CompX International Inc. (CIX) Stock

CompX International Inc. (CIX) is a Materials stock trading at $31.39 (as of 2026-08-20), with a market capitalization of $387.31M and a trailing P/E of 17.6. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

CompX International Inc. manufactures security products and recreational marine components, primarily for customers in North America. Its Security Products segment makes mechanical and electrical locking mechanisms for uses such as vehicles, mailboxes, medical cabinetry, circuit panels, and storage security, while its Marine Components segment produces exhaust, gauges, controls, and related accessories for marine applications.

Understand CompX International Inc.: how it makes money

CompX International Inc. manufactures and sells security products (mechanical and electrical cabinet locks and other locking mechanisms) and recreational marine components, it makes money by selling these manufactured products primarily in North America.

Its profit model is tied to manufacturing and selling two product lines, security products and marine components, with operating performance reflecting how efficiently it converts sales into operating profit across those segments.

Business quality (Solid): The provided information includes operating margin and gross margin for the latest period, and identifies two reportable segments, but it does not include segment revenue or segment-specific operating metrics, limiting how precisely investors can connect operating results to each product line.

Valuation: At 16× earnings, CIX trades 32% below the Construction Materials average (24×). Note: one-time items can distort reported P/E.

Bull case

Two reportable product segments: The company operates in Security Products and Marine Components, which can help diversify product exposure within its manufacturing and sales model.
Positive operating profitability in the latest reported period: For the period ended 2026-03-31, operating margin is reported at 17.4% and gross margin at 32.7%.

Bear case

Limited visibility into what drives performance by segment: No segment revenue breakdown or segment operating metrics are provided here, so it is harder to assess which segment is contributing most to operating results.
Manufacturing and regional focus create exposure: Because the business manufactures products and sells primarily in North America, operational disruptions or demand changes affecting that market could impact results.

Valuation — source: SEC EDGAR (first-party)
Price	$31.39
Market Cap	$387.31M
P/E Ratio	17.6
EV / EBITDA	11.2
Price / Book	2.68
Price / Sales	2.39
FCF Yield	5.5%
DCF Value (model)	$29.56
DCF Upside vs Price	-5.8%

Profitability & Growth — source: SEC EDGAR
Revenue (TTM)	$158.28M
Net Margin	12.3%
Revenue Growth (YoY)	8.0%
EPS Growth (YoY)	34.1%
FCF Growth (YoY)	79.7%

Financial Health — source: SEC EDGAR
Altman Z-Score	16.11 (safe)

Valuation vs Sector & Industry
Stock P/E	17.6
Sector P/E (Materials)	25.1
Industry P/E (Construction Materials)	22.6
vs Sector	-29.8%
vs Industry	-22.0%

Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional Holder	DIMENSIONAL FUND ADVISORS LP ($4.19M)
Institutional Holders Tracked	10

Company
Sector	Materials
Industry	Construction Materials
CEO	Scott C. James
Employees	510
Country	US
IPO Date	1998-03-06

Related Companies (Business model: Industrials / Capital Goods (Heavy Machinery + Diversified Industrials); 8 closest by market cap; US-domiciled)

Data as of 2026-08-20.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.