Masimo Corporation
MX ˙ BMV ˙ US5747951003
SecurityMX:MASI / Masimo Corporation
InstitutionUtah Retirement Systems
Latest Disclosed Ownership2,382 shares
Latest Disclosed Value $ 423,686
Utah Retirement Systems ownership in MASI / Masimo Corporation

On May 15, 2026 - Utah Retirement Systems filed a 13F-HR form disclosing ownership of 2,382 shares of Masimo Corporation (MX:MASI) valued at $423,686 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,382 shares of Masimo Corporation. This represents a change in shares of 0.00% 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)
2026-05-15 2026-03-31 13F MASIMO COM 574795100 2,382 0 0.00 424 36.89 0.0043
2026-02-17 2025-12-31 13F MASIMO COM 574795100 2,382 0 0.00 310 -11.97 0.0029
2025-11-14 2025-09-30 13F MASIMO COM 574795100 2,382 0 0.00 351 -12.25 0.0034
2025-08-14 2025-06-30 13F MASIMO COM 574795100 2,382 82 3.57 401 4.44 0.0042
2025-05-15 2025-03-31 13F MASIMO COM 574795100 2,300 0 0.00 383 0.79 0.0044
2025-02-14 2024-12-31 13F MASIMO COM 574795100 2,300 0 0.00 380 24.18 0.0042
2024-11-14 2024-09-30 13F MASIMO COM 574795100 2,300 -4,821 -67.70 307 -65.85 0.0035
2024-08-14 2024-06-30 13F MASIMO COM 574795100 7,121 -400 -5.32 897 -18.84 0.0106
2024-05-15 2024-03-31 13F MASIMO COM 574795100 7,521 0 0.00 1,104 25.31 0.0129
2024-02-14 2023-12-31 13F MASIMO COM 574795100 7,521 100 1.35 882 35.54 0.0112
2023-11-14 2023-09-30 13F MASIMO COM 574795100 7,421 -800 -9.73 651 -51.92 0.0093
2023-08-14 2023-06-30 13F MASIMO COM 574795100 8,221 -200 -2.38 1,353 -13.00 0.0188
2023-05-16 2023-03-31 13F MASIMO COM 574795100 8,421 100 1.20 1,554 26.24 0.0225
2023-02-15 2022-12-31 13F MASIMO COM 574795100 8,321 -200 -2.35 1,231 2.33 0.0195
2022-11-14 2022-09-30 13F MASIMO COM 574795100 8,521 -400 -4.48 1,203 3.17 0.0201
2022-08-16 2022-06-30 13F MASIMO COM 574795100 8,921 0 0.00 1,166 -10.17 0.0187
2022-05-13 2022-03-31 13F MASIMO COM 574795100 8,921 -100 -1.11 1,298 -50.85 0.0173
2022-02-14 2021-12-31 13F MASIMO COM 574795100 9,021 0 0.00 2,641 8.15 0.0326
2021-11-16 2021-09-30 13F MASIMO COM 574795100 9,021 -500 -5.25 2,442 5.81 0.0330
2021-08-16 2021-06-30 13F MASIMO COM 574795100 9,521 200 2.15 2,308 7.80 0.0297
2021-05-17 2021-03-31 13F MASIMO COM 574795100 9,321 -400 -4.11 2,141 -17.94 0.0298
2021-02-16 2020-12-31 13F MASIMO COM 574795100 9,721 400 4.29 2,609 18.54 0.0370
2020-11-16 2020-09-30 13F MASIMO COM 574795100 9,321 200 2.19 2,201 5.82 0.0365
2020-08-13 2020-06-30 13F/A-1 MASIMO COM 574795100 9,121 100 1.11 2,080 30.16 0.0382
2020-08-13 2020-06-30 13F MASIMO COM 574795100 9,121 100 2,080 38,176.4154
2020-05-15 2020-03-31 13F MASIMO COM 574795100 9,021 0 0.00 1,598 12.06 0.0346
2020-02-12 2019-12-31 13F MASIMO COM 574795100 9,021 100 1.12 1,426 7.38 0.0251
2019-11-14 2019-09-30 13F MASIMO COM 574795100 8,921 100 1.13 1,328 1.14 0.0253
2019-08-14 2019-06-30 13F MASIMO COM 574795100 8,821 178 2.06 1,313 9.87 0.0251
2019-05-15 2019-03-31 13F MASIMO COM 574795100 8,643 143 1.68 1,195 30.89 0.0237
2019-02-08 2018-12-31 13F MASIMO COM 574795100 8,500 100 1.19 913 -12.80 0.0206
2018-11-13 2018-09-30 13F MASIMO COM 574795100 8,400 0 0.00 1,047 27.53 0.0203
2018-08-10 2018-06-30 13F MASIMO COM 574795100 8,400 8,400 821 0.0170
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.