Weiss Asset Management LP

Position in MASI — Masimo Corp

CIK 1357550 BOSTON, MA

Position in MASI

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$20,028,162

New position

Shares Held

112,600

first reported quarter

Ownership

0.215%

of shares outstanding

% of Portfolio

0.52%

of 13F equity value

Holder Rank

#78

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")%

Healthcare · as of Mar 31, 2026

Weiss Asset Management LP holds $34,773,539 across 4 Medical Devices names. MASI ranks #1 (57.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MASI	Masimo Corp This page	112,600	$20,028,162
2	DXCM	Dexcom Inc	120,760	$7,583,728
3	NNOX	Nano-X Imaging Ltd.	2,793,339	$6,340,879
4	BSX	Boston Scientific Corp	13,080	$820,770

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$20,028,162	112,600	—	Shares	Defined	2026-05-15
No filing history on record for this holder in this stock.