Westport Fuel SystemsWPRT +5.11%44 Days Inventory is 155.24 as of Mar. 2026, which is 54% above its 10-year median of 100.63. GuruFocus rates WPRT with a GF Score™ of 44/100 and a GF Value™ of $1.10 (Significantly Overvalued). The stock has 9 warning signs investors should review. Among 1,295 Vehicles & Parts companies, Westport Fuel Systems ranks worse than 97.53% on this metric.
The historical rank and industry rank for Westport Fuel Systems's Days Inventory or its related term are showing as below:
WPRT'
s Days Inventory Range Over the Past 10 Years
Min: 72.93 Med: 100.63 Max: 404.32
Current: 345.1
During the past 13 years, Westport Fuel Systems's highest Days Inventory was 404.32. The lowest was 72.93. And the median was 100.63.
WPRT's Days Inventory is ranked worse than 97.53% of 1295
companies
in the Vehicles & Parts industry
Industry Median: 80.74
vs WPRT: 345.10
Westport Fuel Systems's Days Inventory
declined
from Mar. 2025 (550.86) to Mar. 2026 (155.24).
Inventory Turnover measures how fast the company turns over its inventory within a year.
Westport Fuel Systems's Inventory Turnover for the
three
months ended in Mar. 2026 was 0.59.
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.
Westport Fuel Systems's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 1.32.
Westport Fuel Systems (NAS:WPRT) 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.
Westport Fuel 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.
Westport Fuel Systems'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.
Westport Fuel Systems Days Inventory Related Terms
Westport Fuel Systems Days Inventory Historical Data
* Premium members only.
The historical data trend for Westport Fuel 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.
For the Auto Parts subindustry, Westport Fuel 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.
Westport Fuel Systems Days Inventory vs Vehicles & Parts Industry
For the Vehicles & Parts industry and Consumer Cyclical sector, Westport Fuel Systems's Days Inventory distribution charts can be found below:
* The bar in red indicates where Westport Fuel Systems'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.
Westport Fuel Systems (WPRT) has a Days Inventory of 155.24 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Westport Fuel Systems and its competitors. This is 54% above median its historical median of 100.63. Over the past decade, Westport Fuel Systems' Days Inventory has ranged from 72.93 to 404.32. According to the industry distribution chart, Westport Fuel Systems ranks #1263 out of 1295 companies in the Vehicles & Parts industry, placing it in the top 97.5%.
Is Westport Fuel Systems' Days Inventory too high?
Westport Fuel Systems' current Days Inventory of 155.24 is 54% above median its 10-year median of 100.63. Over the past 10 years, this metric has ranged from a low of 72.93 to a high of 404.32. The Vehicles & Parts industry median Days Inventory is 80.74. Westport Fuel Systems' value of 155.24 is 92.3% above this industry median. Based on the distribution chart, Westport Fuel Systems ranks #1263 out of 1295 companies in the Vehicles & Parts industry, which is in the bottom quartile relative to peers. Overall, Westport Fuel Systems has a GF Score™ of 44/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Westport Fuel Systems' Days Inventory compare to ORLY and AZO?
According to the Vehicles & Parts industry distribution chart, Westport Fuel Systems ranks #1263 out of 1295 companies for Days Inventory. This places Westport Fuel Systems in the lower half of its industry. The industry median Days Inventory is 80.74. Westport Fuel Systems' value of 155.24 is 92.3% above this benchmark. Historically, Westport Fuel Systems' own Days Inventory has ranged from 72.93 to 404.32 over the past decade. While the company's 10-year median is 100.63 vs. the industry median of 80.74, Westport Fuel 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 Vehicles & Parts company?
The median Days Inventory among Vehicles & Parts companies is 80.74, based on 1,295 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. Westport Fuel Systems's current Days Inventory of 155.24 is 92.3% 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 Westport Fuel Systems and its competitors. For the Vehicles & Parts industry, the median Days Inventory is 80.74 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Westport Fuel Systems's current Days Inventory is 155.24, which is 54% above median its own 10-year median of 100.63. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Westport Fuel Systems stock overvalued right now?
Based on GuruFocus' analysis, Westport Fuel Systems (WPRT) is currently considered Significantly Overvalued. The stock's GF Value™ is $1.10, compared to a current price of $2.47 — trading 124.5% above its estimated fair value. The current Days Inventory is 155.24, which is 54% above median its 10-year median of 100.63 and 92.3% above the Vehicles & Parts industry median of 80.74. Westport Fuel Systems' overall GF Score™ is 44/100 with 9 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 Westport Fuel Systems (WPRT), the current Days Inventory is 155.24 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 Westport Fuel Systems (WPRT) Overvalued in 2026?
Based on GuruFocus' analysis, Westport Fuel Systems stock appears to be overvalued.
The current stock price of $2.47 is trading 124.5% above its estimated GF Value™ of $1.10.
GuruFocus considers Westport Fuel Systems to be Significantly Overvalued.
Key valuation signals for WPRT:
Days Inventory: 155.24 (54% above median its 10-year median of 100.63)
GF Value™: $1.10 vs. price of $2.47 (124.5% above fair value)
Industry Position: 92.3% above the Vehicles & Parts median (#1263 of 1295)
No single metric tells the full story. See the WPRT stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Westport Fuel Systems Inc is an organization engaged in the engineering, manufacturing, and supply of alternative fuel systems and components for transportation applications. It has three reportable segments: High-Pressure Controls, Heavy-Duty OEM, and Cespira. It derives maximum revenue from Heavy-Duty OEM segment. Heavy-Duty OEM segment's products include HPDI related fuel system solutions and components. Geographically, the company operates in Europe, America and Asia, of which it generates maximum revenue from Europe. It also develops and supplies advanced LPG, CNG, LNG and H2 systems and components for OEM (original equipment manufacturer) D-OEM (delayed oem) and After Market (retrofit market) world-wide.
44GF Score
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