Twin Tree Management’s Masimo MASI Stock Holding History

Twin Tree 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
2023 Q2	–	Sell	-11,700	Closed	-$2.16M	–	1413
2023 Q1	$2.16M	Buy	+11,700	New	+$1.97M	﹤0.01%	894

Other funds holding MASI

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

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

PCM

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

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

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

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

Holocene Advisors New York $41.5B AUM 42.97% 1-Year Est. Return

Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return

Twin Tree Management's MASI Position: Q2 2025 in Review

Twin Tree Management sold out of Masimo (MASI) in Q2 2025, closing a stake of 175 shares — an estimated $29.2K sold.

Twin Tree Management first reported a position in MASI in Q2 2017 and held it in 17 quarters. The position peaked at $13.2M in Q4 2023. 378 funds tracked by Wall St. Rank hold MASI as of Q2 2025.

Twin Tree Management reported no remaining Masimo position as of Q2 2025 after selling out during the quarter.
Twin Tree Management sold 175 Masimo shares in Q2 2025, an estimated $29.2K.
Twin Tree Management first reported a position in Masimo in Q2 2017 and held it in 17 quarters.
Twin Tree Management's Masimo position peaked at $13.2M in Q4 2023.
378 funds tracked by Wall St. Rank held Masimo as of Q2 2025.

Based on Twin Tree Management's 13F filing for Q2 2025, filed 28 Jul 2025.