Waste ManagementWBO:WM +1.27%90 Days Inventory is 5.65 as of Mar. 2026, which is 30% above its 10-year median of 4.35. GuruFocus rates WBO:WM with a GF Score™ of 90/100 and a GF Value™ of €216.52 (Fairly Valued). The stock has 4 warning signs investors should review. Among 214 Waste Management companies, Waste Management ranks better than 84.58% on this metric.
The historical rank and industry rank for Waste Management's Days Inventory or its related term are showing as below:
WBO:WM'
s Days Inventory Range Over the Past 10 Years
Min: 3.76 Med: 4.35 Max: 5.45
Current: 5.45
During the past 13 years, Waste Management's highest Days Inventory was 5.45. The lowest was 3.76. And the median was 4.35.
WBO:WM's Days Inventory is ranked better than 84.58% of 214
companies
in the Waste Management industry
Industry Median: 28.535
vs WBO:WM: 5.45
Waste Management's Days Inventory
increased
from Mar. 2025 (5.44) to Mar. 2026 (5.65).
It might indicate that Waste Management's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Waste Management's Inventory Turnover for the
three
months ended in Mar. 2026 was 16.16.
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.
Waste Management's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.04.
Waste Management (WBO:WM) 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.
Waste Management'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.
Waste Management's Inventory to Revenue for the
three
months ended in Mar. 2026 is calculated as
* 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.
Waste Management Days Inventory Related Terms
Waste Management Days Inventory Historical Data
* Premium members only.
The historical data trend for Waste Management'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.
WBO:WM vs RSG, WCN, CLH: Days Inventory Comparison
For the Waste Management subindustry, Waste Management'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.
Waste Management Days Inventory vs Waste Management Industry
For the Waste Management industry and Industrials sector, Waste Management's Days Inventory distribution charts can be found below:
* The bar in red indicates where Waste Management's Days Inventory falls into.
* 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.
Waste Management (WBO:WM) has a Days Inventory of 5.65 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Waste Management and its competitors. This is 30% above median its historical median of 4.35. Over the past decade, Waste Management's Days Inventory has ranged from 3.76 to 5.45. According to the industry distribution chart, Waste Management ranks #33 out of 214 companies in the Waste Management industry, placing it in the top 15.4%.
Is Waste Management's Days Inventory too high?
Waste Management's current Days Inventory of 5.65 is 30% above median its 10-year median of 4.35. Over the past 10 years, this metric has ranged from a low of 3.76 to a high of 5.45. The Waste Management industry median Days Inventory is 28.54. Waste Management's value of 5.65 is 80.2% below this industry median. Based on the distribution chart, Waste Management ranks #33 out of 214 companies in the Waste Management industry, which is in the top quartile — a strong position relative to peers. Overall, Waste Management has a GF Score™ of 90/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Waste Management's Days Inventory compare to RSG and WCN?
According to the Waste Management industry distribution chart, Waste Management ranks #33 out of 214 companies for Days Inventory. This places Waste Management in the top 15% of its industry — outperforming the majority of peers. The industry median Days Inventory is 28.54. Waste Management's value of 5.65 is 80.2% below this benchmark. Historically, Waste Management's own Days Inventory has ranged from 3.76 to 5.45 over the past decade. While the company's 10-year median is 4.35 vs. the industry median of 28.54, Waste Management has consistently been below 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 Waste Management company?
The median Days Inventory among Waste Management companies is 28.54, based on 214 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. Waste Management's current Days Inventory of 5.65 is 80.2% below 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 Waste Management and its competitors. For the Waste Management industry, the median Days Inventory is 28.54 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Waste Management's current Days Inventory is 5.65, which is 30% above median its own 10-year median of 4.35. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Waste Management stock overvalued right now?
Based on GuruFocus' analysis, Waste Management (WBO:WM) is currently considered Fairly Valued. The stock's GF Value™ is €216.52, compared to a current price of €199.10 — trading 8% below its estimated fair value. The current Days Inventory is 5.65, which is 30% above median its 10-year median of 4.35 and 80.2% below the Waste Management industry median of 28.54. Waste Management's overall GF Score™ is 90/100 with 4 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 Waste Management (WBO:WM), the current Days Inventory is 5.65 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 Waste Management (WBO:WM) Overvalued in 2026?
Based on GuruFocus' analysis, Waste Management stock appears to be undervalued.
The current stock price of €199.10 is trading 8% below its estimated GF Value™ of €216.52.
GuruFocus considers Waste Management to be Fairly Valued.
Key valuation signals for WBO:WM:
Days Inventory: 5.65 (30% above median its 10-year median of 4.35)
GF Value™: €216.52 vs. price of €199.10 (8% below fair value)
Industry Position: 80.2% below the Waste Management median (#33 of 214)
No single metric tells the full story. See the WBO:WM stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
WM, previously known as Waste Management, ranks as the largest integrated provider of traditional solid waste services in the United States, operating 257 active landfill sites and about 342 transfer stations that help with transporting waste efficiently and economically. The company serves residential, commercial, industrial, and medical end markets for waste collection, transfer, and disposal. The company also has an energy business emanating from the beneficial use of landfill gas and is a leading recycler in North America.
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