Composite decking and railing products manufacturer Trex Company (NYSE: TREX) reported Q3 2026 results exceeding the market’s revenue expectations, with revenue rising 26% year on year to $359.5 million. In addition, next quarter’s revenue guidance ($180 million at the midpoint) was surprisingly strong, coming in 6.6% above analysts’ consensus estimates. Its non-GAAP profit of $0.55 per share was 15.4% above analysts’ consensus estimates.

For more on Trex, read our free full research report.

“We delivered an exceptional third quarter as we successfully executed our enhanced distribution strategy, began the ramp-up of our Arkansas manufacturing facility, generated record third quarter revenue, and again increased our full-year outlook,” said Adam Zambanini, president and CEO.

Revenue growth

Reviewing a company’s long-term revenue performance reveals insights into its quality. Any business can have short-term success, but a top-tier one grows for years. Over the last five years, Trex grew its revenue at a sluggish 2.7% compounded annual growth rate, falling short of our standards.

Long-term growth matters most, but within industrials, a half-decade historical view may miss cycles, industry trends or a company capitalizing on catalysts such as a new contract win or a successful product line. Trex’s annualized revenue growth of 4.3% over the last two years is above its five-year trend, a positive sign.

This quarter, Trex reported strong year-on-year revenue growth of 26%, and its $359.5 million of revenue topped Wall Street’s consensus estimates by 14.3%. Management is guiding for an 11.7% year-on-year increase in revenue next quarter.

Looking further ahead, sell-side analysts expect revenue to grow 2.2% over the next 12 months, according to S&P, a slight deceleration versus the last two years. This underwhelming projection indicates its products and services will see some demand headwinds.

Operating margin

Operating margin is an important measure of profitability as it shows the portion of revenue left after accounting for all core expenses, from the cost of goods sold to advertising and wages. It’s also useful for comparing profitability across companies with different levels of debt and tax rates because it excludes interest and taxes.

Trex has operated efficiently over the last five years. It demonstrated high profitability for an industrials business, with an average operating margin of 24%. This result is unsurprising given its favorable gross margin baseline.

Trex’s operating margin decreased by 6.6 percentage points over the last five years. This raises questions about the company’s expense base because its revenue growth should have given it leverage on its fixed costs, resulting in better economies of scale and profitability.

This quarter, Trex generated an operating margin of 20.2%, down 4.5 percentage points year on year. Trex’s operating margin decreased more than its gross margin, suggesting it was less efficient because expenses such as marketing, R&D and administrative overhead increased.

Earnings per share

Revenue trends explain a company’s historical growth, but the long-term change in earnings per share (EPS) points to the profitability of that growth. For example, a company could inflate its revenue through excessive spending on advertising and promotions.

Trex’s EPS declined by 1.8% annually over the last five years while its revenue grew by 2.7%. This indicates the company became less profitable on a per-share basis as it expanded due to non-fundamental factors such as interest expenses and taxes.

A closer look at Trex’s earnings helps explain the drivers of its performance. As mentioned earlier, Trex’s operating margin declined by 6.6 percentage points over the last five years. This was the most relevant factor (aside from the revenue impact) behind its lower earnings; interest expenses and taxes can also affect EPS but don’t tell us as much about a company’s fundamentals.

As with revenue, examining EPS over a more recent period can provide insight into an emerging theme or development for the business.

Trex’s two-year annual EPS declines of 9.3% show it has continued to underperform. These were poor results.

In Q3, Trex reported adjusted EPS of $0.55, up from $0.51 in the same quarter last year. This comfortably beat analysts’ consensus estimates, a positive result for shareholders. Over the next 12 months, Wall Street expects Trex’s full-year EPS to grow 11.4% from $1.80 to $2.00, according to S&P.

Key takeaways from Trex’s Q3 results

Trex delivered sizable beats on both EBITDA and revenue, with each coming in well above analysts’ consensus estimates. Those results made this a strong quarter with clear positives. Shares surged 5.1% to $52.53 immediately after the results.

Trex had a solid quarter, but one earnings result doesn’t necessarily make the stock a buy. That decision should take into account its valuation, business quality and latest quarterly results. For more on Trex, read our full research report here (it’s free).