Masimo Corporation
MX ˙ BMV ˙ US5747951003
SecurityMX:MASI / Masimo Corporation
InstitutionCardinal Capital Management
Latest Disclosed Ownership22,132 shares
Latest Disclosed Value $ 3,936,619
Cardinal Capital Management reports 3.12% increase in ownership of MASI / Masimo Corporation

On April 8, 2026 - Cardinal Capital Management filed a 13F-HR form disclosing ownership of 22,132 shares of Masimo Corporation (MX:MASI) valued at $3,936,619 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 21,462 shares of Masimo Corporation. This represents a change in shares of 3.12% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-08 2026-03-31 13F MASIMO COM 574795100 22,132 670 3.12 3,937 41.02 0.5075
2026-01-30 2025-12-31 13F MASIMO COMMON STOCK 574795100 21,462 282 1.33 2,791 -10.69 0.3697
2025-10-23 2025-09-30 13F MASIMO Common Stock 574795100 21,180 943 4.66 3,125 -8.20 0.4320
2025-07-15 2025-06-30 13F MASIMO Common Stock 574795100 20,237 369 1.86 3,404 2.84 0.4996
2025-04-18 2025-03-31 13F MASIMO Common Stock 574795100 19,868 1,148 6.13 3,310 6.98 0.5126
2025-01-31 2024-12-31 13F MASIMO Common Stock 574795100 18,720 203 1.10 3,094 25.36 0.4853
2024-10-16 2024-09-30 13F MASIMO Common Stock 574795100 18,517 3,077 19.93 2,469 26.95 0.3841
2024-07-12 2024-06-30 13F MASIMO Common Stock 574795100 15,440 676 4.58 1,945 -10.33 0.3275
2024-07-12 2024-03-31 13F/A-1 MASIMO Common Stock 574795100 14,764 2,962 25.10 2,168 56.76 0.3528
2024-04-15 2024-03-31 13F MASIMO Common Stock 574795100 14,764 2,962 2,168 0.3528
2024-07-12 2023-12-31 13F/A-1 MASIMO COM 574795100 11,802 255 2.21 1,383 36.66 0.2619
2024-01-29 2023-12-31 13F MASIMO COM 574795100 11,802 255 1,383 0.2619
2024-07-12 2023-09-30 13F/A-1 MASIMO Common Stock 574795100 11,547 490 4.43 1,012 -44.37 0.2061
2023-10-16 2023-09-30 13F MASIMO Common Stock 574795100 11,547 490 1,012 0.2061
2024-07-12 2023-06-30 13F/A-1 MASIMO Common Stock 574795100 11,057 240 2.22 1,819 -8.87 0.3664
2023-07-12 2023-06-30 13F MASIMO Common Stock 574795100 11,057 240 1,819 0.3664
2023-04-19 2023-03-31 13F MASIMO Common Stock 574795100 10,817 101 0.94 1,996 25.93 0.4142
2023-01-23 2022-12-31 13F Masimo COM 574795100 10,716 244 2.33 1,585 7.24 0.3375
2022-10-24 2022-09-30 13F Masimo Common Stock 574795100 10,472 402 3.99 1,478 12.31 0.3498
2022-08-04 2022-06-30 13F Masimo Common Stock 574795100 10,070 299 3.06 1,316 -7.45 0.3011
2022-04-21 2022-03-31 13F Masimo Common Stock 574795100 9,771 824 9.21 1,422 -45.73 0.2877
2022-01-18 2021-12-31 13F Masimo Common Stock 574795100 8,947 -16 -0.18 2,620 8.00 0.5189
2021-10-21 2021-09-30 13F Masimo Common Stock 574795100 8,963 21 0.23 2,426 11.90 0.5253
2021-07-14 2021-06-30 13F Masimo Common Stock 574795100 8,942 -4,601 -33.97 2,168 -30.29 0.4577
2021-04-19 2021-03-31 13F Masimo Common Stock 574795100 13,543 -51 -0.38 3,110 -14.75 0.6858
2021-02-01 2020-12-31 13F Masimo Common Stock 574795100 13,594 -45 -0.33 3,648 13.29 0.8637
2020-10-16 2020-09-30 13F Masimo Common Stock 574795100 13,639 84 0.62 3,220 4.21 0.8871
2020-07-16 2020-06-30 13F Masimo Common Stock 574795100 13,555 346 2.62 3,090 32.11 0.8891
2020-04-20 2020-03-31 13F Masimo Common Stock 574795100 13,209 -1,836 -12.20 2,339 -1.64 0.7725
2020-01-21 2019-12-31 13F Masimo Common Stock 574795100 15,045 -330 -2.15 2,378 3.98 0.6175
2019-10-18 2019-09-30 13F Masimo Common Stock 574795100 15,375 71 0.46 2,287 0.40 0.6317
2019-07-08 2019-06-30 13F Masimo Common Stock 574795100 15,304 -46 -0.30 2,278 7.35 0.6464
2019-04-11 2019-03-31 13F Masimo Common Stock 574795100 15,350 -3 -0.02 2,122 28.76 0.6063
2019-01-15 2018-12-31 13F Masimo Common Stock 574795100 15,353 303 2.01 1,648 -12.06 0.5432
2018-10-25 2018-09-30 13F Masimo Common Stock 574795100 15,050 52 0.35 1,874 27.92 0.5303
2018-07-25 2018-06-30 13F Masimo Common Stock 574795100 14,998 -8,752 -36.85 1,465 -29.84 0.4435
2018-04-24 2018-03-31 13F Masimo Common Stock 574795100 23,750 -201 -0.84 2,088 2.81 0.6560
2018-02-01 2017-12-31 13F Masimo Common Stock 574795100 23,951 -1,730 -6.74 2,031 -8.60 0.6146
2017-10-24 2017-09-30 13F Masimo COM 574795100 25,681 678 2.71 2,222 -2.54 0.7015
2017-07-27 2017-06-30 13F Masimo Common Stock 574795100 25,003 1,522 6.48 2,280 4.11 0.7538
2017-04-25 2017-03-31 13F Masimo Common Stock 574795100 23,481 198 0.85 2,190 39.58 0.7925
2017-02-17 2016-12-31 13F/A-1 Masimo Common Stock 574795100 23,283 1,736 8.06 1,569 22.39 0.5975
2017-01-23 2016-12-31 13F Masimo Common Stock 574795100 23,283 1,569
2016-11-02 2016-09-30 13F Masimo Common Stock 574795100 21,547 1,185 5.82 1,282 19.93 0.5028
2016-07-27 2016-06-30 13F Masimo Common Stock 574795100 20,362 833 4.27 1,069 30.84 0.4346
2016-04-21 2016-03-31 13F Masimo Common Stock 574795100 19,529 1,244 6.80 817 7.64 0.3431
2016-01-29 2015-12-31 13F Masimo Common Stock 574795100 18,285 514 2.89 759 10.80 0.3389
2015-10-23 2015-09-30 13F Masimo Common Stock 574795100 17,771 1,595 9.86 685 9.25 0.3203
2015-08-03 2015-06-30 13F Masimo Common Stock 574795100 16,176 2,899 21.83 627 43.15 0.2739
2015-04-24 2015-03-31 13F Masimo Common Stock 574795100 13,277 13,277 438 0.1850
2015-01-28 2014-12-31 13F Masimo Common Stock 574795100 0 -10,105 -100.00 0 -100.00
2014-10-24 2014-09-30 13F Masimo Common Stock 574795100 10,105 755 8.07 215 -2.71 0.1023
2014-07-22 2014-06-30 13F Masimo Common Stock 574795100 9,350 1,706 22.32 221 5.74 0.1096
2014-04-25 2014-03-31 13F Masimo Common Stock 574795100 7,644 645 9.22 209 1.95 0.1075
2014-01-24 2013-12-31 13F Masimo Common Stock 574795100 6,999 6,999 205 0.1051
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.