Two Sigma Investments
MASI

Two Sigma Investments’s Masimo MASI Stock Holding History

Two Sigma 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
2022
Q1 		– Sell
-6,500
Closed -$1.9M – 3643
2021
Q4 		$1.9M Buy
6,500
+1,000
+18% +$285K ﹤0.01% 1956
2021
Q3 		$1.49M Sell
5,500
-800
-13% -$217K ﹤0.01% 2250
2021
Q2 		$1.53M Buy
6,300
+3,800
+152% +$867K ﹤0.01% 2116
2021
Q1 		$574K Sell
2,500
-300
-11% -$75.4K ﹤0.01% 2805
2020
Q4 		$751K Sell
2,800
-1,900
-40% -$474K ﹤0.01% 2210
2020
Q3 		$1.11M Buy
+4,700
New +$1.05M ﹤0.01% 1685

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

Two Sigma Investments's MASI Position: Q3 2025 in Review

Two Sigma Investments sold out of Masimo (MASI) in Q3 2025, closing a stake of 15,465 shares — an estimated $2.6M sold.

Two Sigma Investments first reported a position in MASI in Q2 2014 and held it in 39 quarters. The position peaked at $86.6M in Q1 2022. 358 funds tracked by Wall St. Rank hold MASI as of Q3 2025.

  • Two Sigma Investments reported no remaining Masimo position as of Q3 2025 after selling out during the quarter.
  • Two Sigma Investments sold 15,465 Masimo shares in Q3 2025, an estimated $2.6M.
  • Two Sigma Investments first reported a position in Masimo in Q2 2014 and held it in 39 quarters.
  • Two Sigma Investments's Masimo position peaked at $86.6M in Q1 2022.
  • 358 funds tracked by Wall St. Rank held Masimo as of Q3 2025.

Based on Two Sigma Investments's 13F filing for Q3 2025, filed 14 Nov 2025.