The Short Answer
L3Harris stock (LHX) is haram (impermissible) for Muslim investors at most major Islamic screening platforms. The company is a top-six US defense contractor formed by the 2019 merger of L3 Technologies and Harris Corporation, with a 2023 acquisition of Aerojet Rocketdyne (rocket motors and missile propulsion). The vast majority of revenue is defense-related, including direct manufacture of munition components, missile motors, and weapons-grade electronics. Major Islamic screening platforms classify defense primes as non-compliant on the business activity screen.
The qualitative business activity screen — not the financial ratios — is the disqualifying factor.
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)
L3Harris fails the qualitative business activity screen at every major Sharia advisory board that publishes industry exclusions, given the company's primary focus on defense electronics, missile propulsion, and weapons-related systems.
L3Harris's Business Activity
L3Harris operates four primary segments:
- Space & Airborne Systems: Mission solutions, intelligence and surveillance, electronic warfare, and space-based payloads
- Integrated Mission Systems: Maritime power and navigation, defense electronics, and communication systems
- Communication Systems: Tactical communications, public safety radios, and broadband communications for defense, federal, and first-responder customers
- Aerojet Rocketdyne: Solid rocket motors and missile propulsion used in tactical and strategic missile programs (acquired 2023)
The vast majority of revenue is defense-related. Even though Communication Systems and parts of Space & Airborne Systems include some commercial-adjacent products (e.g., public-safety radios, civilian avionics), they are a small minority of total revenue.
Why LHX Fails the Sharia Business Activity Screen
1. Aerojet Rocketdyne — Missile Propulsion
The 2023 acquisition of Aerojet Rocketdyne explicitly added missile propulsion (solid rocket motors used in tactical and strategic missile systems) to the L3Harris portfolio. This is a directly weapons-related product line.
2. Electronic Warfare and Weapons-System Electronics
Space & Airborne Systems includes electronic warfare and weapons-system electronics — components that are core to combat operations. These represent a substantial share of revenue.
3. Defense-Dominant Revenue Mix
Defense and federal contracts dominate the revenue mix. Major Islamic screening platforms classify defense primes as non-compliant on the business activity screen, regardless of customer.
4. Commercial Communications Cannot Carve Out
Some commercial aviation and public-safety communications products exist, but they are not material relative to the defense business and do not change the consolidated screening outcome.
Financial Ratios (2025)
For completeness — although the qualitative screen is the primary issue:
- Total Debt / Market Cap: ~25% (close to threshold; elevated post-Aerojet acquisition) ⚠️
- Interest Income / Revenue: ~0.4% ✅
- Haram Revenue: Majority from defense electronics and missile propulsion ❌
- Receivables Ratio: Within limits ✅
Financial ratios are largely irrelevant when the underlying business activity is impermissible. The post-Aerojet debt burden is also a separate concern that is being deleveraged over time.
Verdict from Major Screening Agencies
L3Harris stock is universally screened as non-compliant (haram) by:
- Zoya App — Non-Compliant ❌
- MSCI Islamic criteria — Does not meet criteria (defense exclusion) ❌
- AAOIFI-style Sharia advisory boards — Not Approved ❌
- Every major Sharia screening platform — Haram ❌
Bottom Line
L3Harris (LHX) is haram for Muslim investors. The company is a top-six defense prime with explicit missile propulsion, electronic warfare, and weapons-system electronics businesses. The qualitative business activity screen disqualifies the stock at every major Islamic screening platform.
Muslim investors who want exposure to communications, aerospace, or technology themes should consider commercial communications providers, civilian aerospace suppliers, or pure-play industrial technology companies without defense exposure.
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