MASIMO CORP (MASI) Institutional Ownership and Insiders Activity

MASIMO CORP (MASI) is widely held by institutional investors, with 13 firms reporting positions valued at approximately $135.13M based on SEC Form 13F filings for the quarter ended March 31, 2026.

O'Connor Alternative Investments Llc is the largest disclosed holder, reporting approximately $73.44M in MASI holdings in its latest filing.

Institutional ownership remains highly concentrated, with O'Connor Alternative Investments Llc representing the majority of disclosed value.