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$MASI:NASDAQ · MASIMO CORP

Conviction from: NASDAQ

Masimo — pulse-oximetry medical monitoring

Not currently held by tracked 13F filers — this page aggregates activist, insider, politician and research activity.

Beyond 13F — activists, insiders, politicians & research

Activist 13D filings daily digest →

FiledFormActivist% of classConviction
2026-02-17SCHEDULE 13D/AQuentin Koffey / Politan Capital6.2%Highfiling

Citrini Research coverage report library →

ReportDateStance
#91 — Market Memo: Seeing the Stag2025-04-03SHORT

from2028 — cross-site stock view. Rebuilt at publish time.