Masimo Corporation
MX ˙ BMV ˙ US5747951003
SecurityMX:MASI / Masimo Corporation
InstitutionEnvestnet Asset Management Inc
Latest Disclosed Ownership12,596 shares
Latest Disclosed Value $ 2,240,431
Envestnet Asset Management Inc reports 25.80% decrease in ownership of MASI / Masimo Corporation

On May 4, 2026 - Envestnet Asset Management Inc filed a 13F-HR form disclosing ownership of 12,596 shares of Masimo Corporation (MX:MASI) valued at $2,240,431 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 16,975 shares of Masimo Corporation. This represents a change in shares of -25.80% 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)
2026-05-04 2026-03-31 13F MASIMO COM 574795100 12,596 -4,379 -25.80 2,240 1.50 0.0006
2026-02-10 2025-12-31 13F MASIMO COM 574795100 16,975 -4,167 -19.71 2,208 -29.24 0.0007
2025-11-05 2025-09-30 13F MASIMO COM 574795100 21,142 -6,092 -22.37 3,120 -31.91 0.0009
2025-08-01 2025-06-30 13F MASIMO COM 574795100 27,234 -4,554 -14.33 4,581 -13.48 0.0013
2025-04-29 2025-03-31 13F MASIMO COM 574795100 31,788 681 2.19 5,296 3.00 0.0017
2025-02-13 2024-12-31 13F MASIMO COM 574795100 31,107 4,579 17.26 5,142 45.39 0.0017
2024-11-07 2024-09-30 13F MASIMO COM 574795100 26,528 4,225 18.94 3,537 25.93 0.0011
2024-08-08 2024-06-30 13F MASIMO COM 574795100 22,303 -111 -0.50 2,809 -14.68 0.0010
2024-05-13 2024-03-31 13F MASIMO COM 574795100 22,414 2,285 11.35 3,291 39.51 0.0012
2024-02-13 2023-12-31 13F MASIMO COM 574795100 20,129 -1,784 -8.14 2,359 22.80 0.0010
2023-11-13 2023-09-30 13F MASIMO COM 574795100 21,913 5,695 35.12 1,921 -28.00 0.0009
2023-08-04 2023-06-30 13F MASIMO COM 574795100 16,218 -1,593 -8.94 2,669 -18.81 0.0012
2023-05-11 2023-03-31 13F MASIMO COM 574795100 17,811 2,595 17.05 3,287 45.98 0.0016
2023-02-07 2022-12-31 13F MASIMO COM 574795100 15,216 -1,550 -9.24 2,251 -4.90 0.0012
2022-11-10 2022-09-30 13F MASIMO COM 574795100 16,766 153 0.92 2,367 9.03 0.0014
2022-08-03 2022-06-30 13F MASIMO COM 574795100 16,613 -13,640 -45.09 2,171 -50.69 0.0012
2022-05-04 2022-03-31 13F MASIMO COM 574795100 30,253 -7,312 -19.46 4,403 -59.97 0.0022
2022-02-04 2021-12-31 13F MASIMO COM 574795100 37,565 2,487 7.09 10,998 15.82 0.0054
2021-10-07 2021-09-30 13F MASIMO COM 574795100 35,078 2,205 6.71 9,496 19.15 0.0052
2021-08-04 2021-06-30 13F MASIMO COM 574795100 32,873 6,599 25.12 7,970 32.08 0.0045
2021-05-04 2021-03-31 13F MASIMO COM 574795100 26,274 -4,292 -14.04 6,034 -26.44 0.0039
2021-02-02 2020-12-31 13F MASIMO COM 574795100 30,566 985 3.33 8,203 17.47 0.0062
2020-10-09 2020-09-30 13F MASIMO COM 574795100 29,581 -2,139 -6.74 6,983 -3.44 0.0062
2020-07-08 2020-06-30 13F MASIMO COM 574795100 31,720 -3,123 -8.96 7,232 17.19 0.0071
2020-04-23 2020-03-31 13F MASIMO COM 574795100 34,843 -761 -2.14 6,171 9.65 0.0073
2020-02-11 2019-12-31 13F MASIMO COM 574795100 35,604 5,437 18.02 5,628 25.37 0.0059
2019-10-17 2019-09-30 13F MASIMO COM 574795100 30,167 2,462 8.89 4,489 8.88 0.0049
2019-08-02 2019-06-30 13F MASIMO COM 574795100 27,705 -5,194 -15.79 4,123 -9.36 0.0052
2019-05-10 2019-03-31 13F MASIMO COM 574795100 32,899 4,394 15.41 4,549 48.61 0.0062
2019-02-12 2018-12-31 13F MASIMO COM 574795100 28,505 28,505 3,061 0.0047
2018-11-14 2018-09-30 13F MASIMO COM 574795100 0 -5,873 -100.00 0 -100.00
2018-08-10 2018-06-30 13F MASIMO COM 574795100 5,873 -747 -11.28 573 -3.05 0.0013
2018-05-09 2018-03-31 13F MASIMO COM 574795100 6,620 -2,467 -27.15 591 -23.35 0.0017
2018-02-20 2017-12-31 13F MASIMO COM 574795100 9,087 198 2.23 771 0.39 0.0017
2017-11-13 2017-09-30 13F MASIMO COM 574795100 8,889 -501 -5.34 768 -10.39 0.0018
2017-08-14 2017-06-30 13F MASIMO COM 574795100 9,390 99 1.07 857 -0.92 0.0024
2017-05-09 2017-03-31 13F MASIMO COM 574795100 9,291 -1,531 -14.15 865 18.49 0.0028
2017-02-14 2016-12-31 13F MASIMO COM 574795100 10,822 -397 -3.54 730 9.45 0.0026
2016-11-14 2016-09-30 13F MASIMO COM 574795100 11,219 4,785 74.37 667 97.34 0.0026
2016-08-15 2016-06-30 13F MASIMO COM 574795100 6,434 4,097 175.31 338 244.90 0.0013
2016-05-16 2016-03-31 13F MASIMO COM 574795100 2,337 -2,509 -51.77 98 -51.24 0.0004
2016-02-16 2015-12-31 13F MASIMO COM 574795100 4,846 -88 -1.78 201 5.79 0.0009
2015-11-13 2015-09-30 13F MASIMO COM 574795100 4,934 -663 -11.85 190 -12.44 0.0009
2015-08-13 2015-06-30 13F MASIMO COM 574795100 5,597 5,597 0.00 217 0.0010
2015-05-15 2015-03-31 13F Masimo COM 574795100 0 -1,863 -100.00 0 -100.00
2015-02-12 2014-12-31 13F Masimo COM 574795100 1,863 1,863 49 0.0005
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.