KIA
MASI

Knollwood Investment Advisory’s Masimo MASI Stock Holding History

Knollwood Investment Advisory’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 		$202K Buy
+1,137
New +$178K 0.02% 298
2025
Q3 		– Sell
-1,200
Closed -$202K – 361
2025
Q2 		$202K Buy
+1,200
New +$192K 0.02% 352

Other funds holding MASI

BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $315B AUM 27.84% 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 $3.37T AUM 44.26% 1-Year Est. Return

Knollwood Investment Advisory's MASI Position: Q1 2026 in Review

Knollwood Investment Advisory opened a new position in Masimo (MASI) in Q1 2026: 1,137 shares worth $202K. The stake represents 0.02% of the portfolio and ranks #298 among its holdings. This is a return to the name: Knollwood Investment Advisory previously reported a position in MASI as recently as Q2 2025.

Knollwood Investment Advisory first reported a position in MASI in Q2 2025 and has held it in 2 quarters since. 446 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Knollwood Investment Advisory held 1,137 shares of Masimo worth $202K as of Q1 2026.
  • Masimo was a new Knollwood Investment Advisory position in Q1 2026.
  • Masimo made up 0.02% of Knollwood Investment Advisory's portfolio in Q1 2026, its #298 holding.
  • Knollwood Investment Advisory first reported a position in Masimo in Q2 2025 and has held it in 2 quarters since.
  • 446 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Knollwood Investment Advisory's 13F filing for Q1 2026, filed 14 May 2026.