AIM
MASI

Aigen Investment Management’s Masimo MASI Stock Holding History

Aigen Investment 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 		– Sell
-2,018
Closed -$262K – 681
2025
Q4 		$262K Buy
+2,018
New +$289K 0.06% 391
2025
Q2 		– Sell
-1,627
Closed -$271K – 957
2025
Q1 		$271K Buy
+1,627
New +$282K 0.04% 533
2023
Q4 		– Sell
-4,901
Closed -$430K – 953
2023
Q3 		$430K Buy
+4,901
New +$570K 0.08% 407
2022
Q4 		– Sell
-2,029
Closed -$286K – 672
2022
Q3 		$286K Buy
+2,029
New +$296K 0.04% 418
2022
Q2 		– Sell
-4,778
Closed -$695K – 650
2022
Q1 		$695K Buy
+4,778
New +$917K 0.12% 225
2021
Q3 		– Sell
-14,918
Closed -$3.62M – 586
2021
Q2 		$3.62M Buy
14,918
+8,858
+146% +$2.02M 0.63% 41
2021
Q1 		$1.39M Buy
+6,060
New +$1.52M 0.18% 133
2020
Q3 		– Sell
-1,449
Closed -$330K – 1002
2020
Q2 		$330K Buy
+1,449
New +$318K 0.04% 588

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

Aigen Investment Management's MASI Position: Q1 2026 in Review

Aigen Investment Management sold out of Masimo (MASI) in Q1 2026, closing a stake of 2,018 shares — an estimated $262K sold.

Aigen Investment Management first reported a position in MASI in Q2 2020 and held it in 8 quarters. The position peaked at $3.62M in Q2 2021. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Aigen Investment Management reported no remaining Masimo position as of Q1 2026 after selling out during the quarter.
  • Aigen Investment Management sold 2,018 Masimo shares in Q1 2026, an estimated $262K.
  • Aigen Investment Management first reported a position in Masimo in Q2 2020 and held it in 8 quarters.
  • Aigen Investment Management's Masimo position peaked at $3.62M in Q2 2021.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Aigen Investment Management's 13F filing for Q1 2026, filed 15 May 2026.