Position in MASI
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$48,025,077
New position
Shares Held
270,001
first reported quarter
Ownership
0.516%
of shares outstanding
% of Portfolio
3.26%
of 13F equity value
Holder Rank
#42
of 445 holders
Holding Since
Mar 2026
1 quarter on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Position in Medical Devices
Healthcare · as of Mar 31, 2026WHITEBOX ADVISORS LLC holds $194,150,055 across 2 Medical Devices names. MASI ranks #2 (24.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PEN |
Penumbra Inc
|
445,001 | $146,124,978 | |
| 2 | MASI |
Masimo Corp
This page
|
270,001 | $48,025,077 |
All Filings in MASI
Export CSV
1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $48,025,077 | 270,001 | Shares | Sole | 2026-05-15 | |
| No filing history on record for this holder in this stock. | ||||||