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Symbol
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MASI on Nasdaq
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Investment type
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Equity / COMMON STOCK
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Latest Disclosed Shares Owned
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4,386,302 shares
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Security Ownership %
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8.2%
BlackRock Portfolio Management LLC ownership in MASIMO CORP COMMON STOCK (MASI)
21 Jan 2026 - BlackRock Portfolio Management LLC has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 4,386,302 shares of MASIMO CORP COMMON STOCK (MASI).
This represents 8.2% ownership of the company.
In their previous filing dated 04 Mar 2025, BlackRock Portfolio Management LLC had reported owning 5,536,774 shares, indicating a decrease of +21%.
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