CI Investments Inc
MASI

CI Investments Inc’s Masimo MASI Stock Holding History

CI Investments Inc’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
2025
Q4 		– Sell
-419
Closed -$62K – 1010
2025
Q3 		$62K Sell
419
-282
-40% -$42.7K ﹤0.01% 983
2025
Q2 		$118K Sell
701
-30
-4% -$4.79K ﹤0.01% 867
2025
Q1 		$122K Buy
731
+649
+791% +$113K ﹤0.01% 853
2024
Q4 		$14K Sell
82
-1
-1% -$158 ﹤0.01% 1223
2024
Q3 		$11K Sell
83
-1,057
-93% -$123K ﹤0.01% 1195
2024
Q2 		$144K Sell
1,140
-100
-8% -$13.2K ﹤0.01% 716
2024
Q1 		$182K Buy
1,240
+479
+63% +$61.8K ﹤0.01% 722
2023
Q4 		$89K Sell
761
-133
-15% -$12.4K ﹤0.01% 861
2023
Q3 		$78K Sell
894
-116
-11% -$13.5K ﹤0.01% 873
2023
Q2 		$166K Buy
1,010
+579
+134% +$101K ﹤0.01% 676
2023
Q1 		$80K Buy
431
+358
+490% +$60.4K ﹤0.01% 787
2022
Q4 		$11K Sell
73
-4
-5% -$550 ﹤0.01% 1121
2022
Q3 		$11K Sell
77
-2
-3% -$292 ﹤0.01% 1120
2022
Q2 		$10K Sell
79
-183
-70% -$24.5K ﹤0.01% 1039
2022
Q1 		$38K Sell
262
-14
-5% -$2.69K ﹤0.01% 999
2021
Q4 		$81K Buy
276
+52
+23% +$14.8K ﹤0.01% 946
2021
Q3 		$61K Buy
+224
New +$60.7K ﹤0.01% 948
2020
Q3 		– Sell
-1,204
Closed -$274K – 953
2020
Q2 		$274K Buy
+1,204
New +$264K ﹤0.01% 498

Other funds holding MASI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
PCM
Politan Capital Management New York $985M AUM 3.12% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
NCMU
NAYA Capital Management (UK) London, United Kingdom $1.18B AUM 13.14% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $23.8B AUM 49.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return

CI Investments Inc's MASI Position: Q4 2025 in Review

CI Investments Inc sold out of Masimo (MASI) in Q4 2025, closing a stake of 419 shares — an estimated $62K sold.

CI Investments Inc first reported a position in MASI in Q2 2020 and held it in 18 quarters. The position peaked at $274K in Q2 2020. 390 funds tracked by Wall St. Rank hold MASI as of Q4 2025.

  • CI Investments Inc reported no remaining Masimo position as of Q4 2025 after selling out during the quarter.
  • CI Investments Inc sold 419 Masimo shares in Q4 2025, an estimated $62K.
  • CI Investments Inc first reported a position in Masimo in Q2 2020 and held it in 18 quarters.
  • CI Investments Inc's Masimo position peaked at $274K in Q2 2020.
  • 390 funds tracked by Wall St. Rank held Masimo as of Q4 2025.

Based on CI Investments Inc's 13F filing for Q4 2025, filed 12 Feb 2026.