GW&K Investment Management’s Masimo MASI Stock Holding History

GW&K Investment Management’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	-122,781	Closed	-$21.8M	–	1105
2026 Q1	$21.8M	Buy	122,781 +3,419	+3%	+$537K	0.19%	186
2025 Q4	$15.5M	Sell	119,362 -4,685	-4%	-$671K	0.13%	229
2025 Q3	$18.3M	Buy	124,047 +123,912	+91,787%	+$18.8M	0.16%	208
2025 Q2	$23K	Hold	135	–	–	﹤0.01%	684
2025 Q1	$22K	Buy	+135	New	+$23.4K	﹤0.01%	636

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

GW&K Investment Management's MASI Position: Q2 2026 in Review

GW&K Investment Management sold out of Masimo (MASI) in Q2 2026, closing a stake of 122,781 shares — an estimated $21.8M sold.

GW&K Investment Management first reported a position in MASI in Q1 2025 and held it in 5 quarters. The position peaked at $21.8M in Q1 2026. 2 funds tracked by Wall St. Rank hold MASI as of Q2 2026.

GW&K Investment Management reported no remaining Masimo position as of Q2 2026 after selling out during the quarter.
GW&K Investment Management sold 122,781 Masimo shares in Q2 2026, an estimated $21.8M.
GW&K Investment Management first reported a position in Masimo in Q1 2025 and held it in 5 quarters.
GW&K Investment Management's Masimo position peaked at $21.8M in Q1 2026.
2 funds tracked by Wall St. Rank held Masimo as of Q2 2026.

Based on GW&K Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.