The Short Answer
Masimo stock (MASI) has a qualitative business verdict that is HALAL and passes the known filing-based financial ratios, but the overall screen remains incomplete. Masimo is a medical-technology company specializing in noninvasive patient monitoring.
Development and sale of medical-monitoring devices is generally permissible at the activity level. The April 4, 2026 filing reports debt/assets of 27.51%, liquidity/assets of 7.59% and receivables-plus-cash/assets of 22.69%; disclosed interest income is 0.22% of revenue and activity classification remains incomplete.
Current quantitative Sharia screen
Based on 10-Q figures for the period ended 2026-04-04; calculated 2026-07-15.
452 / 1,642.7
124.6 / 1,642.7
373.3 / 1,642.7
0.9 / 403.6
- Financial
- Pass
- Overall
- Incomplete
Debt/assets is 27.51%, liquidity/assets is 7.59%, receivables-plus-cash/assets is 22.69% and interest income is 0.22%; activity remains incomplete.
- Financial
- Pass
- Overall
- Incomplete
Known financial ratios pass; this is not an index-membership claim and activity remains incomplete.
- Financial
- Pass
- Overall
- Incomplete
Known debt, liquidity and income ratios pass; this is not an official classification.
- Financial
- Not calculated
- Overall
- Incomplete
A licensed historical market-cap series is not stored.
Business-activity disclosure
Masimo develops patient-monitoring and medical technologies, with a consumer-audio and health segment. Medical-device activity is generally permissible, but the filing does not provide a universal prohibited-revenue numerator for the mixed product portfolio.
Limitation: No universal prohibited-activity revenue numerator or scholar-specific purification percentage is disclosed.
Purification
Interest income is disclosed, but no scholar-approved purification percentage or universal activity allocation is calculated.
Inputs, assumptions and primary sources
- Amounts are USD millions from Masimo's April 4, 2026 Form 10-Q.
- Debt is current and non-current long-term debt of $6.3 million and $445.7 million; operating leases are excluded.
- Cash is $124.6 million. Accounts receivable uses $228.0 million trade receivables plus $10.7 million related-party receivables.
- Quarterly revenue is $403.6 million and disclosed interest income is $0.9 million (0.22% of revenue).
- Medical monitoring and consumer-audio activities remain qualitative; no universal prohibited-revenue numerator is disclosed.
This is a reproducible financial screen, not a fatwa. A failed total-assets screen can coexist with a pass under a market-cap methodology. ZakatInvest keeps the qualitative assessment separate so numerical thresholds do not erase material context.
Sharia Screening Methodology
Islamic scholars use several criteria to screen stocks:
- Business activity screen: Is the company's primary business halal?
- Debt ratio: Total debt / market cap must be under 33%
- Interest income: Interest income / total revenue must be under 5%
- Haram revenue: Revenue from haram sources must be under 5%
- Receivables ratio: Total receivables / total assets must be under 49–70% (varies by board)
Masimo's Business Activity
Masimo's products include:
- Pulse oximetry: Signature SET measure-through-motion sensors and monitors
- Advanced monitoring: Brain-function, hemoglobin, and other noninvasive parameters
- Connected care: Hospital-automation and patient-safety platforms
This is a permissible healthcare and medical-device business at the activity level. Masimo also operates a smaller consumer-audio and health segment.
Concerns to Be Aware Of
1. Leverage — The Primary Screen
The filing reports $452.0 million of current and non-current long-term debt. ZakatInvest does not substitute a debt-to-market-cap calculation because market capitalization is not part of this filing-based record; the named asset-based screens are shown separately.
2. Segment Restructuring
Masimo has been evaluating strategic alternatives for its non-healthcare consumer-audio segment. Corporate restructuring can affect leverage and the asset mix, so the financial screen should be re-verified following material transactions.
3. Interest Income
The filing reports $0.9 million of interest income, or 0.22% of revenue. ZakatInvest does not infer a purification amount or prescribe a fixed scholar-approved percentage.
Filing-Based Ratios (April 4, 2026)
Using Masimo's latest Form 10-Q (USD millions):
- Debt / total assets: 27.51%
- Cash + securities / total assets: 7.59%
- Receivables + cash / total assets: 22.69%
- Interest income / revenue: 0.22%
Methodology Interpretation
These are ZakatInvest calculations from the cited filing, not claims of current index membership or an official scholar ruling:
- FTSE-style: Known ratios and interest income pass; activity remains incomplete.
- MSCI-style: Known financial ratios pass; this is not an index-membership claim.
- Malaysia-style: Known debt, liquidity and income ratios pass; this is not an official classification.
Bottom Line
Masimo (MASI) has a generally permissible medical-technology business and passes the known filing-based ratios. Because a universal prohibited-revenue numerator is not disclosed, the overall result remains incomplete rather than a universal halal certification; consult the methodology you follow.
For Muslim investors seeking medical-device exposure, MASI sits alongside other halal-screened names like Inspire Medical (INSP) and Boston Scientific (BSX).
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