Whitebox Advisors’s Masimo MASI Stock Holding History

Whitebox Advisors’s Portfolio MASI Stock Details MASI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-270,001	Closed	-$48M	–	684
2026 Q1	$48M	Buy	+270,001	New	+$42.4M	0.58%	36

Other funds holding MASI

IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

HNB

Huntington National Bank Columbus, Ohio $20.6B AUM 34.61% 1-Year Est. Return

Whitebox Advisors's MASI Position: Q2 2026 in Review

Whitebox Advisors sold out of Masimo (MASI) in Q2 2026, closing a stake of 270,001 shares — an estimated $48M sold.

Whitebox Advisors first reported a position in MASI in Q1 2026 and held it in 1 quarter. The position peaked at $48M in Q1 2026. 2 funds tracked by Wall St. Rank hold MASI as of Q2 2026.

Whitebox Advisors reported no remaining Masimo position as of Q2 2026 after selling out during the quarter.
Whitebox Advisors sold 270,001 Masimo shares in Q2 2026, an estimated $48M.
Whitebox Advisors first reported a position in Masimo in Q1 2026 and held it in 1 quarter.
Whitebox Advisors's Masimo position peaked at $48M in Q1 2026.
2 funds tracked by Wall St. Rank held Masimo as of Q2 2026.

Based on Whitebox Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.