AI
MASI

Atria Investments’s Masimo MASI Stock Holding History

Atria Investments’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
2025
Q3 		– Sell
-1,928
Closed -$324K – 2109
2025
Q2 		$324K Sell
1,928
-189
-9% -$30.2K ﹤0.01% 1677
2025
Q1 		$353K Buy
2,117
+91
+4% +$15.8K ﹤0.01% 1529
2024
Q4 		$335K Buy
+2,026
New +$320K ﹤0.01% 1543
2020
Q1 		– Sell
-1,280
Closed -$202K – 929
2019
Q4 		$202K Buy
+1,280
New +$192K 0.01% 1151

Other funds holding MASI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
PCM
Politan Capital Management New York $985M AUM 3.12% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return

Atria Investments's MASI Position: Q3 2025 in Review

Atria Investments sold out of Masimo (MASI) in Q3 2025, closing a stake of 1,928 shares — an estimated $324K sold.

Atria Investments first reported a position in MASI in Q4 2019 and held it in 4 quarters. The position peaked at $353K in Q1 2025. 358 funds tracked by Wall St. Rank hold MASI as of Q3 2025.

  • Atria Investments reported no remaining Masimo position as of Q3 2025 after selling out during the quarter.
  • Atria Investments sold 1,928 Masimo shares in Q3 2025, an estimated $324K.
  • Atria Investments first reported a position in Masimo in Q4 2019 and held it in 4 quarters.
  • Atria Investments's Masimo position peaked at $353K in Q1 2025.
  • 358 funds tracked by Wall St. Rank held Masimo as of Q3 2025.

Based on Atria Investments's 13F filing for Q3 2025, filed 6 Nov 2025.