Masimo Corporation
US ˙ NasdaqGS ˙ US5747951003

SecurityMASI / Masimo Corporation
InstitutionHantz Financial Services, Inc.
Latest Disclosed Ownership1,762 shares
Latest Disclosed Value $ 313
Hantz Financial Services, Inc. reports 169.01% increase in ownership of MASI / Masimo Corporation

On May 1, 2026 - Hantz Financial Services, Inc. filed a 13F-HR form disclosing ownership of 1,762 shares of Masimo Corporation (US:MASI) valued at $313,407 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 655 shares of Masimo Corporation. The current value of the position is $315,010 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-01 2026-03-31 13F MASIMO USD 574795100 1,762 1,107 169.01 0 0.0048
2026-02-09 2025-12-31 13F MASIMO USD 574795100 655 75 12.93 0 0.0013
2025-11-05 2025-09-30 13F MASIMO USD 574795100 580 515 792.31 0 0.0013
2025-08-04 2025-06-30 13F MASIMO USD 574795100 65 59 983.33 0 0.0002
2025-05-12 2025-03-31 13F MASIMO USD 574795100 6 6 0 0.0000
2024-07-30 2024-06-30 13F MASIMO USD 574795100 0 -54 -100.00 0 0.0000
2024-08-06 2024-03-31 13F/A MASIMO USD 574795100 54 0 0.00 0 0.0002
2024-08-06 2023-12-31 13F/A MASIMO USD 574795100 54 0 0.00 0 0.0001
2024-08-06 2023-09-30 13F/A MASIMO USD 574795100 54 0 0.00 0 0.0001
2024-08-06 2023-06-30 13F/A MASIMO USD 574795100 54 15 38.46 0 0.0002
2024-08-06 2023-03-31 13F/A MASIMO USD 574795100 39 0 0.00 0 0.0002
2024-08-06 2022-12-31 13F/A MASIMO USD 574795100 39 0 0.00 0 0.0002
2024-08-06 2022-09-30 13F/A MASIMO USD 574795100 39 0 0.00 0 0.0002
2024-08-06 2022-06-30 13F/A MASIMO USD 574795100 39 0 0.00 0 0.0002
2024-08-06 2022-03-31 13F/A MASIMO USD 574795100 39 39 0 0.0002
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.