馬西莫公司
US ˙ NasdaqGS ˙ US5747951003

SecurityMASI / Masimo Corporation
InstitutionIng Groep Nv
Latest Disclosed Ownership21,700 shares
Latest Disclosed Value $ 3,859,779
Ing Groep Nv ownership in MASI / Masimo Corporation

On May 11, 2026 - Ing Groep Nv filed a 13F-HR form disclosing ownership of 21,700 shares of Masimo Corporation (US:MASI) valued at $3,859,779 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 0 shares of Masimo Corporation. The current value of the position is $3,882,130 USD.

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)
2026-05-11 2026-03-31 13F MASIMO COM 574795100 21,700 21,700 3,860 0.0236
2026-02-11 2025-12-31 13F MASIMO COM 574795100 0 -20,800 -100.00 0 -100.00
2025-11-06 2025-09-30 13F MASIMO COM 574795100 20,800 20,800 3,069 0.0166
2025-02-03 2024-12-31 13F MASIMO COM 574795100 0 -240,900 -100.00 0 -100.00
2024-11-06 2024-09-30 13F MASIMO COM 574795100 240,900 141,900 143.33 32,119 157.61 0.1867
2024-08-13 2024-06-30 13F MASIMO COM 574795100 99,000 99,000 12,468 0.0740
2023-05-09 2023-03-31 13F MASIMO COM 574795100 0 -20,200 -100.00 0 -100.00
2023-02-13 2022-12-31 13F MASIMO COM 574795100 20,200 -129,800 -86.53 2,989 -85.89 0.0300
2022-11-14 2022-09-30 13F MASIMO COM 574795100 150,000 150,000 21,174 0.3544
2019-08-12 2019-06-30 13F MASIMO COM 574795100 0 -7,496 -100.00 0 -100.00
2019-05-13 2019-03-31 13F MASIMO COM 574795100 7,496 22 0.29 1,037 29.30 0.0224
2019-02-13 2018-12-31 13F MASIMO COM 574795100 7,474 137 1.87 802 -12.25 0.0174
2018-11-06 2018-09-30 13F MASIMO COM 574795100 7,337 2,195 42.69 914 82.07 0.0158
2018-08-10 2018-06-30 13F MASIMO COM 574795100 5,142 -2,084 -28.84 502 -21.07 0.0096
2018-05-07 2018-03-31 13F MASIMO COM 574795100 7,226 53 0.74 636 4.61 0.0115
2018-02-06 2017-12-31 13F MASIMO COM 574795100 7,173 1,321 22.57 608 19.92 0.0101
2017-11-08 2017-09-30 13F MASIMO COM 574795100 5,852 315 5.69 507 0.40 0.0098
2017-07-25 2017-06-30 13F MASIMO COM 574795100 5,537 5,537 505 0.0097
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.