Capital Research Global Investors
MASI

Capital Research Global Investors’s Masimo MASI Stock Holding History

Capital Research Global 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
2026
Q1 		$63.9M Sell
359,058
-278,836
-44% -$43.8M 0.01% 339
2025
Q4 		$83M Sell
637,894
-1,216,234
-66% -$174M 0.02% 316
2025
Q3 		$274M Sell
1,854,128
-1,542
-0.1% -$233K 0.05% 193
2025
Q2 		$312M Sell
1,855,670
-200,425
-10% -$32M 0.06% 176
2025
Q1 		$343M Sell
2,056,095
-398,880
-16% -$69.2M 0.07% 164
2024
Q4 		$406M Buy
2,454,975
+1,094,647
+80% +$173M 0.08% 151
2024
Q3 		$181M Buy
1,360,328
+303,192
+29% +$35.2M 0.04% 231
2024
Q2 		$133M Sell
1,057,136
-1,212,110
-53% -$160M 0.03% 253
2024
Q1 		$333M Buy
2,269,246
+57
+0% +$7.36K 0.08% 179
2023
Q4 		$266M Buy
2,269,189
+136,617
+6% +$12.7M 0.07% 202
2023
Q3 		$187M Buy
2,132,572
+480,048
+29% +$55.9M 0.05% 237
2023
Q2 		$272M Buy
1,652,524
+974
+0.1% +$170K 0.07% 196
2023
Q1 		$305M Buy
1,651,550
+700,831
+74% +$118M 0.09% 181
2022
Q4 		$141M Buy
+950,719
New +$131M 0.04% 248

Other funds holding MASI

BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $315B AUM 27.84% 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 $3.37T AUM 44.26% 1-Year Est. Return

Capital Research Global Investors's MASI Position: Q1 2026 in Review

Capital Research Global Investors reduced its Masimo (MASI) stake by 44% in Q1 2026, selling an estimated $43.8M and leaving 359,058 shares worth $63.9M. The position accounts for 0.01% of the portfolio, ranked #339.

Capital Research Global Investors first reported a position in MASI in Q4 2022 and has held it in 14 quarters since. The position peaked at $406M in Q4 2024. 446 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Capital Research Global Investors held 359,058 shares of Masimo worth $63.9M as of Q1 2026.
  • Capital Research Global Investors sold 278,836 Masimo shares in Q1 2026, an estimated $43.8M.
  • Masimo made up 0.01% of Capital Research Global Investors's portfolio in Q1 2026, its #339 holding.
  • Capital Research Global Investors first reported a position in Masimo in Q4 2022 and has held it in 14 quarters since.
  • Capital Research Global Investors's Masimo position peaked at $406M in Q4 2024.
  • 446 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Capital Research Global Investors's 13F filing for Q1 2026, filed 13 May 2026.