Masimo Corporation
MX ˙ BMV ˙ US5747951003
SecurityMX:MASI / Masimo Corporation
InstitutionDeutsche Bank Ag\
Latest Disclosed Ownership89,387 shares
Latest Disclosed Value $ 15,899,266
Deutsche Bank Ag\ reports 1,227.00% increase in ownership of MASI / Masimo Corporation

On May 6, 2026 - Deutsche Bank Ag\ filed a 13F-HR form disclosing ownership of 89,387 shares of Masimo Corporation (MX:MASI) valued at $15,899,266 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 6,736 shares of Masimo Corporation. This represents a change in shares of 1,227.00% 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)
2026-05-06 2026-03-31 13F MASIMO COM 574795100 89,387 82,651 1,227.00 15,899 1,714.95 0.0010
2026-02-11 2025-12-31 13F MASIMO COM 574795100 6,736 131 1.98 876 -10.06 0.0003
2025-11-13 2025-09-30 13F MASIMO COM 574795100 6,605 293 4.64 975 -8.20 0.0003
2025-08-12 2025-06-30 13F MASIMO COM 574795100 6,312 3 0.05 1,062 0.95 0.0004
2025-05-09 2025-03-31 13F MASIMO COM 574795100 6,309 92 1.48 1,051 2.34 0.0004
2025-06-30 2024-12-31 13F/A-1 MASIMO COM 574795100 6,217 526 9.24 1,028 35.49 0.0004
2025-02-14 2024-12-31 13F MASIMO COM 574795100 6,217 526 1,028 0.0004
2025-06-26 2024-09-30 13F/A-1 MASIMO COM 574795100 5,691 -22 -0.39 759 5.42 0.0003
2024-11-13 2024-09-30 13F MASIMO COM 574795100 5,691 -22 759 0.0003
2025-06-12 2024-06-30 13F/A-1 MASIMO COM 574795100 5,713 183 3.31 719 -11.45 0.0003
2024-08-14 2024-06-30 13F MASIMO COM 574795100 5,713 183 719 0.0003
2025-06-02 2024-03-31 13F/A-1 MASIMO COM 574795100 5,530 -14,839 -72.85 812 -65.98 0.0004
2024-05-15 2024-03-31 13F MASIMO COM 574795100 5,530 -14,839 812 0.0004
2024-02-14 2023-12-31 13F MASIMO COM 574795100 20,369 -341 -1.65 2,387 31.52 0.0012
2023-11-24 2023-09-30 13F/A-1 MASIMO COM 574795100 20,710 -59,056 -74.04 1,816 -86.17 0.0012
2023-11-09 2023-09-30 13F MASIMO COM 574795100 20,710 -59,056 1,816 0.0010
2023-08-14 2023-06-30 13F MASIMO COM 574795100 79,766 -25,708 -24.37 13,125 -32.57 0.0070
2023-05-15 2023-03-31 13F MASIMO COM 574795100 105,474 -63,962 -37.75 19,464 -22.36 0.0108
2023-02-13 2022-12-31 13F MASIMO COM 574795100 169,436 29,535 21.11 25,068 26.94 0.0144
2022-11-14 2022-09-30 13F MASIMO COM 574795100 139,901 -350,438 -71.47 19,748 -69.18 0.0119
2022-08-11 2022-06-30 13F MASIMO COM 574795100 490,339 229,651 88.09 64,072 68.88 0.0358
2022-05-13 2022-03-31 13F MASIMO COM 574795100 260,688 146,166 127.63 37,940 13.16 0.0177
2022-02-16 2021-12-31 13F/A-1 MASIMO COM 574795100 114,522 -31,812 -21.74 33,529 -15.36 0.0151
2022-02-11 2021-12-31 13F MASIMO COM 574795100 114,522 -31,812 33,529 0.0017
2021-11-04 2021-09-30 13F MASIMO COM 574795100 146,334 565 0.39 39,614 12.09 0.0188
2021-08-11 2021-06-30 13F MASIMO COM 574795100 145,769 3,940 2.78 35,342 8.50 0.0172
2021-05-13 2021-03-31 13F MASIMO COM 574795100 141,829 -8,466 -5.63 32,573 -19.25 0.0175
2021-02-16 2020-12-31 13F MASIMO COM 574795100 150,295 37,807 33.61 40,336 51.90 0.0246
2020-11-12 2020-09-30 13F MASIMO COM 574795100 112,488 -15,458 -12.08 26,554 -8.97 0.0183
2020-08-13 2020-06-30 13F MASIMO COM 574795100 127,946 63,597 98.83 29,170 155.92 0.0222
2020-05-14 2020-03-31 13F MASIMO COM 574795100 64,349 -44,170 -40.70 11,398 -33.54 0.0102
2020-02-14 2019-12-31 13F MASIMO COM 574795100 108,519 -156,940 -59.12 17,150 -56.58 0.0112
2019-11-14 2019-09-30 13F MASIMO COM 574795100 265,459 -53,112 -16.67 39,496 -16.69 0.0274
2019-08-14 2019-06-30 13F MASIMO COM 574795100 318,571 -533,722 -62.62 47,408 -59.77 0.0278
2019-05-15 2019-03-31 13F MASIMO COM 574795100 852,293 562,713 194.32 117,853 279.07 0.0702
2019-04-01 2018-12-31 13F/A-1 MASIMO COM 574795100 289,580 -212,010 -42.27 31,090 -50.23 0.0220
2019-02-14 2018-12-31 13F MASIMO COM 574795100 289,580 64,964 31,090
2021-12-21 2018-09-30 13F/A-1 MASIMO COM 574795100 501,590 -249,226 -33.19 62,469 -14.80 0.0316
2018-11-14 2018-09-30 13F MASIMO COM 574795100 224,616 -526,200 27,971 0.0193
2020-04-21 2018-06-30 13F/A-1 MASIMO COM 574795100 750,816 307,903 69.52 73,317 88.22 0.0365
2018-08-14 2018-06-30 13F MASIMO COM 574795100 513,513 70,600 50,141 33,303.5272
2019-10-23 2018-03-31 13F/A-2 MASIMO COM 574795100 442,913 215,050 94.38 38,952 101.60 0.0186
2019-10-18 2018-03-31 13F/A-1 MASIMO COM 574795100 442,913 0 38,952 0.0186
2018-05-15 2018-03-31 13F MASIMO COM 574795100 373,920 146,057 32,884
2018-02-14 2017-12-31 13F MASIMO COM 574795100 227,863 33,843 17.44 19,321 15.07 0.0124
2017-11-14 2017-09-30 13F MASIMO COM 574795100 194,020 17,459 9.89 16,790 4.31 0.0115
2017-08-11 2017-06-30 13F MASIMO COM 574795100 176,561 33,876 23.74 16,096 20.98 0.0115
2017-05-15 2017-03-31 13F MASIMO COM 574795100 142,685 24,457 20.69 13,305 67.02 0.0098
2017-02-14 2016-12-31 13F MASIMO COM 574795100 118,228 29,426 33.14 7,966 50.84 0.0064
2016-11-14 2016-09-30 13F MASIMO COM 574795100 88,802 -252,652 -73.99 5,281 -70.55 0.0037
2016-08-15 2016-06-30 13F MASIMO COM 574795100 341,454 -4,984 -1.44 17,930 23.71 0.0127
2016-05-16 2016-03-31 13F MASIMO COM 574795100 346,438 -2,804 -0.80 14,494 -0.01 0.0109
2016-02-16 2015-12-31 13F MASIMO COM 574795100 349,242 12,338 3.66 14,495 11.59 0.0100
2015-11-17 2015-09-30 13F MASIMO COM 574795100 336,904 15,097 4.69 12,989 4.20 0.0100
2015-08-12 2015-06-30 13F MASIMO COM 574795100 321,807 -185,058 -36.51 12,465 -25.43 0.0080
2015-05-15 2015-03-31 13F MASIMO COM 574795100 506,865 207,611 69.38 16,715 112.09 0.0104
2015-02-13 2014-12-31 13F MASIMO COM 574795100 299,254 -86,431 -22.41 7,881 -3.96 0.0049
2014-11-14 2014-09-30 13F MASIMO COM 574795100 385,685 37,766 10.85 8,206 -0.05 0.0051
2014-08-15 2014-06-30 13F MASIMO COM 574795100 347,919 91,821 35.85 8,210 17.40 0.0056
2014-05-15 2014-03-31 13F MASIMO COM 574795100 256,098 -1,419 -0.55 6,993 -7.07 0.0050
2014-02-24 2013-12-31 13F/A-1 MASIMO COM 574795100 257,517 -204,852 -44.30 7,525 -38.90 0.0054
2014-02-18 2013-12-31 13F MASIMO COM 574795100 257,517 7,525
2013-11-18 2013-09-30 13F MASIMO COM 574795100 462,369 129,854 39.05 12,315 74.73 0.0091
2013-08-16 2013-06-30 13F MASIMO COM 057479510 332,515 332,515 7,048 0.0058
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.