Advanced Drainage Systems (MEX:WMS) Days Inventory: 101.20 (As of Mar. 2026) — 10% Above Median


MEX:WMS Advanced Drainage Systems Inc MEX:WMS
59 GF Score
Price MXN2,100.00
GF Value MXN2,006.35
Valuation Fairly Valued
! 3 Warning Signs
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What is Advanced Drainage Systems Days Inventory?

Advanced Drainage Systems MEX:WMS 59 Days Inventory is 101.20 as of Mar. 2026, which is 10% above its 10-year median of 91.94. GuruFocus rates MEX:WMS with a GF Score™ of 59/100 and a GF Value™ of MXN2,006.35 (Fairly Valued). The stock has 3 warning signs investors should review. Among 1,480 Construction companies, Advanced Drainage Systems ranks worse than 65.81% on this metric.

Days Inventory is also known as Days Sales of Inventory (DSI). Advanced Drainage Systems's Average Total Inventories for the three months ended in Mar. 2026 was MXN8,782 Mil. Advanced Drainage Systems's Cost of Goods Sold for the three months ended in Mar. 2026 was MXN7,918 Mil. Hence, Advanced Drainage Systems's Days Inventory for the three months ended in Mar. 2026 was 101.20.

The historical rank and industry rank for Advanced Drainage Systems's Days Inventory or its related term are showing as below:

MEX:WMS' s Days Inventory Range Over the Past 10 Years
Min: 73.54   Med: 91.94   Max: 99.99
Current: 90.73

During the past 13 years, Advanced Drainage Systems's highest Days Inventory was 99.99. The lowest was 73.54. And the median was 91.94.

MEX:WMS's Days Inventory is ranked worse than
65.81% of 1480 companies
in the Construction industry
Industry Median: 50.465 vs MEX:WMS: 90.73

Advanced Drainage Systems's Days Inventory declined from Mar. 2025 (114.08) to Mar. 2026 (101.20).

Inventory Turnover measures how fast the company turns over its inventory within a year. Advanced Drainage Systems's Inventory Turnover for the three months ended in Mar. 2026 was 0.90.

Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue. Advanced Drainage Systems's Inventory-to-Revenue for the three months ended in Mar. 2026 was 0.72.


Advanced Drainage Systems  (MEX:WMS) Days Inventory Explanation

Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:

1. Inventory Turnover measures how fast the company turns over its inventory within a year.

Advanced Drainage Systems's Inventory Turnover for the three months ended in Mar. 2026 is calculated as

2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.

Advanced Drainage Systems's Inventory to Revenue for the three months ended in Mar. 2026 is calculated as

Inventory-to-Revenue=Average Total Inventories / Revenue
=8781.7475 / 12203.828
=0.72

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.


Be Aware

A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.


Advanced Drainage Systems Days Inventory Related Terms


Advanced Drainage Systems Days Inventory Historical Data

* Premium members only.

The historical data trend for Advanced Drainage Systems's Days Inventory can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Advanced Drainage Systems Days Inventory Chart

Advanced Drainage Systems Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
Days Inventory
Get a 7-Day Free Trial Premium Member Only Premium Member Only 74.46 94.40 102.22 87.20 106.35

Advanced Drainage Systems Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Days Inventory Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 114.08 89.91 79.53 90.68 101.20

MEX:WMS vs SPXC, OC, AAON: Days Inventory Comparison

For the Building Products & Equipment subindustry, Advanced Drainage Systems's Days Inventory, along with its competitors' market caps and Days Inventory data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Advanced Drainage Systems Days Inventory vs Construction Industry

For the Construction industry and Industrials sector, Advanced Drainage Systems's Days Inventory distribution charts can be found below:

* The bar in red indicates where Advanced Drainage Systems's Days Inventory falls into.


MEX:WMS
59GF Score
Advanced Drainage Systems Inc MEX:WMS
Days Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
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Advanced Drainage Systems Days Inventory Calculation

Days Inventory indicates the number of days of goods in sales that a company has in the inventory.

Advanced Drainage Systems's Days Inventory for the fiscal year that ended in Mar. 2026 is calculated as

Days Inventory (A: Mar. 2026 )
=Average Total Inventories / Cost of Goods Sold*Days in Period
=( (Total Inventories (A: Mar. 2025 ) + Total Inventories (A: Mar. 2026 )) / count ) / Cost of Goods Sold (A: Mar. 2026 )*Days in Period
=( (9989.105 + 9798.627) / 2 ) / 33955.393*365
=9893.866 / 33955.393*365
=106.35

Advanced Drainage Systems's Days Inventory for the quarter that ended in Mar. 2026 is calculated as:

Days Inventory (Q: Mar. 2026 )
=Average Total Inventories / Cost of Goods Sold*Days in Period
=( (Total Inventories (Q: Dec. 2025 ) + Total Inventories (Q: Mar. 2026 )) / count ) / Cost of Goods Sold (Q: Mar. 2026 )*Days in Period
=( (7764.868 + 9798.627) / 2 ) / 7918.104*365 / 4
=8781.7475 / 7918.104*365 / 4
=101.20

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Frequently Asked Questions Learn more about Days Inventory →
What does a Days Inventory of 101.20 mean?
Advanced Drainage Systems (MEX:WMS) has a Days Inventory of 101.20 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Advanced Drainage Systems and its competitors. This is 10% above median its historical median of 91.94. Over the past decade, Advanced Drainage Systems' Days Inventory has ranged from 73.54 to 99.99. According to the industry distribution chart, Advanced Drainage Systems ranks #974 out of 1480 companies in the Construction industry, placing it in the top 65.8%.
Is Advanced Drainage Systems' Days Inventory too high?
Advanced Drainage Systems' current Days Inventory of 101.20 is 10% above median its 10-year median of 91.94. Over the past 10 years, this metric has ranged from a low of 73.54 to a high of 99.99. The Construction industry median Days Inventory is 50.47. Advanced Drainage Systems' value of 101.20 is 100.5% above this industry median. Based on the distribution chart, Advanced Drainage Systems ranks #974 out of 1480 companies in the Construction industry, which is below the industry midpoint. Overall, Advanced Drainage Systems has a GF Score™ of 59/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Advanced Drainage Systems' Days Inventory compare to SPXC and OC?
According to the Construction industry distribution chart, Advanced Drainage Systems ranks #974 out of 1480 companies for Days Inventory. This places Advanced Drainage Systems in the lower half of its industry. The industry median Days Inventory is 50.47. Advanced Drainage Systems' value of 101.20 is 100.5% above this benchmark. Historically, Advanced Drainage Systems' own Days Inventory has ranged from 73.54 to 99.99 over the past decade. While the company's 10-year median is 91.94 vs. the industry median of 50.47, Advanced Drainage Systems has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Days Inventory for a Construction company?
The median Days Inventory among Construction companies is 50.47, based on 1,480 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Advanced Drainage Systems's current Days Inventory of 101.20 is 100.5% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Advanced Drainage Systems and its competitors. For the Construction industry, the median Days Inventory is 50.47 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Advanced Drainage Systems's current Days Inventory is 101.20, which is 10% above median its own 10-year median of 91.94. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Advanced Drainage Systems stock overvalued right now?
Based on GuruFocus' analysis, Advanced Drainage Systems (MEX:WMS) is currently considered Fairly Valued. The stock's GF Value™ is MXN2,006.35, compared to a current price of MXN2,100.00 — trading 4.7% above its estimated fair value. The current Days Inventory is 101.20, which is 10% above median its 10-year median of 91.94 and 100.5% above the Construction industry median of 50.47. Advanced Drainage Systems' overall GF Score™ is 59/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For Advanced Drainage Systems (MEX:WMS), the current Days Inventory is 101.20 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Advanced Drainage Systems (MEX:WMS) Overvalued in 2026?

Based on GuruFocus' analysis, Advanced Drainage Systems stock appears to be overvalued. The current stock price of MXN2,100.00 is trading 4.7% above its estimated GF Value™ of MXN2,006.35. GuruFocus considers Advanced Drainage Systems to be Fairly Valued.

Key valuation signals for MEX:WMS:

  • Days Inventory: 101.20 (10% above median its 10-year median of 91.94)
  • GF Value™: MXN2,006.35 vs. price of MXN2,100.00 (4.7% above fair value)
  • GF Score™: 59/100 with 3 warning signs
  • Industry Position: 100.5% above the Construction median (#974 of 1480)

No single metric tells the full story. See the MEX:WMS stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Advanced Drainage Systems Business Description

Other Exchanges WMS:USA6DA:Germany
Address 4024 Green Stripe Lane, Hilliard, OH, USA, 43026
Advanced Drainage Systems Inc designs, manufactures and markets water management solutions in the stormwater and onsite wastewater industries, providing superior drainage solutions for use in the construction and agriculture markets. The company's products are used across a broad range of end markets and applications, including non-residential, residential, infrastructure and agriculture applications. It has two reportable segments: Stormwater and Wastewater. It derives the majority of revenue from the Stormwater segment, which manufactures and markets thermoplastic corrugated pipe and complementary products, including single wall pipe, N-12 HDPE pipe, polypropylene pipe, StormTech, Nyloplast, Inserta Tee, water quality filters and structures, and NDS channel drains, and access boxes.
59GF Score

Get the complete analysis for MEX:WMS

Days Inventory is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

MXN2,100.00
Price
MXN2,006.35
GF Value