Sifting through countless of stocks in the Building Products 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 Armstrong World Industries, Inc., Simpson Manufacturing Co. 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 Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc.

Armstrong World Industries, Inc., together with its subsidiaries, engages in the design, manufacture, and sale of ceiling and wall solutions in the Americas. It operates through Mineral Fiber and Architectural Specialties segments. The company offers mineral fiber, fiberglass, metal, wood, felt, architectural resin and glass, wood fiber, and glass-reinforced-gypsum; and ceiling component products, such as ceiling perimeters and trims, as well as grid products that support drywall ceiling systems. It also designs, produces, and sources specialty ceilings, walls, and other interior and exterior architectural applications primarily for use in commercial settings; and manufactures ceiling suspension system (grid) products. It serves commercial and residential construction markets, as well as renovation of existing buildings sectors. The company sells its products to resale distributors, ceiling system contractors, wholesalers, and retailers comprising large home centers. Armstrong World Industries, Inc. was founded in 1860 and is headquartered in Lancaster, Pennsylvania.

Simpson Manufacturing Co., Inc., together with its subsidiaries, designs, engineers, manufactures, and sells structural solutions for wood, concrete, and steel connections in the North America, Europe, and the Asia Pacific. The company provides structural products for wood construction, such as connectors, fasteners, and lateral-force resisting systems; anchor, repair, protection and strengthening products including coatings, sealers, mortars, fiberglass and fiber-reinforced polymer systems and asphalt products. In addition, the company offers engineering and design services, as well as software solutions. It markets its products to the residential construction, industrial, commercial and infrastructure construction, remodeling and do-it-yourself markets. It offers engineering and design services. It serves its products to dealers, home centers, wood component manufacturers, OEM-relationships, distributors, and contractors industries. The company was founded in 1956 and is headquartered in Pleasanton, California.

Latest Building Products and Armstrong World Industries, Inc., Simpson Manufacturing Co., Inc. Stock News

As of September 2, 2026, Armstrong World Industries, Inc. had a $7.1 billion market capitalization, compared to the Building Products median of $5.0 million. Armstrong World Industries, Inc.’s stock is down 10.6% in 2026, down 2.7% in the previous five trading days and down 13.18% in the past year.

Currently, Armstrong World Industries, Inc.’s price-earnings ratio is 23.2. Armstrong World Industries, Inc.’s trailing 12-month revenue is $1.7 billion with a 18.6% net profit margin. Year-over-year quarterly sales growth most recently was 11.2%. Analysts expect adjusted earnings to reach $8.436 per share for the current fiscal year. Armstrong World Industries, Inc. currently has a 0.8% dividend yield.

As of September 2, 2026, Simpson Manufacturing Co., Inc. had a $7.3 billion market cap, putting it in the 73rd percentile of all stocks. Simpson Manufacturing Co., Inc.’s stock is up 10.3% in 2026, down 2.4% in the previous five trading days and down 5.63% in the past year.

Currently, Simpson Manufacturing Co., Inc.’s price-earnings ratio is 19.5. Simpson Manufacturing Co., Inc.’s trailing 12-month revenue is $2.4 billion with a 15.6% net profit margin. Year-over-year quarterly sales growth most recently was 6.3%. Analysts expect adjusted earnings to reach $9.058 per share for the current fiscal year. Simpson Manufacturing Co., Inc. currently has a 0.7% dividend yield.

How We Compare Armstrong World Industries, Inc., Simpson Manufacturing Co. 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 Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc.’s stock grades to see how they measure up against one another.

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Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc. Growth Grades

Company	Ticker	Growth
Armstrong World Industries, Inc.	AWI	A
Simpson Manufacturing Co., Inc.	SSD	A

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.

Armstrong World Industries, Inc. has a Growth Score of 89, which is Very Strong. Simpson Manufacturing Co., Inc. has a Growth Score of 89, which is Very Strong.

The Growth Grade Winner: It’s a Tie!

Looking at the Growth Grade breakdown above, both Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc. have a grade of A. For investors who focus solely on a company’s upward growth, further research should be conducted into both companies’ other financial metrics before deciding whether to invest.

Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc.’s Quality Grades

Company	Ticker	Quality
Armstrong World Industries, Inc.	AWI	A
Simpson Manufacturing Co., Inc.	SSD	A

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks 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 the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Armstrong World Industries, Inc. has a Quality Score of 90, which is Very Strong. Simpson Manufacturing Co., Inc. has a Quality Score of 97, which is Very Strong.

The Quality Grade Winner: It’s a Tie!

Looking at the Quality Grade breakdown above, both Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc. have a grade of A. For investors who focus solely on a company’s overall quality, you will need to conduct further research into both companies to see if they are a good fit for your portfolio. As a good rule of thumb, you should always analyze multiple factors based on a wide range of metrics before choosing a company to invest in.

Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc.’s Momentum Grades

Company	Ticker	Momentum
Armstrong World Industries, Inc.	AWI	D
Simpson Manufacturing Co., Inc.	SSD	D

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%.

Armstrong World Industries, Inc. has a Momentum Score of 38, which is Weak. Simpson Manufacturing Co., Inc. has a Momentum Score of 33, which is Weak.

The Momentum Stock Winner: No Clear Winner

Neither Armstrong World Industries, Inc., Simpson Manufacturing Co. or Inc. has a strong enough Momentum Grade to be considered a “winner.” Investors considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Armstrong World Industries, Inc., Simpson Manufacturing Co. or Inc. is the better investment when it comes to momentum.

Other Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc. Grades

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

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).

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.

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 Armstrong World Industries, Inc., Simpson Manufacturing Co. and Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Armstrong World Industries, Inc., Simpson Manufacturing Co. or Inc. Stock?

Overall, Armstrong World Industries, Inc. stock has a Growth Score of 89, Momentum Score of 38 and Quality Score of 90.

Simpson Manufacturing Co., Inc. stock has a Growth Score of 89, Momentum Score of 33 and Quality Score of 97.

Comparing Armstrong World Industries, Inc., Simpson Manufacturing Co. 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.