Pentwater Capital Management 13F: New $572M Stake in MASI
Pentwater Capital Management bought a large new stake in Masimo Corporation during the first quarter.
Reviewed by automated data checks against the source filing. How we make and check alerts
Pentwater Capital Management opened a new position of 3,176,000 shares in Masimo Corporation ($MASI), according to a 13F filing with the SEC dated May 15, 2026. It reported 3,176,000 shares worth $571.52 million at the end of the quarter.
Find the original: Pentwater Capital Management 13F filings on SEC EDGAR
Key Points
- Pentwater Capital Management opened a brand new position in Masimo Corporation by acquiring 3,176,000 shares.
- The newly initiated stake was valued at approximately $571.5 million based on disclosures in a recent SEC filing.
- Masimo Corporation shares trade near $179.95, hovering close to their 52-week high of $179.99.
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Pentwater Capital Opens Fresh Stake in Masimo Corporation
Pentwater Capital Management took a large new position in Masimo Corporation (NGM: MASI) during the period ended March 31, 2026, according to a Form 13F filed with the U.S. Securities and Exchange Commission. Because the filing looks backward, these figures reflect portfolio choices made by the end of the first quarter and might not match the firm's current holdings today.
Position Details and Share Count
During the quarter, the fund bought 3,176,000 shares of the medical device maker. The investment carried an estimated total value of $571.5 million based on an average cost basis of $167.38 per share. This new buy immediately establishes Masimo as a notable holding for the fund.
Masimo Stock Price and Valuation
Masimo shares changed hands at $179.95 on Sunday. The stock trades near the top of its 52-week range, which runs from a low of $125.94 to a high of $179.99. The company carries a trailing price-to-earnings ratio of 44.43 alongside a forward P/E ratio of 26.87. Its 50-day moving average sits at $178.69, while its 200-day moving average rests lower at $156.66.
Business Background for Masimo
Based in Irvine, California, Masimo builds patient monitoring tools, pulse oximetry equipment, and hospital automation systems. Its technology helps medical providers track oxygen levels, brain function, and other vital signs across emergency rooms, hospitals, and home care settings.
What to Watch Next for Masimo
Market participants will watch for the company's next financial results and earnings release, which is scheduled for August 4, 2026. Institutional investors also track subsequent SEC filings to see how major funds adjust their positions over time.
Related Filing Alerts
Source: Pentwater Capital Management's 13F filing on $MASI (May 15, 2026). 13F filings show holdings as of the end of the reporting quarter and may not reflect the fund's current position. Find the original filing: Pentwater Capital Management 13F filings on SEC EDGAR. Written by software, not financial advice. How we make alerts