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 Griffon Corporation, 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 Griffon Corporation, Simpson Manufacturing Co. and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Griffon Corporation, Simpson Manufacturing Co. and Inc.

Griffon Corporation, through its subsidiaries, provides home and building, and consumer and professional products in the United States, Europe, Canada, Australia, and internationally. The Home and Building Products segment manufactures and markets residential and sectional commercial garage doors, rolling steel service doors, fire doors, shutters, steel security grilles, and room dividers. This segment also sells garage door openers. Its Consumer and Professional Products segment manufactures and markets long-handled engineered tools, including shovels, spades, scoops, rakes, hoes, cultivators, weeders, post hole diggers, scrapers, edgers, and forks; wheelbarrows and lawn carts; snow tools comprising pushers, roof rakes, sled sleigh shovels, and ice scrapers; and pruning products, such as pruners, loppers, shears, and other tools. This segment also offers striking tools, including axes, picks, mattocks, mauls, wood splitters, sledgehammers, pry bars, and repair handles; hand tools comprising hammers, screwdrivers, pliers, adjustable wrenches, handsaws, tape measures, levels, clamps, trowels, and other hand tools; indoor and outdoor planters and lawn accessories; and garden hoses and hose reels. In addition, this segment provides home organization products, including wire and wood shelving, containers, storage cabinets, and other closet and home organization accessories; residential, industrial, and commercial fans; and cleaning products, such as brooms, brushes, squeegees, and other cleaning products. It serves independent professional installing dealers and home center retail chains; and industrial distributors, homebuilders, and e-commerce platforms, as well as mass market, specialty, and hardware retailers. The company was formerly known as Instrument Systems Corporation and changed its name to Griffon Corporation in 1995. Griffon Corporation was incorporated in 1959 and is headquartered in New York, New York.

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 Griffon Corporation, Simpson Manufacturing Co., Inc. Stock News

As of September 2, 2026, Griffon Corporation had a $4.3 billion market capitalization, compared to the Building Products median of $5.0 million. Griffon Corporation’s stock is up 32.7% in 2026, down 1.5% in the previous five trading days and up 25.96% in the past year.

Currently, Griffon Corporation’s price-earnings ratio is 19.9. Griffon Corporation’s trailing 12-month revenue is $2.6 billion with a 7.0% net profit margin. Year-over-year quarterly sales growth most recently was 7.0%. Analysts expect adjusted earnings to reach $5.398 per share for the current fiscal year. Griffon Corporation currently has a 0.9% 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 Griffon Corporation, 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 Griffon Corporation, Simpson Manufacturing Co. and Inc.’s stock grades to see how they measure up against one another.

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Griffon Corporation, Simpson Manufacturing Co. and Inc. Stock Value Grades

Company	Ticker	Value
Griffon Corporation	GFF	C
Simpson Manufacturing Co., Inc.	SSD	C

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.

Griffon Corporation has a Value Score of 44, which is Average. Simpson Manufacturing Co., Inc. has a Value Score of 44, which is Average.

The Value Stock Winner: No Clear Winner

Neither Griffon Corporation, Simpson Manufacturing Co. or Inc. has a high enough value grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolio. It’s important to look at a wide range of financial metrics in order to determine if Griffon Corporation, Simpson Manufacturing Co. or Inc. is the better investment when it comes to value.

Griffon Corporation, Simpson Manufacturing Co. and Inc. Growth Grades

Company	Ticker	Growth
Griffon Corporation	GFF	C
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.

Griffon Corporation has a Growth Score of 43, which is Average. Simpson Manufacturing Co., Inc. has a Growth Score of 89, which is Very Strong.

The Growth Grade Winner: Simpson Manufacturing Co., Inc.

As you can clearly see from the Growth Grade breakdown above, Simpson Manufacturing Co., Inc. has a more attractive growth grade than Griffon Corporation. For investors who focus solely on how a company is growing relative to other companies in the same industry, Simpson Manufacturing Co., 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.

Griffon Corporation, Simpson Manufacturing Co. and Inc.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Griffon Corporation	GFF	B
Simpson Manufacturing Co., Inc.	SSD	B

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

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Griffon Corporation has a Earnings Estimate Score of 70, which is Positive. Simpson Manufacturing Co., Inc. has a Earnings Estimate Score of 68, which is Positive.

The Earnings Estimate Revisions Grade Winner: It’s a Tie!

Looking at the Earnings Estimate Revisions Grade breakdown above, both Griffon Corporation, Simpson Manufacturing Co. and Inc. have a grade of B. For those focusing solely on a company’s estimate revisions, other financial metrics will need to be evaluated to determine whether Griffon Corporation, Simpson Manufacturing Co. or Inc. is a better fit.

Other Griffon Corporation, Simpson Manufacturing Co. and Inc. Grades

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

Momentum grades help 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.

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 Griffon Corporation, 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, Griffon Corporation, Simpson Manufacturing Co. or Inc. Stock?

Overall, Griffon Corporation stock has a Value Score of 44, Growth Score of 43 and Estimate Revisions Score of 70.

Simpson Manufacturing Co., Inc. stock has a Value Score of 44, Growth Score of 89 and Estimate Revisions Score of 68.

Comparing Griffon Corporation, 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.