MASI — MASIMO CORP

Ownership history in Entropy Technologies, LP  ·  4 quarters on record

This page tracks every 13F SEC filing in which Entropy Technologies, LP reported a position in MASIMO CORP (MASI). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
0.19% (2025 Q3)
Avg. % of fund
0.11%
First filed
2023 Q4
Last filed
2025 Q3
Quarters held
4
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 ADDED 16,809 +8,809 +110.1% 0.19% $2.5M $147.55
2025 Q2 ADDED 8,000 +6,197 +343.7% 0.11% $1.3M $168.22
2025 Q1 REDUCED 1,803 -4,446 -71.1% 0.03% $300K $166.60
2023 Q4 INITIATED 6,249 — — 0.14% $732K —
% of Fund (quarterly)    MASI price (monthly, adj. close)

Other funds also holding MASI

As of 2025 Q4 — sorted by position size

Politan Capital Management LP 3Y 71.01% NAYA CAPITAL MANAGEMENT UK LTD 3Y 7Y 15.28% LOCKERMAN FINANCIAL GROUP, INC. 3Y 2.94% Parkman Healthcare Partners LLC 3Y 2.48% WILSON ASSET MANAGEMENT (INTERNATIONAL) PTY LTD 3Y 1.32% Alpha Wave Global, LP 3Y 7Y 1.2% RTW INVESTMENTS, LP 3Y 7Y 0.89% WESTFIELD CAPITAL MANAGEMENT CO LP 3Y 7Y 0.82% LECAP ASSET MANAGEMENT LTD 0.68% Birchview Capital, LP 3Y 7Y 0.63%
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