Publicly Traded Security and Protection Companies
Comprehensive directory and market analysis of the 2026 security sector, featuring market cap leaders in physical protection, alarm monitoring, and specialized safety gear.
Navigating the landscape of Publicly Traded Security and Protection Companies in 2026 requires an understanding of the increasing convergence between physical hardware and AI-driven monitoring software. The industry currently commands a total market capitalization of over $45 billion, anchored by legacy hardware giants and high-growth detection tech firms. To benchmark performance across these diverse subsectors, many investors utilize a compare security stocks tool to analyze EBITDA margins and recurring revenue streams. Whether you are seeking defensive income from the business services sector or speculative growth in next-generation protection, this directory outlines the primary innovators listed on U.S. exchanges. Analyzing the all sectors framework helps investors differentiate between residential monitoring stability and industrial safety equipment growth.
Key Takeaways
Market leaders like the Allegion hardware segment maintain deep competitive moats through patent-protected locking mechanisms and institutional service contracts.
Companies with high recurring revenue, such as the ADT profile, provide stable cash flows as residential and commercial monitoring remain essential expenses.
The fastest-growing segment in 2026 is AI-driven detection tech, with innovators seeing revenue growth as much as 20% higher than traditional hardware peers.
High-value asset protection and armored transport, led by the Brinks transportation segment, remains vital for global financial logistics and cash management.
Top Publicly Traded Security and Protection Companies by Market Cap (2026)
The following table tracks the leading security entities ranked by market capitalization and dividend yield as of April 2026.
| Rank | Ticker | Company | Subsector | Market Cap | YTD % | P/E Ratio | Div Yield |
|---|---|---|---|---|---|---|---|
| 1 | ALLE | Allegion Plc | Hardware | $14.39B | +2.1% | 22.4x | 1.3% |
| 2 | ADT | ADT Inc. | Monitoring | $7.22B | +1.4% | 18.1x | 1.8% |
| 3 | MSA | MSA Safety Inc. | Protection Gear | $6.58B | +4.2% | 25.5x | 1.1% |
| 4 | BCO | Brink’s Company | Armored Trans. | $4.81B | +0.8% | 14.2x | 1.2% |
| 5 | NSSC | Napco Security | Alarm Systems | $1.57B | +0.3% | 19.8x | 0.0% |
| 6 | EVLV | Evolv Technologies | AI Detection | $1.41B | +3.5% | N/A | 0.0% |
| 7 | STGW | Stagwell Inc. | Marketing/Sec | $1.12B | -2.1% | 12.5x | 0.0% |
| 8 | SNT | Senstar Tech | Infrastructure | $124M | +1.1% | 10.8x | 0.0% |
Publicly Traded Security and Protection Companies — Complete Company List
List of Publicly Traded Security and Protection Companies Listed on Major U.S. Exchanges
Security and Protection Companies: Mid-Cap Stocks
- ADT Inc. (ADT) (IPO January 19, 2018; home/business security and automation)
- Allegion Plc. (ALLE) (Ireland; mechanical security hardware)
- Brink’s Company (The) (BCO) (Armored transportation, ATM replenishment and maintenance, long-distance transportation of valuables)
- MSA Safety Inc. (MSA) (Protection equipment)
Security and Protection Companies: Small-Cap Stocks
- Alarm.com Holdings, Inc. (ALRM) (IPO in June 2015: Home security software)
- OSI Systems, Inc. (OSIS) (Security and inspection systems)
Security and Protection Companies: Micro-Cap Stocks
- Ascent Capital Group, Inc. (ASCMA) (Security alarm monitoring services)
- Command Security Corporation (MOC) (Provides uniformed security officers and aviation security services)
- CompX International Inc. (CIX) (Mechanical and electrical cabinet locks; marine components)
- Digital Ally, Inc. (DGLY) (Digital video imaging products used by law enforcement and homeland security)
- Eastern Company (The) (EML) (Industrial hardware, security products and metal castings)
- Magal Security Systems Ltd. (MAGS) (Israel: computerized physical and cyber security products and systems)
- NAPCO Security Technologies, Inc. (NSSC) (Door, intrusion, fire alarm, video surveillance)
- SuperCom, Ltd. (SPCB) (Israel: Identification and security products to a number of markets)
- Universal Security Instruments, Inc. (UUU) (Smoke, fire and carbon monoxide alarms)
Risks & Considerations
Technological Displacement
Legacy hardware companies face intense competition from "smart home" tech disruptors and DIY security kits that can erode market share for professional installation services.
High Leverage in Services
Monitoring giants like ADT often carry high debt loads due to customer acquisition costs and infrastructure spending, making them sensitive to interest rate volatility.
Cyber-Physical Convergence
As physical locks and cameras move online, they become vulnerable to hacking. A major breach can cause catastrophic reputational damage to established security brands.
Cyclical Commercial Demand
Industrial protection and armored transport revenue are tied to business activity levels. A broader economic slowdown leads to immediate cuts in enterprise security budgets.