment Partners LLP20,138$3.58M0.1%-96.8%0.038%Search for SEC Filing on Google Icon
5/19/2026Western Wealth Management LLC250$44K0.0%N/A0.000%Search for SEC Filing on Google Icon
5/19/2026Bank of America Corp DE232,003$41.27M0.0%-18.5%0.443%Search for SEC Filing on Google Icon
5/19/2026Bull Harbor Capital LLC2,151$0.38M0.1%N/A0.004%Search for SEC Filing on Google Icon
5/19/2026South Dakota Investment Council17,568$3.13M0.1%-17.4%0.034%Search for SEC Filing on Google Icon
5/18/2026Amundi243,143$43.25M0.0%+454.4%0.464%Search for SEC Filing on Google Icon
5/18/2026EverSource Wealth Advisors LLC1,064$0.19M0.0%+9.0%0.002%Search for SEC Filing on Google Icon
5/18/2026California State Teachers Retirement System53,287$9.48M0.0%+21.6%0.102%Search for SEC Filing on Google Icon
5/18/2026Readystate Asset Management LP171,115$30.44M1.4%N/A0.327%Search for SEC Filing on Google Icon
5/18/2026Royal Bank of Canada2,748$0.49M0.0%-75.8%0.005%Search for SEC Filing on Google Icon
5/18/2026Empowered Funds LLC1,376$0.25M0.0%-14.2%0.003%Search for SEC Filing on Google Icon
5/16/2026The Manufacturers Life Insurance Company 23,637$4.20M0.0%-28.8%0.045%Search for SEC Filing on Google Icon
5/16/2026Quantinno Capital Management LP22,501$4M0.0%+69.8%0.043%Search for SEC Filing on Google Icon
5/16/2026Whitebox Advisors LLC270,001$48.03M0.6%N/A0.516%Search for SEC Filing on Google Icon
5/16/2026SummitTX Capital L.P.7,000$1.25M0.0%+336.7%0.013%Search for SEC Filing on Google Icon
5/15/2026Weiss Asset Management LP112,600$20.03M0.3%N/A0.215%Search for SEC Filing on Google Icon
5/15/2026Waverly Advisors LLC1,415$0.25M0.0%N/A0.003%Search for SEC Filing on Google Icon
5/15/2026Kryger Capital LLC100,589$17.89M1.3%N/A0.192%Search for SEC Filing on Google Icon
5/14/2026Healthcare of Ontario Pension Plan Trust Fund67,600$12.02M0.0%N/A0.129%Search for SEC Filing on Google Icon
5/14/2026Renaissance Technologies LLC239,500$42.60M0.1%+299.8%0.457%Search for SEC Filing on Google Icon
5/14/2026Gabelli Funds LLC126,082$22.43M0.2%+285.6%0.241%Search for SEC Filing on Google Icon
5/14/2026GABELLI & Co INVESTMENT ADVISERS INC.88,650$15.77M2.3%N/A0.169%Search for SEC Filing on Google Icon
5/14/2026Gamco Investors INC. ET AL92,000$16.36M0.2%+10.8%0.176%Search for SEC Filing on Google Icon
5/14/2026Public Employees Retirement System of Ohio13,446$2.39M0.0%-3.1%0.026%Search for SEC Filing on Google Icon
5/14/2026Arrowstreet Capital Limited Partnership172,588$30.70M0.0%N/A0.330%Search for SEC Filing on Google Icon
5/14/2026Caxton Associates LLP45,917$8.17M0.2%N/A0.088%Search for SEC Filing on Google Icon
5/14/2026Capula Management Ltd142,800$25.40M0.2%N/A0.273%Search for SEC Filing on Google Icon
5/14/2026Bank of Nova Scotia152,584$27.14M0.0%+2,808.0%0.291%Search for SEC Filing on Google Icon
5/14/2026Sei Investments Co.13,195$2.35M0.0%+71.0%0.025%Search for SEC Filing on Google Icon
5/8/2026PNC Financial Services Group Inc.5,107$0.91M0.0%-29.9%0.010%Search for SEC Filing on Google Icon
5/7/2026Dimensional Fund Advisors LP164,402$29.24M0.0%-5.5%0.315%Search for SEC Filing on Google Icon
5/7/2026Parallel Advisors LLC624$0.11M0.0%+119.7%0.001%Search for SEC Filing on Google Icon
5/7/2026Swiss National Bank90,300$16.06M0.0%-0.9%0.173%Search for SEC Filing on Google Icon
5/6/2026California Public Employees Retirement System77,397$13.77M0.0%+22.2%0.148%Search for SEC Filing on Google Icon
5/6/2026Assetmark Inc.2,068$0.37M0.0%+11.8%0.004%Search for SEC Filing on Google Icon
5/6/2026Bessemer Group Inc.1,857$0.33M0.0%+1,217.0%0.004%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp306,400$54.50M0.0%-0.7%0.570%Search for SEC Filing on Google Icon
5/5/2026Illinois Municipal Retirement Fund7,626$1.36M0.0%-32.9%0.014%Search for SEC Filing on Google Icon
5/4/2026ABC Arbitrage SA23,604$4.20M0.6%N/A0.044%Search for SEC Filing on Google Icon
5/4/2026Calamos Wealth Management LLC1,511$0.27M0.0%N/A0.003%Search for SEC Filing on Google Icon
5/4/2026Calamos Advisors LLC1,511$0.27M0.0%N/A0.003%Search for SEC Filing on Google Icon
5/4/2026State of Michigan Retirement System10,996$1.96M0.0%+1.9%0.020%Search for SEC Filing on Google Icon
5/4/2026Principal Financial Group Inc.102,718$18.27M0.0%+5.0%0.191%Search for SEC Filing on Google Icon
5/1/2026180 Wealth Advisors LLC2,728$0.49M0.1%+2.5%0.005%Search for SEC Filing on Google Icon
5/1/2026Commonwealth of Pennsylvania Public School Empls Retrmt SYS18,940$3.37M0.0%+65.8%0.035%Search for SEC Filing on Google Icon
5/1/2026Fifth Third Bancorp11,736$2.09M0.0%+1,934.0%0.022%Search for SEC Filing on Google Icon
4/30/2026Hsbc Holdings PLC473,434$84.27M0.0%N/A0.881%Search for SEC Filing on Google Icon
4/30/2026Oregon Public Employees Retirement Fund9,374$1.67M0.0%+3.3%0.017%Search for SEC Filing on Google Icon
4/29/2026R Squared Ltd1,289$0.23M0.1%N/A0.002%Search for SEC Filing on Google Icon
4/29/2026Credit Industriel ET Commercial23,050$4.10M0.3%N/A0.043%Search for SEC Filing on Google Icon
4/29/2026Canvas Wealth Advisors LLC3,191$0.57M0.1%N/A0.006%Search for SEC Filing on Google Icon
4/28/2026Hardy Reed LLC2,381$0.42M0.0%+9.6%0.004%Search for SEC Filing on Google Icon
4/28/2026Praxis Investment Management Inc.1,773$0.32M0.0%N/A0.003%Search for SEC Filing on Google Icon
4/27/2026HB Wealth Management LLC2,704$0.48M0.0%+15.7%0.005%Search for SEC Filing on Google Icon
4/27/2026New York State Teachers Retirement System38,569$6.86M0.0%-3.7%0.072%Search for SEC Filing on Google Icon
4/25/2026Strs Ohio37,213$6.62M0.0%+0.8%0.069%Search for SEC Filing on Google Icon
4/24/2026Root Financial Partners LLC457$81K0.0%+7,516.7%0.001%Search for SEC Filing on Google Icon
4/24/2026Capricorn Fund Managers Ltd22,811$4.06M0.6%N/A0.042%Search for SEC Filing on Google Icon
4/22/2026Pictet Asset Management Holding SA7,020$1.25M0.0%+7.3%0.013%Search for SEC Filing on Google Icon
4/22/2026Sterling Capital Management LLC322$57K0.0%-97.0%0.001%Search for SEC Filing on Google Icon
4/22/2026Ground Swell Capital LLC1,319$0.24M0.5%N/A0.002%Search for SEC Filing on Google Icon
4/21/2026Pinnacle Wealth Management Advisory Group LLC1,324$0.24M0.0%N/A0.002%Search for SEC Filing on Google Icon
4/21/2026Louisiana State Employees Retirement System13,200$2.35M0.0%N/A0.025%Search for SEC Filing on Google Icon
4/21/2026Silver Oak Securities Incorporated1,755$0.31M0.0%-10.2%0.003%Search for SEC Filing on Google Icon
4/20/2026Blue Trust Inc.232$41K0.0%-24.2%0.000%Search for SEC Filing on Google Icon
4/20/2026Fifth Third Wealth Advisors LLC1,528$0.27M0.0%N/A0.003%Search for SEC Filing on Google Icon
4/17/2026Krilogy Financial LLC1,879$0.34M0.0%-44.1%0.003%Search for SEC Filing on Google Icon
4/17/2026Andina Capital Management LLC1,420$0.25M0.2%N/A0.003%Search for SEC Filing on Google Icon
4/16/2026SG Americas Securities LLC522,824$93M0.1%+3,082.3%0.973%Search for SEC Filing on Google Icon
4/16/2026Evolve Private Wealth LLC1,713$0.31M0.0%N/A0.003%Search for SEC Filing on Google Icon
4/16/2026Diversified Trust Co4,685$0.83M0.0%N/A0.009%Search for SEC Filing on Google Icon
3/17/2026Rockefeller Capital Management L.P.86,411$11.24M0.0%-41.4%0.161%Search for SEC Filing on Google Icon
3/9/2026Corient Private Wealth LLC340,230$44.25M0.1%+1.2%0.633%Search for SEC Filing on Google Icon
3/3/2026Caitong International Asset Management Co. Ltd890$0.12M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/24/2026Pacer Advisors Inc.7,360$0.96M0.0%+21.1%0.014%Search for SEC Filing on Google Icon
2/23/2026Virtu Financial LLC1,985$0.26M0.0%N/A0.004%Search for SEC Filing on Google Icon
2/19/2026T. Rowe Price Investment Management Inc.2,330,158$303.06M0.2%+9.6%4.338%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.319,308$41.53M0.0%-0.6%0.595%Search for SEC Filing on Google Icon
2/19/2026Corient Private Wealth LLC341,730$44.45M0.0%+1.6%0.636%Search for SEC Filing on Google Icon
2/18/2026Mercer Global Advisors Inc. ADV10,862$1.41M0.0%N/A0.020%Search for SEC Filing on Google Icon
2/18/2026Naya Capital Management UK Ltd.1,560,697$202.98M15.3%N/A2.906%Search for SEC Filing on Google Icon
2/18/2026State of Tennessee Department of Treasury13,918$1.91M0.0%-4.1%0.026%Search for SEC Filing on Google Icon
2/18/2026Empowered Funds LLC1,603$0.21M0.0%-34.9%0.003%Search for SEC Filing on Google Icon
2/18/2026XTX Topco Ltd12,746$1.66M0.0%N/A0.024%Search for SEC Filing on Google Icon
2/18/2026nVerses Capital LLC2,067$0.27M0.6%N/A0.004%Search for SEC Filing on Google Icon
2/18/2026Voloridge Investment Management LLC39,557$5.15M0.0%+1,281.7%0.074%Search for SEC Filing on Google Icon
2/18/2026Wellington Management Group LLP7,832$1.02M0.0%+257.0%0.015%Search for SEC Filing on Google Icon
2/18/2026SummitTX Capital L.P.1,603$0.21M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/18/2026Tudor Investment Corp ET AL16,242$2.11M0.0%-48.7%0.030%Search for SEC Filing on Google Icon
2/18/2026Polymer Capital Management US LLC9,523$1.24M0.1%+62.1%0.018%Search for SEC Filing on Google Icon
2/18/2026Occudo Quantitative Strategies LP9,663$1.26M0.1%+87.7%0.018%Search for SEC Filing on Google Icon
2/18/2026Millennium Management LLC187,965$24.45M0.0%+1,065.2%0.350%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Masimo logo
Masimo Corporation develops, manufactures, and markets various patient monitoring technologies, and automation and connectivity solutions worldwide. The company offers masimo signal extraction technology (SET) pulse oximetry with measure-through motion and low perfusion pulse oximetry monitoring to address the primary limitations of conventional pulse oximetry; Masimo rainbow SET platform, including rainbow SET Pulse CO-Oximetry products that allows noninvasive monitoring of carboxyhemoglobin, methemoglobin, hemoglobin concentration, fractional arterial oxygen saturation, oxygen content, pleth variability index, rainbow pleth variability index, respiration rate from the pleth, and oxygen reserve index, as well as acoustic respiration monitoring, SedLine brain function monitoring, NomoLine capnography and gas monitoring, and regional oximetry. It also provides brain function and hemodynamic monitoring solutions; patient position and activity tracking, and neuromodulation technology solutions; and Masimo Hospital Automation platform, including hospital automation solutions, including Patient SafetyNet, Patient SafetyNet Surveillance, SafetyNet, Replica, Iris, MyView, UniView, Uniview: 60, Masimo Sleep, Centroid, and Bridg; and nasal high-flow ventilation, neuromodulation therapeutics, and telehealth solutions. In addition, the company provides its products through direct sales force, distributors, and original equipment manufacturers partners to hospitals, emergency medical service and home care providers, long-term care facilities, physician offices, veterinarians, and consumers; and home wellness products through e-commerce internet sites, such as masimopersonalhealth.com, amazon.com, and shopify.com. Masimo Corporation was incorporated in 1989 and is headquartered in Irvine, California.
Read More on Masimo

Today's Range

Now: $179.95
Low: $179.95
High: $179.95

50 Day Range

MA: $178.80
Low: $178.29
High: $179.97

52 Week Range

Now: $179.95
Low: $125.94
High: $179.99

Volume

N/A

Average Volume

964,099 shs

Market Capitalization

$9.42 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.11

Who are the company insiders with the largest holdings of Masimo?

Masimo's top insider shareholders include:
  1. Joe E Kiani (CEO)
  2. Yongsam Lee (EVP)
  3. Sanford Fitch (Director)
  4. Steven Barker (Director)
  5. Rick Fishel (Insider)
  6. Raad Mark De (CFO)
  7. Anand Sampath (COO)
  8. Jon Coleman (Insider)
  9. Anand Sampath (EVP)
  10. Bilal Muhsin (COO)
Learn More about top insider investors at Masimo.

Who are the major institutional investors of Masimo?

Masimo's top institutional investors include:
  1. SG Americas Securities LLC — 0.97%
  2. Hsbc Holdings PLC — 0.88%
  3. Bank of New York Mellon Corp — 0.57%
  4. Whitebox Advisors LLC — 0.52%
  5. Amundi — 0.46%
  6. Renaissance Technologies LLC — 0.46%
Learn More about top institutional investors of Masimo stock.

Which major investors are selling Masimo stock?

During the last quarter, MASI stock was sold by these institutional investors:
  1. Liontrust Investment Partners LLP
  2. Bank of America Corp DE
  3. Sterling Capital Management LLC
  4. Dimensional Fund Advisors LP
  5. The Manufacturers Life Insurance Company
  6. Royal Bank of Canada
  7. Illinois Municipal Retirement Fund
  8. South Dakota Investment Council

Which major investors are buying Masimo stock?

During the previous quarter, MASI stock was bought by institutional investors including:
  1. SG Americas Securities LLC
  2. Hsbc Holdings PLC
  3. Whitebox Advisors LLC
  4. Amundi
  5. Renaissance Technologies LLC
  6. Arrowstreet Capital Limited Partnership
  7. Readystate Asset Management LP
  8. Bank of Nova Scotia
In the previous year, these company insiders have bought Masimo stock:
  1. Michelle Brennan (Chairman)
  2. William R Jellison (Director)
Learn More investors buying Masimo stock.

Masimo Active Insiders

Joe E Kiani
Joe E Kiani (Age 61)
Founder, CEO & Chairman
Bilal Muhsin
Bilal Muhsin (Age 44)
COO
Micah W Young
Micah W Young (Age 47)
CFO
Michelle Brennan
Michelle Brennan
Chairman
Adam Mikkelson
Adam Mikkelson
Director
H Michael Cohen
H Michael Cohen
Director
Craig B Reynolds
Craig B Reynolds
Director
Tao Levy
Tao Levy (Age 51)
EVP
Thomas Samuel Mcclenahan
EVP
Anand Sampath
Anand Sampath (Age 60)
EVP
Jon Coleman
Jon Coleman (Age 62)
Insider