EI
MASI

EAM Investors’s Masimo MASI Stock Holding History

EAM Investors’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
Q2 		– Sell
-22,952
Closed -$3.82M – 304
2025
Q1 		$3.82M Buy
+22,952
New +$3.98M 0.66% 53
2020
Q2 		– Sell
-9,678
Closed -$1.71M – 292
2020
Q1 		$1.71M Buy
9,678
+2,399
+33% +$411K 0.53% 75
2019
Q4 		$1.15M Sell
7,279
-2,348
-24% -$353K 0.25% 180
2019
Q3 		$1.43M Sell
9,627
-4,195
-30% -$637K 0.38% 130
2019
Q2 		$2.06M Sell
13,822
-1,263
-8% -$173K 0.5% 63
2019
Q1 		$2.09M Sell
15,085
-1,612
-10% -$202K 0.51% 59
2018
Q4 		$1.79M Sell
16,697
-11,560
-41% -$1.29M 0.49% 66
2018
Q3 		$3.52M Buy
+28,257
New +$3.13M 0.52% 54
2017
Q3 		– Sell
-23,772
Closed -$2.17M – 318
2017
Q2 		$2.17M Sell
23,772
-6,439
-21% -$591K 0.36% 145
2017
Q1 		$2.82M Sell
30,211
-21,445
-42% -$1.77M 0.44% 107
2016
Q4 		$3.48M Buy
51,656
+433
+0.8% +$26.6K 0.46% 51
2016
Q3 		$3.05M Sell
51,223
-1,333
-3% -$75.2K 0.41% 83
2016
Q2 		$2.76M Buy
+52,556
New +$2.48M 0.42% 91
2016
Q1 		– Sell
-86,499
Closed -$3.59M – 322
2015
Q4 		$3.59M Buy
86,499
+18,795
+28% +$768K 0.47% 68
2015
Q3 		$2.61M Sell
67,704
-15,745
-19% -$643K 0.41% 88
2015
Q2 		$3.23M Buy
+83,449
New +$2.99M 0.38% 111

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
PCM
Politan Capital Management New York $985M AUM 3.12% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 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
Holocene Advisors
Holocene Advisors New York $41.5B AUM 42.97% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return

EAM Investors's MASI Position: Q2 2025 in Review

EAM Investors sold out of Masimo (MASI) in Q2 2025, closing a stake of 22,952 shares — an estimated $3.82M sold.

EAM Investors first reported a position in MASI in Q2 2015 and held it in 16 quarters. The position peaked at $3.82M in Q1 2025. 378 funds tracked by Wall St. Rank hold MASI as of Q2 2025.

  • EAM Investors reported no remaining Masimo position as of Q2 2025 after selling out during the quarter.
  • EAM Investors sold 22,952 Masimo shares in Q2 2025, an estimated $3.82M.
  • EAM Investors first reported a position in Masimo in Q2 2015 and held it in 16 quarters.
  • EAM Investors's Masimo position peaked at $3.82M in Q1 2025.
  • 378 funds tracked by Wall St. Rank held Masimo as of Q2 2025.

Based on EAM Investors's 13F filing for Q2 2025, filed 12 Aug 2025.