PCM
MASI

Polymer Capital Management’s Masimo MASI Stock Holding History

Polymer Capital Management’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 		$427K Sell
2,398
-7,125
-75% -$1.12M 0.04% 475
2025
Q4 		$1.24M Buy
9,523
+3,647
+62% +$522K 0.13% 185
2025
Q3 		$867K Buy
+5,876
New +$890K 0.09% 233

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

Polymer Capital Management's MASI Position: Q1 2026 in Review

Polymer Capital Management reduced its Masimo (MASI) stake by 75% in Q1 2026, selling an estimated $1.12M and leaving 2,398 shares worth $427K. The position accounts for 0.04% of the portfolio, ranked #475.

Polymer Capital Management first reported a position in MASI in Q3 2025 and has held it in 3 quarters since. The position peaked at $1.24M in Q4 2025. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Polymer Capital Management held 2,398 shares of Masimo worth $427K as of Q1 2026.
  • Polymer Capital Management sold 7,125 Masimo shares in Q1 2026, an estimated $1.12M.
  • Masimo made up 0.04% of Polymer Capital Management's portfolio in Q1 2026, its #475 holding.
  • Polymer Capital Management first reported a position in Masimo in Q3 2025 and has held it in 3 quarters since.
  • Polymer Capital Management's Masimo position peaked at $1.24M in Q4 2025.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Polymer Capital Management's 13F filing for Q1 2026, filed 14 May 2026.