Water management company Advanced Drainage Systems (NYSE: WMS) reported Q1 CY2026 results beating Wall Street’s revenue expectations, with sales up 9.9% year on year to $676.8 million. The company’s full-year revenue guidance of $3.45 billion at the midpoint came in 0.9% above analysts’ estimates. Its non-GAAP profit of $1.07 per share was 10.6% above analysts’ consensus estimates.

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Scott Barbour, President and Chief Executive Officer of ADS commented, "In the fourth quarter, net sales increased 10% overall, driven by strong growth in Allied products as well as the contribution from the NDS acquisition, which we closed in the quarter. We continue to focus on material conversion, new product introductions, customer programs and acquisitions to drive growth in the challenging demand environment. Adjusted EBITDA also increased 6%, driven by favorable volume and price/cost. "

Company Overview

Originally started as a farm water drainage company, Advanced Drainage Systems (NYSE: WMS) provides clean water management solutions to communities across America.

Revenue Growth

A company’s long-term sales performance is one signal of its overall quality. Any business can put up a good quarter or two, but the best consistently grow over the long haul. Over the last five years, Advanced Drainage grew its sales at a decent 9% compounded annual growth rate. Its growth was slightly above the average industrials company and shows its offerings resonate with customers.

We at StockStory place the most emphasis on long-term growth, 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. Advanced Drainage’s recent performance shows its demand has slowed as its annualized revenue growth of 3% over the last two years was below its five-year trend. We’re wary when companies in the sector see decelerations in revenue growth, as it could signal changing consumer tastes aided by low switching costs.

This quarter, Advanced Drainage reported year-on-year revenue growth of 9.9%, and its $676.8 million of revenue exceeded Wall Street’s estimates by 3.8%.

Looking ahead, sell-side analysts expect revenue to grow 12.1% over the next 12 months, an improvement versus the last two years. This projection is healthy and indicates its newer products and services will spur better top-line performance.

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Operating Margin

Operating margin is one of the best measures of profitability because it tells us how much money a company takes home after procuring and manufacturing its products, marketing and selling those products, and most importantly, keeping them relevant through research and development.

Advanced Drainage has been a well-oiled machine over the last five years. It demonstrated elite profitability for an industrials business, boasting an average operating margin of 21.4%. This result isn’t surprising as its high gross margin gives it a favorable starting point.

Analyzing the trend in its profitability, Advanced Drainage’s operating margin rose by 5.4 percentage points over the last five years, as its sales growth gave it immense operating leverage.

In Q1, Advanced Drainage generated an operating margin profit margin of 7.9%, down 11.1 percentage points year on year. Since Advanced Drainage’s operating margin decreased more than its gross margin, we can assume 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 sales through excessive spending on advertising and promotions.

Advanced Drainage’s EPS grew at 12.9% compounded annual growth rate over the last five years, higher than its 9% annualized revenue growth. This tells us the company became more profitable on a per-share basis as it expanded.

We can take a deeper look into Advanced Drainage’s earnings quality to better understand the drivers of its performance. As we mentioned earlier, Advanced Drainage’s operating margin declined this quarter but expanded by 5.4 percentage points over the last five years. This was the most relevant factor (aside from the revenue impact) behind its higher earnings; interest expenses and taxes can also affect EPS but don’t tell us as much about a company’s fundamentals.

Like with revenue, we analyze EPS over a more recent period because it can provide insight into an emerging theme or development for the business.

For Advanced Drainage, its two-year annual EPS declines of 1.8% mark a reversal from its (seemingly) healthy five-year trend. These shorter-term results weren’t ideal, but given it was successful in other measures of financial health, we’re hopeful Advanced Drainage can return to earnings growth in the future.

In Q1, Advanced Drainage reported adjusted EPS of $1.07, up from $1.03 in the same quarter last year. This print easily cleared analysts’ estimates, and shareholders should be content with the results. Over the next 12 months, Wall Street expects Advanced Drainage’s full-year EPS to grow 8.9% from $6.27 to $6.83.

Key Takeaways from Advanced Drainage’s Q1 Results

We were impressed by how significantly Advanced Drainage blew past analysts’ revenue expectations this quarter. We were also glad its EBITDA outperformed Wall Street’s estimates. On the other hand, its full-year EBITDA guidance missed and this seems to be weighing on shares. Zooming out, we think this was a mixed quarter. The stock traded down 1.9% to $134.25 immediately after reporting.

Big picture, is Advanced Drainage a buy here and now? What happened in the latest quarter matters, but not as much as longer-term business quality and valuation, when deciding whether to invest in this stock. We cover that in our actionable full research report which you can read here (it’s free).