NYSE: WMS ยท Construction Materials
Advanced Drainage Systems (WMS) fair value: undervalued or overvalued?
As of 21 Sep 2026, Faircurve's model values Advanced Drainage Systems (WMS) at $123.13 a share. The stock last closed at $126.88, which puts the model's fair value 3.0% below the price. On the model's bands that reads as Fairly valued.
Revalued . Price is the close of 21 Sep 2026. Advanced Drainage Systems, Inc.
What price range does the model give WMS?
The calibrated range for WMS over 63 trading days is $115.74 to $150.92. It sits around the last close, and its width comes from the volatility that WMS's own options imply (38% a year), calibrated weekly against realised prices (n = 2,982 past valuations, refreshed 19 Sep 2026). Ranges built this way held the price 60% of the time at this horizon. The fair value is the model's opinion and rides beside the range. It is not the centre of it.
The model's own simulated range, from the 20th to the 80th percentile of its runs, is $98.65 to $151.34. In 47% of the simulations the fair value came out above the price the model ran on.
How does WMS score on business quality?
Advanced Drainage Systems's overall quality score is 55 out of 100. Each factor below is a score against comparable companies, not a percentile of the metric beside it.
| Factor | Score (0 to 100) | Headline measure | Peer median |
|---|---|---|---|
| ProfitabilityReturn on invested capital against the peer group, with a bonus for an improving trend. | 50 | 16.3%ROIC | 18.7% |
| Earnings qualityHow much of reported profit is cash: free cash flow to net income, and the accrual ratio (the share of earnings that is not cash). | 75 | 1.22xFCF / net income | 1.07x |
| Growth qualityTrailing revenue growth, forward growth from consensus, and the direction of analyst estimate revisions. | 77 | 5.0%Revenue growth, trailing | -1.5% |
| Capital disciplineReinvestment efficiency (capital spending per unit of revenue) and net buybacks. | 25 | 3.4%Net buybacks / market value | 5.4% |
| Balance sheetNet debt to EBITDA and interest coverage. | 53 | 1.73xNet debt / EBITDA | 1.73x |
| StabilityDownside volatility of the EBITDA margin over the last five years. | 17 | 3.4 ptsEBITDA margin downside volatility, 5y | 2.2 pts |
How does WMS compare with similar companies?
The companies in construction materials closest to Advanced Drainage Systems in market value, each on the same model and the same date.
| Company | Last close | Model fair value | Gap | Model verdict |
|---|---|---|---|---|
| OC Owens Corning | $121.59 | $131.49 | +8.1% | Fairly valued |
| SPXC SPX Technologies, Inc. | $181.19 | $182.64 | +0.8% | Low model confidence |
| CSL Carlisle Companies Incorporated | $317.85 | $324.10 | +2.0% | Fairly valued |
| ACA Arcosa, Inc. | $146.22 | $146.22 | 0.0% | Low model confidence |
| SSD Simpson Manufacturing Co., Inc. | $173.80 | $173.35 | -0.3% | Fairly valued |
| MAS Masco Corporation | $67.74 | $72.26 | +6.7% | Fairly valued |
| AWI Armstrong World Industries, Inc. | $161.88 | $165.01 | +1.9% | Fairly valued |
| BLDR Builders FirstSource, Inc. | $58.52 | $58.10 | -0.7% | Low model confidence |
All construction materials stocks ranked by gap to fair value
When does WMS report earnings, and how has the stock reacted?
Advanced Drainage Systems's next earnings report is scheduled for 5 Nov 2026. Companies can move their dates.
Options prices on 21 Sep 2026 imply a move of about 7.7% in either direction through the nearest expiry, about 24 days out. That is the size the market is pricing, not a direction. WMS's 30 day implied volatility works out to about 10.9% over one month.
How WMS moved around its last 8 earnings reports
Each move runs from the last close before the report to the first close after it, so it covers companies that report before the open and after the close. The median size across these 8 reports, ignoring direction, was 7.3%.
| Report date | Two session move |
|---|---|
| 6 Aug 2026 | -3.8% |
| 21 May 2026 | -2.8% |
| 5 Feb 2026 | +9.4% |
| 6 Nov 2025 | +9.9% |
| 7 Aug 2025 | +15.4% |
| 15 May 2025 | +5.2% |
| 6 Feb 2025 | +3.8% |
| 8 Nov 2024 | -14.6% |
Advanced Drainage Systems at a glance
Advanced Drainage Systems, Inc., established in Hilliard, Ohio in 1966, is a leading provider of innovative water management solutions.
- Market value
- $9.7B
- Sector
- Basic Materials
- Industry
- Construction Materials
- Revenue expected, next twelve months
- $3.6B
- Consensus revenue growth, next fiscal year
- +12.7%
- Analysts with estimates
- 6
- Beta to the US market
- 1.03
- First valued by Faircurve
- 11 Jul 2026
How the fair value is worked out: the model prices Advanced Drainage Systems on the value of the whole business, debt included, against the operating profit analysts expect next year (forward EV/EBITDA), runs 2,000 simulations across its inputs and takes the midpoint. The full method is documented here.
What changed in the latest valuation?
On 12 Sep 2026 the model's fair value for WMS was $123.65. As of 21 Sep 2026 it is $123.13, a change of -0.4%. The model revalues every stock it covers each week, and again after an earnings report.
Questions about Advanced Drainage Systems's valuation
Is Advanced Drainage Systems stock undervalued or overvalued?
On Faircurve's model, WMS reads as Fairly valued as of 21 Sep 2026. The model's fair value is $123.13 a share against a last close of $126.88, a gap of -3.0%.
What is WMS's fair value?
$123.13 a share as of 21 Sep 2026, the midpoint of 2,000 simulations. The model's own 20th to 80th percentile range is $98.65 to $151.34.
What price range does the model give WMS?
$115.74 to $150.92 over 63 trading days. Ranges built this way held the price 60% of the time across 2,982 past valuations, refreshed 19 Sep 2026.
When does Advanced Drainage Systems report earnings next?
The next report is scheduled for 5 Nov 2026. Companies can move their dates.
How much has WMS moved on past earnings reports?
Across its last 8 reports the median two session move was 7.3%, ignoring direction. The largest was +15.4% around the report of 7 Aug 2025.
How confident is the model in this valuation?
Model confidence for WMS is high. The grade looks at how complete the inputs are, how many comparable companies there are and how closely they agree, and how wide the range of outcomes is. It is not a probability that the fair value is right, or that the price reaches it.