Barclays’s Masimo MASI Stock Holding History

Barclays’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
2024 Q1	–	Sell	-13,500	Closed	-$1.58M	–	5264
2023 Q4	$1.58M	Buy	+13,500	New	+$1.26M	﹤0.01%	3101

Other funds holding MASI

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

PCM

Politan Capital Management New York $985M AUM 3.12% 1-Year Est. Return

PCM

Pentwater Capital Management Naples, Florida $19.3B AUM 58.13% 1-Year Est. Return

HBK Investments Dallas, Texas $9.85B AUM 55.6% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Barclays's MASI Position: Q1 2026 in Review

Barclays increased its Masimo (MASI) stake by 4,602% in Q1 2026, buying an estimated $422M and bringing the position to 2,743,985 shares worth $488M. The position accounts for 0.12% of the portfolio, ranked #131.

Barclays first reported a position in MASI in Q2 2013 and has held it in 52 quarters since. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

Barclays held 2,743,985 shares of Masimo worth $488M as of Q1 2026.
Barclays bought 2,685,627 Masimo shares in Q1 2026, an estimated $422M.
Masimo made up 0.12% of Barclays's portfolio in Q1 2026, its #131 holding.
Barclays first reported a position in Masimo in Q2 2013 and has held it in 52 quarters since.
445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Barclays's 13F filing for Q1 2026, filed 15 May 2026.