DDC
MASI

DF Dent & Co’s Masimo MASI Stock Holding History

DF Dent & Co’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 		– Sell
-142,626
Closed -$18.6M – 274
2025
Q4 		$18.6M Buy
142,626
+33,973
+31% +$4.86M 0.27% 81
2025
Q3 		$16M Buy
+108,653
New +$16.4M 0.21% 87
2022
Q2 		– Sell
-41,681
Closed -$6.07M – 242
2022
Q1 		$6.07M Sell
41,681
-262,211
-86% -$50.3M 0.07% 95
2021
Q4 		$89M Sell
303,892
-20,263
-6% -$5.77M 0.89% 39
2021
Q3 		$87.8M Buy
324,155
+22,498
+7% +$6.1M 0.9% 40
2021
Q2 		$73.1M Buy
301,657
+99,966
+50% +$22.8M 0.78% 41
2021
Q1 		$46.3M Buy
201,691
+91,272
+83% +$22.9M 0.54% 44
2020
Q4 		$29.6M Buy
+110,419
New +$27.5M 0.34% 47

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

DF Dent & Co's MASI Position: Q1 2026 in Review

DF Dent & Co sold out of Masimo (MASI) in Q1 2026, closing a stake of 142,626 shares — an estimated $18.6M sold.

DF Dent & Co first reported a position in MASI in Q4 2020 and held it in 8 quarters. The position peaked at $89M in Q4 2021. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • DF Dent & Co reported no remaining Masimo position as of Q1 2026 after selling out during the quarter.
  • DF Dent & Co sold 142,626 Masimo shares in Q1 2026, an estimated $18.6M.
  • DF Dent & Co first reported a position in Masimo in Q4 2020 and held it in 8 quarters.
  • DF Dent & Co's Masimo position peaked at $89M in Q4 2021.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on DF Dent & Co's 13F filing for Q1 2026, filed 15 May 2026.