IMRF
MASI

Illinois Municipal Retirement Fund’s Masimo MASI Stock Holding History

Illinois Municipal Retirement Fund’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 		$1.36M Sell
7,626
-3,733
-33% -$586K 0.02% 734
2025
Q4 		$1.48M Sell
11,359
-4,206
-27% -$602K 0.02% 698
2025
Q3 		$2.3M Buy
15,565
+3,145
+25% +$476K 0.03% 553
2025
Q2 		$2.09M Buy
12,420
+3,111
+33% +$497K 0.03% 572
2025
Q1 		$1.55M Hold
9,309
– – 0.02% 688
2024
Q4 		$1.54M Hold
9,309
– – 0.02% 731
2024
Q3 		$1.24M Hold
9,309
– – 0.02% 828
2024
Q2 		$1.17M Hold
9,309
– – 0.02% 811
2024
Q1 		$1.37M Hold
9,309
– – 0.02% 743
2023
Q4 		$1.09M Hold
9,309
– – 0.02% 840
2023
Q3 		$816K Hold
9,309
– – 0.02% 938
2023
Q2 		$1.53M Hold
9,309
– – 0.03% 505
2023
Q1 		$1.72M Hold
9,309
– – 0.04% 465
2022
Q4 		$1.38M Sell
9,309
-3,123
-25% -$430K 0.03% 512
2022
Q3 		$1.75M Hold
12,432
– – 0.04% 420
2022
Q2 		$1.62M Sell
12,432
-13,902
-53% -$1.86M 0.04% 449
2022
Q1 		$3.83M Sell
26,334
-12,676
-32% -$2.43M 0.11% 248
2021
Q4 		$11.4M Buy
39,010
+15,727
+68% +$4.48M 0.32% 87
2021
Q3 		$6.3M Hold
23,283
– – 0.23% 138
2021
Q2 		$5.64M Sell
23,283
-3,444
-13% -$786K 0.23% 135
2021
Q1 		$6.14M Buy
26,727
+782
+3% +$196K 0.27% 110
2020
Q4 		$6.96M Buy
25,945
+18,401
+244% +$4.59M 0.33% 75
2020
Q3 		$1.78M Buy
7,544
+2,987
+66% +$670K 0.24% 98
2020
Q2 		$1.04M Buy
+4,557
New +$1M 0.43% 94

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

Illinois Municipal Retirement Fund's MASI Position: Q1 2026 in Review

Illinois Municipal Retirement Fund reduced its Masimo (MASI) stake by 33% in Q1 2026, selling an estimated $586K and leaving 7,626 shares worth $1.36M. The position accounts for 0.02% of the portfolio, ranked #734.

Illinois Municipal Retirement Fund first reported a position in MASI in Q2 2020 and has held it in 24 quarters since. The position peaked at $11.4M in Q4 2021. 445 funds tracked by Wall St. Rank hold MASI as of Q1 2026.

  • Illinois Municipal Retirement Fund held 7,626 shares of Masimo worth $1.36M as of Q1 2026.
  • Illinois Municipal Retirement Fund sold 3,733 Masimo shares in Q1 2026, an estimated $586K.
  • Masimo made up 0.02% of Illinois Municipal Retirement Fund's portfolio in Q1 2026, its #734 holding.
  • Illinois Municipal Retirement Fund first reported a position in Masimo in Q2 2020 and has held it in 24 quarters since.
  • Illinois Municipal Retirement Fund's Masimo position peaked at $11.4M in Q4 2021.
  • 445 funds tracked by Wall St. Rank held Masimo as of Q1 2026.

Based on Illinois Municipal Retirement Fund's 13F filing for Q1 2026, filed 5 May 2026.