George Soros's MASI Position Overview
George Soros (via Soros Fund Management LLC) currently holds 100,838 shares of Masimo Corporation (MASI) worth $17.94 M, representing 0.20% of the portfolio. First purchased in 2017-Q3, this short-term holding has been held for 3 quarters.
Based on 13F filings, George Soros has maintained this position in MASI for several quarters, showing initial confidence in the investment. Largest addition occurred in Q1 2026, adding 100,838 shares. Largest reduction occurred in Q4 2017, reducing 2,700 shares.
Analysis based on 13F filings available since 2013 Q2
George Soros's Masimo Corporation (MASI) Holding Value Over Time
Track share changes against reported price movement
Quarterly Masimo Corporation (MASI) Trades by George Soros
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +100,838 | New Buy | 100,838 | $177.87 |
| Q4 2017 | -2,700 | Sold Out | 0 | $0.00 |
| Q3 2017 | +2,700 | New Buy | 2,700 | $86.67 |
George Soros's Masimo Corporation Investment FAQs
George Soros first purchased Masimo Corporation (MASI) in Q3 2017, acquiring 2,700 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
George Soros has held Masimo Corporation (MASI) for 3 quarters since Q3 2017.
George Soros's largest addition to Masimo Corporation (MASI) was in Q1 2026, adding 100,838 shares worth $17.94 M.
According to the latest 13F filing for Q1 2026, George Soros's firm, Soros Fund Management LLC, owns 100,838 shares of Masimo Corporation (MASI), valued at approximately $17.94 M.
As of the Q1 2026 filing, Masimo Corporation (MASI) represents approximately 0.20% of George Soros's publicly disclosed stock portfolio, making it one of their key holdings.
George Soros's peak holding in Masimo Corporation (MASI) was 100,838 shares, as reported at the end of Q1 2026.