Fidelity International
MASI

Fidelity International’s Masimo MASI Stock Holding History

Fidelity International’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
2026
Q1 		$85.7M Buy
+482,000
New +$75.6M 0.07% 259
2025
Q3 		– Sell
-56,326
Closed -$9.48M – 1036
2025
Q2 		$9.48M Sell
56,326
-113,462
-67% -$18.1M 0.01% 550
2025
Q1 		$28.3M Buy
169,788
+59,456
+54% +$10.3M 0.03% 405
2024
Q4 		$18.2M Buy
110,332
+4,624
+4% +$730K 0.02% 458
2024
Q3 		$14.1M Buy
105,708
+29,561
+39% +$3.43M 0.01% 512
2024
Q2 		$9.59M Buy
76,147
+2,960
+4% +$390K 0.01% 529
2024
Q1 		$10.7M Sell
73,187
-143,287
-66% -$18.5M 0.01% 516
2023
Q4 		$25.4M Buy
216,474
+99,004
+84% +$9.23M 0.03% 385
2023
Q3 		$10.3M Buy
+117,470
New +$13.7M 0.01% 490

Other funds holding MASI

BlackRock
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
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return
HI
HBK Investments Dallas, Texas $9.85B AUM 55.6% 1-Year Est. Return
Massachusetts Financial Services
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
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Fidelity International's MASI Position: Q1 2026 in Review

Fidelity International opened a new position in Masimo (MASI) in Q1 2026: 482,000 shares worth $85.7M. The stake represents 0.07% of the portfolio and ranks #259 among its holdings. This is a return to the name: Fidelity International previously reported a position in MASI as recently as Q2 2025.

Fidelity International first reported a position in MASI in Q3 2023 and has held it in 9 quarters since. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Fidelity International held 482,000 shares of Masimo worth $85.7M as of Q1 2026.
  • Masimo was a new Fidelity International position in Q1 2026.
  • Masimo made up 0.07% of Fidelity International's portfolio in Q1 2026, its #259 holding.
  • Fidelity International first reported a position in Masimo in Q3 2023 and has held it in 9 quarters since.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

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