The Bull Rankings scorecard — our quality-growth score is 73.3 / 100, built from three pillars scored 0–100: Quality 81, Growth 80, Value 61 (valuation is judged against sector peers). At today's price, our reverse-DCF read says the market is implicitly betting on free-cash-flow growth of about 12% a year next year, fading to 3% a year by year ten — a gauge of how much optimism is already in the stock.
The thesis
WMS is a quality‑growth play that the market has priced for somewhat faster growth than it has delivered. Our model gives it a 73.3/100, with Quality 81 and Growth 80 eclipsing Value 61. The high quality score reflects a ROE of 25.2 % and a profit margin of 14 % that have stayed steady while the company has kept its debt at a modest debt‑to‑equity of 0.97. The growth pillar is buoyed by 10.4 % revenue growth YoY and a PE of 21.7.
The single sharpest argument for owning WMS today is that the reverse‑DCF implied free‑cash‑flow growth of about 12 % in year 1 is somewhat higher than the 10.4 % revenue growth the company has delivered. If the market is already pricing in a 12 % FCF acceleration that will taper to 3 % by year 10, it is betting on a future where the company expands its margins or captures new market share. The current price of $127.21 on a PE of 21.7 already assumes that acceleration. Yet the company’s free‑cash‑flow of $550 m and strong dividend raise suggest it can sustain a higher growth rate for longer than the model assumes.
What the business actually is
Advanced Drainage Systems designs, manufactures, and markets thermoplastic corrugated pipes and related water‑management products across the United States, Canada, and internationally. The company operates through two segments: Stormwater and Wastewater. In Stormwater, it sells single, double, and triple wall corrugated polypropylene and polyethylene pipes, plastic leachfield chambers, EZflow synthetic aggregate bundles, and allied storm‑retention products. Wastewater covers mechanical aeration wastewater systems, septic tanks and accessories, and combined treatment and dispersal systems such as AeroFin, advanced enviro‑septic, and advanced treatment leachfield. The Stormwater segment has been the engine of recent growth, riding a wave of infrastructure spending and stricter storm‑water regulations.
Why it can (or can't) keep compounding
The moat is product differentiation and a robust distribution network that keeps competitors at bay. The company’s profit margin of 14 % outpaces many peers in the building‑products space, and its ROE of 25.2 % indicates efficient capital deployment. The beta of 1.28 shows the stock moves with the market but not excessively, suggesting a stable business cycle.
The strongest model signal, Buying back stock, indicates management believes the shares are undervalued and that the company has excess cash to return to shareholders. Coupled with a Raising its dividend signal, this points to a durable cash‑flow stream that can fund both buybacks and future growth. Competitors cannot replicate the proprietary pipe designs or the integrated system solutions (e.g., AeroFin) without significant R&D investment and regulatory approvals, creating a high switching cost for customers.
The valuation question
At $127.21, the stock trades at a PE of 21.7 and a PEG of 1.18. The reverse‑DCF suggests the market is pricing in 12 % FCF growth in year 1, decaying to 3 % by year 10. Compared to the 10.4 % revenue growth the company has shown, the implied FCF growth is optimistic but not wildly so. If the company can maintain or improve its 14 % margin while expanding its Stormwater portfolio, it could sustain the higher FCF growth for a longer period.
However, the Value pillar of 61 signals that, relative to peers, the stock is only modestly cheap. If the company’s growth stalls or margins compress, the price will adjust sharply because the implied 12 % growth is no longer justified.
The bear case
The most compelling skeptic’s argument is the Value pillar, the softest of the three. At 61, the stock is only modestly cheap versus peers. If the company’s debt‑to‑equity of 0.97 rises or if free‑cash‑flow dips below $550 m, the reverse‑DCF implied growth will collapse. A single quarter of revenue growth below 10 % would confirm that the market’s 12 % FCF acceleration is over‑optimistic.
What would change our mind
- Revenue growth falling below 10 % YoY for two consecutive quarters would erode the growth pillar and justify a lower PE.
- Margin compression below 12 % would signal cost pressures that could bite the 14 % profit margin.
- Debt‑to‑equity rising above 1.5 would raise leverage concerns and weaken the quality score.
If any of these thresholds are breached, the Quality‑Growth narrative would shift toward a more cautious stance, and the stock’s current price would appear over‑valued.