T. Rowe Price Associates
MASI

T. Rowe Price Associates’s Masimo MASI Stock Holding History

T. Rowe Price Associates’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 		$8.15M Sell
45,830
-167,764
-79% -$26.3M ﹤0.01% 1261
2025
Q4 		$27.8M Sell
213,594
-301,352
-59% -$43.2M ﹤0.01% 976
2025
Q3 		$76M Buy
514,946
+109,486
+27% +$16.6M 0.01% 677
2025
Q2 		$68.2M Buy
405,460
+122,823
+43% +$19.6M 0.01% 651
2025
Q1 		$47.1M Buy
282,637
+31,851
+13% +$5.53M 0.01% 741
2024
Q4 		$41.5M Buy
250,786
+181,070
+260% +$28.6M ﹤0.01% 812
2024
Q3 		$9.3M Buy
69,716
+1,427
+2% +$166K ﹤0.01% 1150
2024
Q2 		$8.6M Sell
68,289
-3,259
-5% -$429K ﹤0.01% 1130
2024
Q1 		$10.5M Sell
71,548
-338,960
-83% -$43.8M ﹤0.01% 1099
2023
Q4 		$48.1M Sell
410,508
-41,431
-9% -$3.86M 0.01% 725
2023
Q3 		$39.6M Buy
451,939
+431,836
+2,148% +$50.3M 0.01% 754
2023
Q2 		$3.31M Sell
20,103
-96,568
-83% -$16.8M ﹤0.01% 1315
2023
Q1 		$21.5M Buy
116,671
+91,648
+366% +$15.5M ﹤0.01% 904
2022
Q4 		$3.7M Sell
25,023
-1,239
-5% -$170K ﹤0.01% 1254
2022
Q3 		$3.71M Sell
26,262
-124,272
-83% -$18.2M ﹤0.01% 1257
2022
Q2 		$19.7M Buy
150,534
+50,828
+51% +$6.8M ﹤0.01% 1166
2022
Q1 		$14.5M Buy
99,706
+71,521
+254% +$13.7M ﹤0.01% 1309
2021
Q4 		$8.25M Buy
28,185
+232
+0.8% +$66.1K ﹤0.01% 1432
2021
Q3 		$7.57M Buy
27,953
+3,085
+12% +$836K ﹤0.01% 1460
2021
Q2 		$6.03M Sell
24,868
-3,185
-11% -$727K ﹤0.01% 1477
2021
Q1 		$6.44M Sell
28,053
-1,461
-5% -$367K ﹤0.01% 1440
2020
Q4 		$7.92M Sell
29,514
-1,189
-4% -$297K ﹤0.01% 1386
2020
Q3 		$7.25M Sell
30,703
-257,739
-89% -$57.8M ﹤0.01% 1361
2020
Q2 		$65.8M Sell
288,442
-291,828
-50% -$64M 0.01% 759
2020
Q1 		$103M Sell
580,270
-4,509
-0.8% -$773K 0.02% 566
2019
Q4 		$92.4M Sell
584,779
-117,441
-17% -$17.7M 0.01% 691
2019
Q3 		$104M Buy
702,220
+126,649
+22% +$19.2M 0.01% 622
2019
Q2 		$85.7M Buy
575,571
+12,395
+2% +$1.7M 0.01% 694
2019
Q1 		$77.9M Buy
563,176
+11,994
+2% +$1.51M 0.01% 708
2018
Q4 		$59.2M Buy
551,182
+30,977
+6% +$3.45M 0.01% 760
2018
Q3 		$64.8M Buy
520,205
+71,499
+16% +$7.93M 0.01% 813
2018
Q2 		$43.8M Sell
448,706
-29,582
-6% -$2.81M 0.01% 947
2018
Q1 		$42.1M Sell
478,288
-16,121
-3% -$1.41M 0.01% 935
2017
Q4 		$41.9M Sell
494,409
-2,664
-0.5% -$231K 0.01% 928
2017
Q3 		$43M Buy
497,073
+21,706
+5% +$1.92M 0.01% 906
2017
Q2 		$43.3M Buy
475,367
+2,714
+0.6% +$249K 0.01% 876
2017
Q1 		$44.1M Buy
472,653
+41,650
+10% +$3.43M 0.01% 854
2016
Q4 		$29.1M Sell
431,003
-71,017
-14% -$4.36M 0.01% 1005
2016
Q3 		$29.9M Buy
502,020
+35,740
+8% +$2.02M 0.01% 989
2016
Q2 		$24.5M Buy
466,280
+23,500
+5% +$1.11M 0.01% 1029
2016
Q1 		$18.5M Buy
442,780
+7,940
+2% +$299K ﹤0.01% 1107
2015
Q4 		$18.1M Buy
434,840
+59,320
+16% +$2.42M ﹤0.01% 1116
2015
Q3 		$14.5M Buy
375,520
+100,990
+37% +$4.13M ﹤0.01% 1202
2015
Q2 		$10.6M Buy
274,530
+37,600
+16% +$1.35M ﹤0.01% 1331
2015
Q1 		$7.81M Buy
236,930
+10,400
+5% +$299K ﹤0.01% 1395
2014
Q4 		$5.97M Sell
226,530
-19,800
-8% -$489K ﹤0.01% 1435
2014
Q3 		$5.24M Hold
246,330
– – ﹤0.01% 1447
2014
Q2 		$5.81M Buy
246,330
+14,600
+6% +$362K ﹤0.01% 1433
2014
Q1 		$6.33M Sell
231,730
-1,700
-0.7% -$48.5K ﹤0.01% 1393
2013
Q4 		$6.82M Buy
233,430
+26,900
+13% +$753K ﹤0.01% 1383
2013
Q3 		$5.5M Buy
206,530
+7,700
+4% +$190K ﹤0.01% 1408
2013
Q2 		$4.21M Buy
+198,830
New +$4.18M ﹤0.01% 1435

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

T. Rowe Price Associates's MASI Position: Q1 2026 in Review

T. Rowe Price Associates reduced its Masimo (MASI) stake by 79% in Q1 2026, selling an estimated $26.3M and leaving 45,830 shares worth $8.15M. The position accounts for ﹤0.01% of the portfolio, ranked #1261.

T. Rowe Price Associates first reported a position in MASI in Q2 2013 and has held it in 52 quarters since. The position peaked at $104M in Q3 2019. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • T. Rowe Price Associates held 45,830 shares of Masimo worth $8.15M as of Q1 2026.
  • T. Rowe Price Associates sold 167,764 Masimo shares in Q1 2026, an estimated $26.3M.
  • Masimo made up ﹤0.01% of T. Rowe Price Associates's portfolio in Q1 2026, its #1261 holding.
  • T. Rowe Price Associates first reported a position in Masimo in Q2 2013 and has held it in 52 quarters since.
  • T. Rowe Price Associates's Masimo position peaked at $104M in Q3 2019.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on T. Rowe Price Associates's 13F filing for Q1 2026, filed 15 May 2026.