PorvairLSE:PRV -0.49%95 Days Inventory is 94.70 as of May. 2026, which is 7% above its 10-year median of 88.77. GuruFocus rates LSE:PRV with a GF Score™ of 95/100 and a GF Value™ of £7.55 (Fairly Valued). The stock has 1 warning sign investors should review. Among 2,968 Industrial Products companies, Porvair ranks better than 64.42% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). Porvair's Average Total Inventories for the
six
months ended in May. 2026 was £35.3 Mil. Porvair's Cost of Goods Sold for the
six
months ended in May. 2026 was £68.1 Mil.
Hence, Porvair's Days Inventory for the
six
months ended in May. 2026 was 94.70.
The historical rank and industry rank for Porvair's Days Inventory or its related term are showing as below:
LSE:PRV'
s Days Inventory Range Over the Past 10 Years
Min: 68.05 Med: 88.77 Max: 100.9
Current: 94.05
During the past 13 years, Porvair's highest Days Inventory was 100.90. The lowest was 68.05. And the median was 88.77.
LSE:PRV's Days Inventory is ranked better than 64.42% of 2968
companies
in the Industrial Products industry
Industry Median: 119.47
vs LSE:PRV: 94.05
Porvair's Days Inventory
increased
from May. 2025 (90.06) to May. 2026 (94.70).
It might indicate that Porvair's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Porvair's Inventory Turnover for the
six
months ended in May. 2026 was 1.93.
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.
Porvair's Inventory-to-Revenue for the
six
months ended in May. 2026 was 0.33.
Porvair (LSE:PRV) 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.
Porvair's Inventory Turnover for the
six
months ended in May. 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.
Porvair's Inventory to Revenue for the
six
months ended in May. 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.
Porvair Days Inventory Related Terms
Porvair Days Inventory Historical Data
* Premium members only.
The historical data trend for Porvair'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.
LSE:PRV vs VLTO, ZWS, CECO: Days Inventory Comparison
For the Pollution & Treatment Controls subindustry, Porvair'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.
Porvair Days Inventory vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Porvair's Days Inventory distribution charts can be found below:
* The bar in red indicates where Porvair'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.
Porvair (LSE:PRV) has a Days Inventory of 94.70 as of May. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Porvair and its competitors. This is near median its historical median of 88.77. Over the past decade, Porvair's Days Inventory has ranged from 68.05 to 100.90. According to the industry distribution chart, Porvair ranks #1056 out of 2968 companies in the Industrial Products industry, placing it in the top 35.6%.
Is Porvair's Days Inventory too high?
Porvair's current Days Inventory of 94.70 is near median its 10-year median of 88.77. Over the past 10 years, this metric has ranged from a low of 68.05 to a high of 100.90. The Industrial Products industry median Days Inventory is 119.47. Porvair's value of 94.70 is 20.7% below this industry median. Based on the distribution chart, Porvair ranks #1056 out of 2968 companies in the Industrial Products industry, which is above the industry midpoint. Overall, Porvair has a GF Score™ of 95/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Porvair's Days Inventory compare to VLTO and ZWS?
According to the Industrial Products industry distribution chart, Porvair ranks #1056 out of 2968 companies for Days Inventory. This puts Porvair in the upper half of its industry. The industry median Days Inventory is 119.47. Porvair's value of 94.70 is 20.7% below this benchmark. Historically, Porvair's own Days Inventory has ranged from 68.05 to 100.90 over the past decade. While the company's 10-year median is 88.77 vs. the industry median of 119.47, Porvair 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 an Industrial Products company?
The median Days Inventory among Industrial Products companies is 119.47, based on 2,968 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. Porvair's current Days Inventory of 94.70 is 20.7% 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 Porvair and its competitors. For the Industrial Products industry, the median Days Inventory is 119.47 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Porvair's current Days Inventory is 94.70, which is near median its own 10-year median of 88.77. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Porvair stock overvalued right now?
Based on GuruFocus' analysis, Porvair (LSE:PRV) is currently considered Fairly Valued. The stock's GF Value™ is £7.55, compared to a current price of £8.06 — trading 6.8% above its estimated fair value. The current Days Inventory is 94.70, which is near median its 10-year median of 88.77 and 20.7% below the Industrial Products industry median of 119.47. Porvair's overall GF Score™ is 95/100 with 1 warning sign 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 Porvair (LSE:PRV), the current Days Inventory is 94.70 as of May. 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 Porvair (LSE:PRV) Overvalued in 2026?
Based on GuruFocus' analysis, Porvair stock appears to be overvalued.
The current stock price of £8.06 is trading 6.8% above its estimated GF Value™ of £7.55.
GuruFocus considers Porvair to be Fairly Valued.
Key valuation signals for LSE:PRV:
Days Inventory: 94.70 (near median its 10-year median of 88.77)
GF Value™: £7.55 vs. price of £8.06 (6.8% above fair value)
Industry Position: 20.7% below the Industrial Products median (#1056 of 2968)
No single metric tells the full story. See the LSE:PRV stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Porvair PLC is an environmental treatment control company. It develops filtration solutions to be used by various types of industries. The company caters to its clients through three divisions: Aerospace and Industrial, Laboratory, and Metal Melt Quality. The Aerospace and Industrial Division is a key revenue generator, principally serving the aviation, energy, and industrial markets. Laboratory Division principally serving the bioscience and environmental laboratory instrument and consumables market. Metal Melt Quality Division principally serves the world aluminium, North American Free Trade Agreement (NAFTA), iron foundry, and superalloys markets. The company generates the majority of its manufacturing revenue from sales in the United States.
95GF Score
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