UBS AM
MASI

UBS AM’s Masimo MASI Stock Holding History

UBS AM’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 		$23.8M Buy
133,689
+14,725
+12% +$2.31M ﹤0.01% 823
2025
Q4 		$15.5M Buy
118,964
+9,854
+9% +$1.41M ﹤0.01% 944
2025
Q3 		$16.1M Sell
109,110
-100,453
-48% -$15.2M ﹤0.01% 914
2025
Q2 		$35.3M Buy
209,563
+20,433
+11% +$3.26M 0.01% 814
2025
Q1 		$31.5M Sell
189,130
-1,116
-0.6% -$194K 0.01% 788
2024
Q4 		$31.4M Buy
190,246
+77,775
+69% +$12.3M 0.01% 789
2024
Q3 		$15M Sell
112,471
-8,357
-7% -$970K ﹤0.01% 1063
2024
Q2 		$15.2M Buy
120,828
+37,646
+45% +$4.96M ﹤0.01% 972
2024
Q1 		$12.2M Sell
83,182
-19,093
-19% -$2.47M ﹤0.01% 933
2023
Q4 		$12M Buy
102,275
+1,117
+1% +$104K ﹤0.01% 923
2023
Q3 		$8.87M Sell
101,158
-72,818
-42% -$8.48M ﹤0.01% 994
2023
Q2 		$32.1M Hold
173,976
– – 0.02% 665
2023
Q1 		$32.1M Sell
173,976
-1,619
-0.9% -$273K 0.02% 665
2022
Q4 		$26M Sell
175,595
-150,644
-46% -$20.7M 0.01% 689
2022
Q3 		$46.1M Buy
326,239
+51,100
+19% +$7.47M 0.03% 571
2022
Q2 		$36M Buy
275,139
+10,156
+4% +$1.36M 0.02% 617
2022
Q1 		$38.6M Sell
264,983
-4,490
-2% -$862K 0.02% 680
2021
Q4 		$78.9M Buy
269,473
+939
+0.3% +$267K 0.03% 531
2021
Q3 		$72.7M Sell
268,534
-1,215
-0.5% -$329K 0.03% 531
2021
Q2 		$65.4M Buy
269,749
+13,726
+5% +$3.13M 0.03% 572
2021
Q1 		$58.8M Sell
256,023
-5,815
-2% -$1.46M 0.03% 583
2020
Q4 		$70.3M Buy
261,838
+32,914
+14% +$8.21M 0.03% 493
2020
Q3 		$54M Buy
228,924
+45,705
+25% +$10.2M 0.03% 500
2020
Q2 		$41.8M Buy
183,219
+109,773
+149% +$24.1M 0.03% 552
2020
Q1 		$13M Buy
73,446
+11,056
+18% +$1.9M 0.01% 792
2019
Q4 		$9.86M Buy
62,390
+379
+0.6% +$57K 0.01% 949
2019
Q3 		$9.23M Buy
62,011
+3,317
+6% +$504K 0.01% 979
2019
Q2 		$8.73M Buy
58,694
+2,706
+5% +$371K 0.01% 1002
2019
Q1 		$7.74M Buy
55,988
+10,341
+23% +$1.3M 0.01% 1007
2018
Q4 		$4.9M Buy
45,647
+1,251
+3% +$139K ﹤0.01% 1097
2018
Q3 		$5.53M Buy
44,396
+7,095
+19% +$787K ﹤0.01% 1117
2018
Q2 		$3.64M Buy
37,301
+6,335
+20% +$602K ﹤0.01% 1269
2018
Q1 		$2.72M Sell
30,966
-32,622
-51% -$2.84M ﹤0.01% 1341
2017
Q4 		$5.39M Buy
63,588
+6,711
+12% +$582K ﹤0.01% 1087
2017
Q3 		$4.92M Sell
56,877
-609
-1% -$53.9K ﹤0.01% 1093
2017
Q2 		$5.24M Buy
57,486
+34,105
+146% +$3.13M 0.01% 1027
2017
Q1 		$2.18M Buy
23,381
+5,535
+31% +$456K ﹤0.01% 1314
2016
Q4 		$1.2M Sell
17,846
-14,525
-45% -$893K ﹤0.01% 1482
2016
Q3 		$1.93M Buy
32,371
+3,516
+12% +$198K ﹤0.01% 1392
2016
Q2 		$1.51M Buy
28,855
+467
+2% +$22K ﹤0.01% 1466
2016
Q1 		$1.19M Sell
28,388
-4,010
-12% -$151K ﹤0.01% 1572
2015
Q4 		$1.34M Buy
32,398
+100
+0.3% +$4.09K ﹤0.01% 1624
2015
Q3 		$1.25M Buy
32,298
+7,000
+28% +$286K ﹤0.01% 1634
2015
Q2 		$980K Buy
25,298
+3,000
+13% +$107K ﹤0.01% 1689
2015
Q1 		$735K Buy
22,298
+800
+4% +$23K ﹤0.01% 1766
2014
Q4 		$566K Hold
21,498
– – ﹤0.01% 1879
2014
Q3 		$457K Buy
21,498
+1,400
+7% +$32K ﹤0.01% 1934
2014
Q2 		$474K Hold
20,098
– – ﹤0.01% 1931
2014
Q1 		$549K Hold
20,098
– – ﹤0.01% 1838
2013
Q4 		$587K Sell
20,098
-300
-1% -$8.4K ﹤0.01% 1733
2013
Q3 		$543K Sell
20,398
-77,800
-79% -$1.92M ﹤0.01% 1738
2013
Q2 		$2.08M Buy
+98,198
New +$2.07M ﹤0.01% 1201

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

UBS AM's MASI Position: Q1 2026 in Review

UBS AM increased its Masimo (MASI) stake by 12% in Q1 2026, buying an estimated $2.31M and bringing the position to 133,689 shares worth $23.8M. The position accounts for ﹤0.01% of the portfolio, ranked #823.

UBS AM first reported a position in MASI in Q2 2013 and has held it in 52 quarters since. The position peaked at $78.9M in Q4 2021. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • UBS AM held 133,689 shares of Masimo worth $23.8M as of Q1 2026.
  • UBS AM bought 14,725 Masimo shares in Q1 2026, an estimated $2.31M.
  • Masimo made up ﹤0.01% of UBS AM's portfolio in Q1 2026, its #823 holding.
  • UBS AM first reported a position in Masimo in Q2 2013 and has held it in 52 quarters since.
  • UBS AM's Masimo position peaked at $78.9M in Q4 2021.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on UBS AM's 13F filing for Q1 2026, filed 13 May 2026.