馬西莫公司
MX ˙ BMV ˙ US5747951003
SecurityMX:MASI / Masimo Corporation
InstitutionAmalgamated Bank
Latest Disclosed Ownership21,832 shares
Latest Disclosed Value $ 3,883
Amalgamated Bank reports 1.30% increase in ownership of MASI / Masimo Corporation

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 21,832 shares of Masimo Corporation (MX:MASI) valued at $3,883 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 21,551 shares of Masimo Corporation. This represents a change in shares of 1.30% 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)
2026-05-08 2026-03-31 13F MASIMO COM 574795100 21,832 281 1.30 4 50.00 0.0297
2026-02-05 2025-12-31 13F MASIMO COM 574795100 21,551 -1,050 -4.65 3 -33.33 0.0202
2025-10-29 2025-09-30 13F MASIMO COM 574795100 22,601 858 3.95 3 0.00 0.0238
2025-08-04 2025-06-30 13F MASIMO COM 574795100 21,743 1,081 5.23 4 0.00 0.0282
2025-04-25 2025-03-31 13F MASIMO COM 574795100 20,662 -642 -3.01 3 0.00 0.0295
2025-02-04 2024-12-31 13F MASIMO COM 574795100 21,304 -9 -0.04 4 50.00 0.0289
2024-10-30 2024-09-30 13F MASIMO COM 574795100 21,313 -1,453 -6.38 3 0.00 0.0234
2024-08-12 2024-06-30 13F MASIMO COM 574795100 22,766 -1,840 -7.48 3 -33.33 0.0244
2024-04-23 2024-03-31 13F MASIMO COM 574795100 24,606 -5,784 -19.03 4 0.00 0.0309
2024-02-06 2023-12-31 13F MASIMO COM 574795100 30,390 -1,535 -4.81 4 50.00 0.0284
2023-11-08 2023-09-30 13F MASIMO COM 574795100 31,925 -2,777 -8.00 3 -60.00 0.0238
2023-08-11 2023-06-30 13F MASIMO COM 574795100 34,702 -248 -0.71 6 -16.67 0.0462
2023-05-02 2023-03-31 13F MASIMO COM 574795100 34,950 -1,827 -4.97 6 20.00 0.0550
2023-02-10 2022-12-31 13F MASIMO COM 574795100 36,777 447 1.23 5 -99.90 0.0485
2022-11-09 2022-09-30 13F MASIMO COM 574795100 36,330 -968 -2.60 5,128 5.21 0.0495
2022-08-15 2022-06-30 13F MASIMO COM 574795100 37,298 -795 -2.09 4,874 -12.09 0.0454
2022-08-25 2022-03-31 13F/A-1 MASIMO COM 574795100 38,093 -460 -1.19 5,544 -50.89 0.0431
2022-06-30 2022-03-31 13F MASIMO COM 574795100 38,093 -460 5,544 0.0440
2022-02-15 2021-12-31 13F/A-1 MASIMO COM 574795100 38,553 2,545 7.07 11,288 15.80 0.0833
2022-02-15 2021-12-31 13F MASIMO COM 574795100 38,553 2,545 11,288 0.0833
2021-10-29 2021-09-30 13F MASIMO COM 574795100 36,008 -3,751 -9.43 9,748 1.12 0.0823
2021-08-16 2021-06-30 13F MASIMO COM 574795100 39,759 36,914 1,297.50 9,640 1,376.26 0.0773
2021-05-13 2021-03-31 13F MASIMO COM 574795100 2,845 -143 -4.79 653 -18.58 0.0245
2021-02-12 2020-12-31 13F MASIMO COM 574795100 2,988 -2 -0.07 802 13.60 0.0304
2020-10-30 2020-09-30 13F MASIMO COM 574795100 2,990 -31 -1.03 706 2.47 0.0307
2020-08-10 2020-06-30 13F MASIMO COM 574795100 3,021 -9,814 -76.46 689 -69.69 0.0319
2020-05-13 2020-03-31 13F MASIMO COM 574795100 12,835 -371 -2.81 2,273 8.91 0.0556
2020-02-13 2019-12-31 13F MASIMO COM 574795100 13,206 822 6.64 2,087 13.24 0.0384
2019-11-13 2019-09-30 13F MASIMO COM 574795100 12,384 1,509 13.88 1,843 13.91 0.0388
2019-08-14 2019-06-30 13F MASIMO COM 574795100 10,875 33 0.30 1,618 7.94 0.0378
2019-05-15 2019-03-31 13F MASIMO COM 574795100 10,842 184 1.73 1,499 31.03 0.0363
2019-02-15 2018-12-31 13F MASIMO COM 574795100 10,658 3,989 59.81 1,144 37.67 0.0324
2018-11-14 2018-09-30 13F MASIMO COM 574795100 6,669 -4,351 -39.48 831 -22.77 0.0205
2018-07-18 2018-06-30 13F MASIMO COM 574795100 11,020 4,545 70.19 1,076 89.10 0.0263
2018-05-22 2018-03-31 13F MASIMO COM 574795100 6,475 -116 -1.76 569 1.79 0.0151
2018-02-13 2017-12-31 13F MASIMO COM 574795100 6,591 389 6.27 559 4.10 0.0151
2017-11-09 2017-09-30 13F MASIMO COM 574795100 6,202 -142 -2.24 537 -7.09 0.0167
2017-08-10 2017-06-30 13F MASIMO COM 574795100 6,344 676 11.93 578 9.26 0.0189
2017-05-12 2017-03-31 13F MASIMO COM 574795100 5,668 217 3.98 529 44.14 0.0263
2017-02-14 2016-12-31 13F MASIMO COM 574795100 5,451 703 14.81 367 30.14 0.0166
2016-11-15 2016-09-30 13F/A-1 MASIMO COM 574795100 4,748 -9 -0.19 282 2.17 0.0164
2016-08-16 2016-06-30 13F MASIMO COM 574795100 4,757 4,757 276 0.0160
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.