MASI

Masimo Corp

Latest period2026 - Q1Total superinvestors450

Top 10 Superinvestors by Shares Owned

This chart shows the top 10 superinvestors based on the number of shares they owned in 2025-Q4 and 2026-Q1. According to the most recent SEC 13F filing, 450 superinvestors own shares of Masimo Corp (MASI), although recent data may remain incomplete due to pending filings.

Quarter-over-Quarter Change (%)

This chart highlights the quarter-over-quarter change (%) in the number of superinvestors holding Masimo Corp (MASI), the total shares they held, and the total reported dollar value. It gives a clear view of whether there is ongoing momentum. The dotted lines at the top and bottom adjust longer bars to keep smaller data points visible for better comparison.

Superinvestors' Activity (%) Over the Last 4 Quarters

This chart shows superinvestors' activity with Masimo Corp (MASI) over the last four quarters, highlighting the percentage of investors who added, increased, decreased, held, or exited their positions, revealing shifts in sentiment over time.

Superinvestors' Past Actions

This chart displays superinvestors' past actions with Masimo Corp (MASI) over the last 10 years (40 quarters), helping to visualize the collective momentum and investment trends over time.

Superinvestors ownership

SuperinvestorPortfolio %Reported Value
Spencer Fleming@Blackrock, Inc.
Recent Activity
Decreased -47.55%
0.02%
$826.131M
4.645M shares@ 177.88 avg price
Quentin Koffey@Politan Capital Management Lp
Recent Activity
82.89%
$816.361M
4.59M shares@ 177.88 avg price
Joyce Kalleekal@Pentwater Capital Management Lp
Recent Activity
New Position
2.93%
$564.915M
3.176M shares@ 177.87 avg price
Suejean Mott@Barclays Plc
Recent Activity
Increased 4601.99%
0.12%
$488.073M
2.744M shares@ 177.87 avg price
Roya Doud@Hbk Investments L P
Recent Activity
New Position
4.65%
$458.213M
2.576M shares@ 177.88 avg price
Deepu Pylee@Massachusetts Financial Services Co Ma
Recent Activity
Decreased -12.05%
0.15%
$416.693M
2.343M shares@ 177.87 avg price
Christine M. Buchanan@Vanguard Capital Management Llc
Recent Activity
New Position
0.01%
$364.642M
2.05M shares@ 177.87 avg price
Christine M. Buchanan@Vanguard Portfolio Management Llc
Recent Activity
New Position
0.02%
$356.96M
2.007M shares@ 177.87 avg price
Stephanie J. Brown@Fmr Llc
Recent Activity
Decreased -81.55%
0.02%
$258.058M
1.451M shares@ 177.88 avg price
ELIZABETH SCHAEFER@State Street Corp
Recent Activity
Increased 1.6%
0.01%
$255.728M
1.438M shares@ 177.88 avg price

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