마시모 코퍼레이션
MX ˙ BMV ˙ US5747951003
SecurityMX:MASI / Masimo Corporation
InstitutionComerica Bank
Latest Disclosed Ownership12,233 shares
Latest Disclosed Value $ 1,590,990
Comerica Bank reports 94.76% decrease in ownership of MASI / Masimo Corporation

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 12,233 shares of Masimo Corporation (MX:MASI) valued at $1,590,990 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 233,427 shares of Masimo Corporation. This represents a change in shares of -94.76% 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)
2026-01-29 2025-12-31 13F MASIMO COM 574795100 12,233 -221,194 -94.76 1,591 -95.38 0.0063
2025-11-14 2025-09-30 13F MASIMO COM 574795100 233,427 43,605 22.97 34,442 7.86 0.1296
2025-08-14 2025-06-30 13F MASIMO COM 574795100 189,822 51,967 37.70 31,932 39.04 0.1239
2025-05-14 2025-03-31 13F MASIMO COM 574795100 137,855 -3,523 -2.49 22,967 -1.72 0.0965
2025-02-14 2024-12-31 13F/A-1 MASIMO COM 574795100 141,378 -103,703 -42.31 23,370 -28.48 0.0942
2025-02-14 2024-12-31 13F MASIMO COM 574795100 141,378 -103,703 23,370 0.0783
2024-11-14 2024-09-30 13F MASIMO COM 574795100 245,081 54,396 28.53 32,677 36.07 0.1292
2024-08-15 2024-06-30 13F MASIMO COMMON 574795100 190,685 87,990 85.68 24,015 59.24 0.0999
2024-05-16 2024-03-31 13F MASIMO COMMON 574795100 102,695 -6,564 -6.01 15,081 17.76 0.0650
2024-02-14 2023-12-31 13F MASIMO COMMON 574795100 109,259 12,845 13.32 12,806 51.50 0.0590
2023-11-21 2023-09-30 13F MASIMO COMMON 574795100 96,414 96,414 8,454 0.0440
2023-08-22 2023-06-30 13F MASIMO COM 574795100 0 -21,340 -100.00 0 -100.00
2023-01-26 2022-12-31 13F MASIMO COM 574795100 21,340 -358 -1.65 3 -99.90 0.0269
2022-10-28 2022-09-30 13F MASIMO COM 574795100 21,698 -1,733 -7.40 2,951 -5.69 0.0249
2022-08-02 2022-06-30 13F MASIMO COM 574795100 23,431 -318 -1.34 3,129 -3.28 0.0257
2022-04-27 2022-03-31 13F MASIMO COM 574795100 23,749 786 3.42 3,235 -33.86 0.0235
2022-02-18 2021-12-31 13F MASIMO COM 574795100 22,963 -308 -1.32 4,891 -25.83 0.0360
2021-11-22 2021-09-30 13F MASIMO COM 574795100 23,271 -4,740 -16.92 6,594 -15.34 0.0397
2021-08-26 2021-06-30 13F MASIMO COM 574795100 28,011 -3,262 -10.43 7,789 1.13 0.0465
2021-04-28 2021-03-31 13F MASIMO COM 574795100 31,273 -1,482 -4.52 7,702 -10.83 0.0459
2021-01-28 2020-12-31 13F MASIMO COM 574795100 32,755 -527 -1.58 8,637 6.01 0.0548
2020-10-30 2020-09-30 13F MASIMO COM 574795100 33,282 -107 -0.32 8,147 1.53 0.0591
2020-07-31 2020-06-30 13F MASIMO COM 574795100 33,389 2,673 8.70 8,024 25.55 0.0618
2020-05-01 2020-03-31 13F MASIMO COM 574795100 30,716 2,183 7.65 6,391 30.03 0.0586
2020-02-07 2019-12-31 13F MASIMO COM 574795100 28,533 203 0.72 4,915 21.72 0.0372
2019-10-31 2019-09-30 13F MASIMO COM 574795100 28,330 14 0.05 4,038 -6.68 0.0319
2019-08-02 2019-06-30 13F MASIMO COM 574795100 28,316 -3,212 -10.19 4,327 1.55 0.0347
2019-05-02 2019-03-31 13F MASIMO COM 574795100 31,528 5 0.02 4,261 10.85 0.0345
2019-02-06 2018-12-31 13F MASIMO COM 574795100 31,523 1,048 3.44 3,844 8.96 0.0327
2018-11-01 2018-09-30 13F MASIMO COM 574795100 30,475 -5,650 -15.64 3,528 -3.34 0.0285
2018-08-01 2018-06-30 13F MASIMO COM 574795100 36,125 -941 -2.54 3,650 10.37 0.0255
2018-05-01 2018-03-31 13F MASIMO COM 574795100 37,066 -63 -0.17 3,307 -0.54 0.0236
2018-02-02 2017-12-31 13F MASIMO COM 574795100 37,129 75 0.20 3,325 3.33 0.0222
2017-11-06 2017-09-30 13F MASIMO COM 574795100 37,054 1,708 4.83 3,218 -7.45 0.0233
2017-08-03 2017-06-30 13F MASIMO COM 574795100 35,346 395 1.13 3,477 -2.33 0.0260
2017-05-03 2017-03-31 13F MASIMO COM 574795100 34,951 -12,459 -26.28 3,560 4.98 0.0270
2017-02-08 2016-12-31 13F MASIMO COM 574795100 47,410 3,356 7.62 3,391 34.30 0.0268
2016-08-11 2016-06-30 13F MASIMO COM 574795100 44,054 -1,221 -2.70 2,525 29.95 0.0218
2016-05-11 2016-03-31 13F MASIMO COM 574795100 45,275 -623 -1.36 1,943 17.12 0.0173
2016-02-05 2015-12-31 13F MASIMO COM 574795100 45,898 -501 -1.08 1,659 -7.27 0.0163
2015-11-12 2015-09-30 13F MASIMO COM 574795100 46,399 -49,675 -51.70 1,789 -51.93 0.0169
2015-08-13 2015-06-30 13F MASIMO COM 574795100 96,074 48,585 102.31 3,722 137.68 0.0160
2015-05-15 2015-03-31 13F MASIMO COM 574795100 47,489 -45,019 -48.66 1,566 -35.71 0.0133
2015-02-13 2014-12-31 13F MASIMO COM 574795100 92,508 43,291 87.96 2,436 132.66 0.0105
2014-10-21 2014-09-30 13F MASIMO COM 574795100 49,217 -2,100 -4.09 1,047 -13.54 0.0092
2014-08-12 2014-06-30 13F MASIMO COM 574795100 51,317 11,176 27.84 1,211 10.49 0.0103
2014-05-15 2014-03-31 13F MASIMO COM 574795100 40,141 539 1.36 1,096 -5.35 0.0084
2014-02-11 2013-12-31 13F MASIMO COM 574795100 39,602 -341 -0.85 1,158 8.83 0.0090
2013-11-12 2013-09-30 13F MASIMO COM 574795100 39,943 851 2.18 1,064 28.35 0.0074
2013-08-13 2013-06-30 13F/A-1 MASIMO COM 574795100 39,092 39,092 829 0.0068
2013-08-08 2013-06-30 13F MASIMO COM 574795100 195,460 4,145
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.