HF
MASI

HRT Financial’s Masimo MASI Stock Holding History

HRT Financial’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 		$47.1M Buy
264,837
+172,061
+185% +$27M 0.12% 137
2025
Q4 		$12.1M Buy
+92,776
New +$13.3M 0.04% 380
2025
Q1 		– Sell
-8,033
Closed -$1.33M – 3025
2024
Q4 		$1.33M Sell
8,033
-39,976
-83% -$6.31M 0.01% 932
2024
Q3 		$6.4M Buy
48,009
+24,644
+105% +$2.86M 0.03% 366
2024
Q2 		$2.94M Buy
+23,365
New +$3.08M 0.02% 584
2023
Q4 		– Sell
-18,843
Closed -$1.65M – 2764
2023
Q3 		$1.65M Buy
+18,843
New +$2.19M 0.02% 708
2023
Q2 		– Sell
-48,289
Closed -$8.91M – 2924
2023
Q1 		$8.91M Buy
+48,289
New +$8.15M 0.11% 154
2022
Q4 		– Sell
-28,399
Closed -$4.01M – 2860
2022
Q3 		$4.01M Buy
+28,399
New +$4.15M 0.04% 362
2022
Q2 		– Sell
-26,423
Closed -$3.85M – 3375
2022
Q1 		$3.85M Buy
+26,423
New +$5.07M 0.03% 362
2021
Q4 		– Sell
-9,129
Closed -$2.47M – 3700
2021
Q3 		$2.47M Sell
9,129
-2,660
-23% -$721K 0.02% 606
2021
Q2 		$2.86M Buy
11,789
+3,397
+40% +$775K 0.03% 473
2021
Q1 		$1.93M Buy
+8,392
New +$2.11M 0.02% 641
2020
Q3 		– Sell
-5,690
Closed -$1.3M – 2174
2020
Q2 		$1.3M Buy
+5,690
New +$1.25M 0.04% 463
2020
Q1 		– Sell
-2,229
Closed -$352K – 1114
2019
Q4 		$352K Sell
2,229
-7,590
-77% -$1.14M 0.02% 679
2019
Q3 		$1.46M Buy
+9,819
New +$1.49M 0.07% 248

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

HRT Financial's MASI Position: Q1 2026 in Review

HRT Financial increased its Masimo (MASI) stake by 185% in Q1 2026, buying an estimated $27M and bringing the position to 264,837 shares worth $47.1M. The position accounts for 0.12% of the portfolio, ranked #137.

HRT Financial first reported a position in MASI in Q3 2019 and has held it in 15 quarters since. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • HRT Financial held 264,837 shares of Masimo worth $47.1M as of Q1 2026.
  • HRT Financial bought 172,061 Masimo shares in Q1 2026, an estimated $27M.
  • Masimo made up 0.12% of HRT Financial's portfolio in Q1 2026, its #137 holding.
  • HRT Financial first reported a position in Masimo in Q3 2019 and has held it in 15 quarters since.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on HRT Financial's 13F filing for Q1 2026, filed 14 May 2026.