George Soros’s Masimo MASI Stock Holding History

George Soros’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	-100,838	Closed	-$17.9M	–	309
2026 Q1	$17.9M	Buy	+100,838	New	+$15.8M	0.2%	113
2017 Q4	–	Sell	-2,700	Closed	-$234K	–	244
2017 Q3	$234K	Buy	+2,700	New	+$239K	0.01%	213

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

George Soros's MASI Position: Q2 2026 in Review

George Soros sold out of Masimo (MASI) in Q2 2026, closing a stake of 100,838 shares — an estimated $17.9M sold.

George Soros first reported a position in MASI in Q3 2017 and held it in 2 quarters. The position peaked at $17.9M in Q1 2026. 2 funds tracked by Wall St. Rank hold MASI as of Q2 2026.

George Soros reported no remaining Masimo position as of Q2 2026 after selling out during the quarter.
George Soros sold 100,838 Masimo shares in Q2 2026, an estimated $17.9M.
George Soros first reported a position in Masimo in Q3 2017 and held it in 2 quarters.
George Soros's Masimo position peaked at $17.9M in Q1 2026.
2 funds tracked by Wall St. Rank held Masimo as of Q2 2026.

Based on Soros Fund Management's 13F filing for Q2 2026, filed 14 Aug 2026.