SI
MASI

Sofinnova Investments’s Masimo MASI Stock Holding History

Sofinnova Investments’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
-46,201
Closed -$6.01M – 85
2025
Q4 		$6.01M Buy
+46,201
New +$6.62M 0.26% 45
2024
Q3 		– Sell
-20,161
Closed -$2.54M – 79
2024
Q2 		$2.54M Buy
20,161
+161
+0.8% +$21.2K 0.13% 63
2024
Q1 		$2.94M Buy
20,000
+7,200
+56% +$930K 0.16% 53
2023
Q4 		$1.5M Buy
+12,800
New +$1.19M 0.08% 46

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

Sofinnova Investments's MASI Position: Q1 2026 in Review

Sofinnova Investments sold out of Masimo (MASI) in Q1 2026, closing a stake of 46,201 shares — an estimated $6.01M sold.

Sofinnova Investments first reported a position in MASI in Q4 2023 and held it in 4 quarters. The position peaked at $6.01M in Q4 2025. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Sofinnova Investments reported no remaining Masimo position as of Q1 2026 after selling out during the quarter.
  • Sofinnova Investments sold 46,201 Masimo shares in Q1 2026, an estimated $6.01M.
  • Sofinnova Investments first reported a position in Masimo in Q4 2023 and held it in 4 quarters.
  • Sofinnova Investments's Masimo position peaked at $6.01M in Q4 2025.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Sofinnova Investments's 13F filing for Q1 2026, filed 15 May 2026.