Sifting through countless of stocks in the Commercial Services & Supplies industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in CompX International Inc., Affiliated Managers Group or Inc. because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how CompX International Inc., Affiliated Managers Group and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About CompX International Inc., Affiliated Managers Group and Inc.

CompX International Inc. manufactures and sells security products and recreational marine components primarily in North America. It operates in two segments, Security Products and Marine Components. The Security Products segment manufactures mechanical and electrical cabinet locks, and other locking mechanisms used in various applications, including ignition systems, mailboxes, file cabinets, desk drawers, tool storage cabinets, high security medical cabinetry, integrated inventory and access control secured narcotics boxes, electrical circuit panels, storage compartments, gas station security, and vending and cash containment machines. This segment also offers disc and pin tumbler locks; and CompX eLock and StealthLock electronic locks for drug storage and other valuables. The Marine Components segment manufactures and distributes wake enhancement systems, stainless steel exhaust components, gauges, throttle controls, and related hardware and accessories; trim tabs, steering wheels and billet aluminum accessories; original equipment and aftermarket stainless steel exhaust headers, exhaust pipes, mufflers and other exhaust components; GPS speedometers and tachometers; mechanical and electronic controls and throttles; dash panels, LED indicators and wire harnesses; and grab handles, pin cleats and other accessories; fabricated metal products; and related hardware and accessories for ski/wakeboard boats and performance boats, as well as for the recreational marine and other industries. The company offers its products to recreational transportation, postal, office and institutional furniture, cabinetry, tool storage, healthcare, and other industries. It sells its products directly to original equipment manufacturers, as well as through distributors. The company was incorporated in 1993 and is based in Dallas, Texas. CompX International Inc. (NYSEAM:CIX) operates as a subsidiary of NLI Holdings, Inc.

Affiliated Managers Group, Inc., through its affiliates, operates as an investment management company providing investment management services to mutual funds, institutional clients,retails and high net worth individuals in the United States. It provides advisory or sub-advisory services to mutual funds. These funds are distributed to retail, high net worth and institutional clients directly and through intermediaries, including independent investment advisors, retirement plan sponsors, broker-dealers, major fund marketplaces, and bank trust departments. The company also offers investment products in various investment styles in the institutional distribution channel, including small, small/mid, mid, and large capitalization value and growth equity, and emerging markets. In addition, it offers quantitative, alternative, and fixed income products, and manages assets for foundations and endowments, defined benefit, and defined contribution plans for corporations and municipalities. Affiliated Managers Group provides investment management or customized investment counseling and fiduciary services. Affiliated Managers Group, Inc. was formed in 1993 and is based in West Palm Beach, Florida with additional offices in Prides Crossing, Massachusetts; Stamford, Connecticut; London, United Kingdom; Dubai, United Arab Emirates; Sydney, Australia; Hong Kong; Tokyo, Japan, Zurich, Switzerland and Delaware.

Latest Commercial Services & Supplies and CompX International Inc., Affiliated Managers Group, Inc. Stock News

As of September 17, 2026, CompX International Inc. had a $465.7 million market capitalization, compared to the Commercial Services & Supplies median of $756.0 million. CompX International Inc.’s stock is NA in 2026, NA in the previous five trading days and up 59.62% in the past year.

Currently, CompX International Inc.’s price-earnings ratio is 21.1. CompX International Inc.’s trailing 12-month revenue is $161.8 million with a 13.6% net profit margin. Year-over-year quarterly sales growth most recently was 7.9%. There are no analysts providing consensus earnings estimates for the current fiscal year. CompX International Inc. currently has a 5.8% dividend yield.

Currently, Affiliated Managers Group, Inc.’s price-earnings ratio is 12.2. Affiliated Managers Group, Inc.’s trailing 12-month revenue is $2.3 billion with a 37.7% net profit margin. Year-over-year quarterly sales growth most recently was 29.9%. Analysts expect adjusted earnings to reach $36.985 per share for the current fiscal year. Affiliated Managers Group, Inc. does not currently pay a dividend.

How We Compare CompX International Inc., Affiliated Managers Group and Inc. Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at CompX International Inc., Affiliated Managers Group and Inc.’s stock grades to see how they measure up against one another.

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CompX International Inc., Affiliated Managers Group and Inc. Stock Value Grades

Company	Ticker	Value
CompX International Inc.	CIX	C
Affiliated Managers Group, Inc.	AMG	B

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection.

Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

AAII’s A+ Investor Value Grade derives from a stock’s value score. The Value Score is the percentile rank of the average of the percentile ranks of the price-to-sales ratio, price-earnings ratio, enterprise-value-to-EBITDA (EV/EBITDA) ratio, shareholder yield, price-to-book-value ratio and price-to-free-cash-flow ratio. The score is variable, meaning it can consider all six ratios or, should any of the six ratios not be valid, the remaining ratios that are valid. To be assigned a Value Score, stocks must have a valid (non-null) ratio and corresponding ranking for at least two of the six valuation ratios.

Stocks with a Value Score from 81 to 100 are considered deep value, those with a score between 61 and 80 are a good value and so on.

CompX International Inc. has a Value Score of 52, which is Average. Affiliated Managers Group, Inc. has a Value Score of 69, which is Value.

The Value Stock Winner: Affiliated Managers Group, Inc.

As you can clearly see from the Value Grade breakdown above, Affiliated Managers Group, Inc. is considered to have better value than CompX International Inc.. For investors who focus solely on a company’s valuation, Affiliated Managers Group, Inc. could be a good stock to add to their portfolio. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

CompX International Inc., Affiliated Managers Group and Inc. Growth Grades

Company	Ticker	Growth
CompX International Inc.	CIX	B
Affiliated Managers Group, Inc.	AMG	D

The foundation of growth investing is seeking out stocks of companies exhibiting strong, consistent and prolonged growth that is expected to continue into the future.

In order to compute the growth score and assign it a letter grade, the percentile ranks for each of three components‐consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations‐must be determined. These three rank figures are added together, and the sum is ranked against the entire stock universe to arrive at a company’s Growth Score to create an equal distribution of grades.

The companies in the bottom 20% of the stock universe receive Growth Grades of F, considered to be very weak, while those in the top 20% receive A grades, which are considered very strong.

CompX International Inc. has a Growth Score of 77, which is Strong. Affiliated Managers Group, Inc. has a Growth Score of 25, which is Weak.

The Growth Grade Winner: CompX International Inc.

As you can clearly see from the Growth Grade breakdown above, CompX International Inc. has a more attractive growth grade than Affiliated Managers Group, Inc.. For investors who focus solely on how a company is growing relative to other companies in the same industry, CompX International Inc. could be a good stock to add to their portfolio. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

CompX International Inc., Affiliated Managers Group and Inc.’s Momentum Grades

Company	Ticker	Momentum
CompX International Inc.	CIX	A
Affiliated Managers Group, Inc.	AMG	B

Momentum grades help to uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

CompX International Inc. has a Momentum Score of 88, which is Very Strong. Affiliated Managers Group, Inc. has a Momentum Score of 71, which is Strong.

The Momentum Grade Winner: CompX International Inc.

As you can clearly see from the Momentum Grade breakdown above, CompX International Inc. is considered to have stronger momentum compared to Affiliated Managers Group, Inc.. For those specifically looking for companies that have stronger momentum compared to other companies in the same industry, CompX International Inc. could be a good stock to invest in. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other CompX International Inc., Affiliated Managers Group and Inc. Grades

In addition to Momentum, Growth and Value, A+ Investor also provides grades for Estimate Revisions and Quality.

Earnings estimate revisions scores take into account the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, surprises beget further surprises‐or at least continued sales growth (the exact opposite is generally true, too).

AAII’s A+ Investor Quality Grade comes from the ranking of key metrics. Specifically, the quality grade is the percentile rank of the composite of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and F-Score.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether CompX International Inc., Affiliated Managers Group and Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, CompX International Inc., Affiliated Managers Group or Inc. Stock?

Overall, CompX International Inc. stock has a Value Score of 52, Growth Score of 77 and Momentum Score of 88.

Affiliated Managers Group, Inc. stock has a Value Score of 69, Growth Score of 25 and Momentum Score of 71.

Comparing CompX International Inc., Affiliated Managers Group and Inc.’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.