Schroder Investment Management Group
MASI

Schroder Investment Management Group’s Masimo MASI Stock Holding History

Schroder Investment Management Group’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 		$17.1M Sell
96,179
-379,325
-80% -$59.5M 0.01% 561
2025
Q4 		$62.3M Buy
475,504
+138,854
+41% +$19.9M 0.05% 265
2025
Q3 		$48.1M Sell
336,650
-111,851
-25% -$16.9M 0.04% 312
2025
Q2 		$75.4M Buy
448,501
+12,953
+3% +$2.07M 0.06% 219
2025
Q1 		$71.2M Sell
435,548
-130,921
-23% -$22.7M 0.07% 211
2024
Q4 		$95.5M Sell
566,469
-166,152
-23% -$26.2M 0.09% 176
2024
Q3 		$97.6M Buy
732,621
+203,998
+39% +$23.7M 0.1% 174
2024
Q2 		$66.6M Buy
528,623
+1,287
+0.2% +$169K 0.07% 223
2024
Q1 		$77.4M Sell
527,336
-350,203
-40% -$45.2M 0.09% 195
2023
Q4 		$103M Buy
877,539
+327,863
+60% +$30.6M 0.13% 146
2023
Q3 		$48.2M Sell
549,676
-93,379
-15% -$10.9M 0.07% 259
2023
Q2 		$106M Sell
643,055
-55,933
-8% -$9.74M 0.15% 139
2023
Q1 		$129M Buy
698,988
+121,711
+21% +$20.5M 0.19% 105
2022
Q4 		$85.4M Buy
577,277
+178,753
+45% +$24.6M 0.14% 154
2022
Q3 		$56.3M Buy
398,524
+56,387
+16% +$8.24M 0.09% 225
2022
Q2 		$44.7M Buy
342,137
+230,073
+205% +$30.8M 0.07% 275
2022
Q1 		$17.4M Sell
112,064
-95,002
-46% -$18.2M 0.02% 534
2021
Q4 		$60.6M Buy
207,066
+10,434
+5% +$2.97M 0.08% 253
2021
Q3 		$53.2M Sell
196,632
-93,809
-32% -$25.4M 0.08% 256
2021
Q2 		$70.4M Buy
290,441
+90,060
+45% +$20.5M 0.09% 228
2021
Q1 		$46M Buy
200,381
+1,530
+0.8% +$384K 0.06% 323
2020
Q4 		$53.4M Sell
198,851
-67,508
-25% -$16.8M 0.08% 266
2020
Q3 		$62.4M Sell
266,359
-9,618
-3% -$2.16M 0.1% 188
2020
Q2 		$62.9M Sell
275,977
-37,343
-12% -$8.2M 0.11% 184
2020
Q1 		$58M Sell
313,320
-156,200
-33% -$26.8M 0.12% 170
2019
Q4 		$74.2M Buy
469,520
+8,916
+2% +$1.34M 0.12% 195
2019
Q3 		$67.5M Sell
460,604
-75,209
-14% -$11.4M 0.12% 203
2019
Q2 		$79.7M Sell
535,813
-70,342
-12% -$9.65M 0.15% 161
2019
Q1 		$83.8M Buy
606,155
+99,857
+20% +$12.5M 0.15% 149
2018
Q4 		$54.4K Buy
506,298
+96,209
+23% +$10.7M 0.1% 226
2018
Q3 		$51.1M Sell
410,089
-36,787
-8% -$4.08M 0.09% 275
2018
Q2 		$44.1M Sell
446,876
-4,390
-1% -$417K 0.08% 294
2018
Q1 		$39.7M Sell
451,266
-16,754
-4% -$1.46M 0.07% 312
2017
Q4 		$39.7M Buy
468,020
+129,905
+38% +$11.3M 0.07% 341
2017
Q3 		$28.7M Buy
338,115
+48,300
+17% +$4.27M 0.05% 398
2017
Q2 		$26.5M Sell
289,815
-51,632
-15% -$4.74M 0.05% 406
2017
Q1 		$32M Sell
341,447
-84,072
-20% -$6.92M 0.06% 364
2016
Q4 		$28.7M Sell
425,519
-146,359
-26% -$9M 0.05% 398
2016
Q3 		$34M Sell
571,878
-60,815
-10% -$3.43M 0.06% 348
2016
Q2 		$33.2M Sell
632,693
-68,500
-10% -$3.23M 0.07% 350
2016
Q1 		$28.6M Sell
701,193
-41,300
-6% -$1.55M 0.06% 381
2015
Q4 		$30.8M Sell
742,493
-258,400
-26% -$10.6M 0.06% 356
2015
Q3 		$38.6M Sell
1,000,893
-5,361
-0.5% -$219K 0.08% 303
2015
Q2 		$38.8M Buy
1,006,254
+64,749
+7% +$2.32M 0.08% 322
2015
Q1 		$30M Buy
941,505
+13,000
+1% +$374K 0.06% 379
2014
Q4 		$24.5M Buy
928,505
+121,100
+15% +$2.99M 0.05% 431
2014
Q3 		$17.2M Sell
807,405
-23,500
-3% -$537K 0.02% 538
2014
Q2 		$19.6M Buy
830,905
+93,400
+13% +$2.32M 0.02% 489
2014
Q1 		$20.1M Sell
737,505
-253,100
-26% -$7.22M 0.02% 486
2013
Q4 		$29M Buy
990,605
+159,500
+19% +$4.46M 0.04% 378
2013
Q3 		$22.1M Buy
831,105
+19,800
+2% +$488K 0.05% 407
2013
Q2 		$17.2M Buy
+811,305
New +$17.1M 0.05% 460

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

Schroder Investment Management Group's MASI Position: Q1 2026 in Review

Schroder Investment Management Group reduced its Masimo (MASI) stake by 80% in Q1 2026, selling an estimated $59.5M and leaving 96,179 shares worth $17.1M. The position accounts for 0.01% of the portfolio, ranked #561.

Schroder Investment Management Group first reported a position in MASI in Q2 2013 and has held it in 52 quarters since. The position peaked at $129M in Q1 2023. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Schroder Investment Management Group held 96,179 shares of Masimo worth $17.1M as of Q1 2026.
  • Schroder Investment Management Group sold 379,325 Masimo shares in Q1 2026, an estimated $59.5M.
  • Masimo made up 0.01% of Schroder Investment Management Group's portfolio in Q1 2026, its #561 holding.
  • Schroder Investment Management Group first reported a position in Masimo in Q2 2013 and has held it in 52 quarters since.
  • Schroder Investment Management Group's Masimo position peaked at $129M in Q1 2023.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Schroder Investment Management Group's 13F filing for Q1 2026, filed 14 May 2026.