SC
MASI

SummitTX Capital’s Masimo MASI Stock Holding History

SummitTX Capital’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 		$1.25M Buy
7,000
+5,397
+337% +$847K 0.04% 398
2025
Q4 		$208K Buy
+1,603
New +$230K 0.01% 645
2025
Q2 		– Sell
-3,773
Closed -$629K – 913
2025
Q1 		$629K Buy
+3,773
New +$655K 0.03% 495

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

SummitTX Capital's MASI Position: Q1 2026 in Review

SummitTX Capital increased its Masimo (MASI) stake by 337% in Q1 2026, buying an estimated $847K and bringing the position to 7,000 shares worth $1.25M. The position accounts for 0.04% of the portfolio, ranked #398.

SummitTX Capital first reported a position in MASI in Q1 2025 and has held it in 3 quarters since. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • SummitTX Capital held 7,000 shares of Masimo worth $1.25M as of Q1 2026.
  • SummitTX Capital bought 5,397 Masimo shares in Q1 2026, an estimated $847K.
  • Masimo made up 0.04% of SummitTX Capital's portfolio in Q1 2026, its #398 holding.
  • SummitTX Capital first reported a position in Masimo in Q1 2025 and has held it in 3 quarters since.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on SummitTX Capital's 13F filing for Q1 2026, filed 15 May 2026.