Lonza GroupFRA:LO3 +0.66%81 Days Inventory is 165.43 as of Dec. 2025, which is 13% above its 10-year median of 146.58. GuruFocus rates FRA:LO3 with a GF Score™ of 81/100 and a GF Value™ of €642.72 (Fairly Valued). The stock has 3 warning signs investors should review. Among 177 Medical Diagnostics & Research companies, Lonza Group ranks worse than 79.1% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). Lonza Group's Average Total Inventories for the
six
months ended in Dec. 2025 was €1,883 Mil. Lonza Group's Cost of Goods Sold for the
six
months ended in Dec. 2025 was €2,077 Mil.
Hence, Lonza Group's Days Inventory for the
six
months ended in Dec. 2025 was 165.43.
The historical rank and industry rank for Lonza Group's Days Inventory or its related term are showing as below:
FRA:LO3'
s Days Inventory Range Over the Past 10 Years
Min: 119.62 Med: 146.58 Max: 197.29
Current: 151.29
During the past 13 years, Lonza Group's highest Days Inventory was 197.29. The lowest was 119.62. And the median was 146.58.
FRA:LO3's Days Inventory is ranked worse than 79.1% of 177
companies
in the Medical Diagnostics & Research industry
Industry Median: 70.8
vs FRA:LO3: 151.29
Lonza Group's Days Inventory
declined
from Dec. 2024 (177.18) to Dec. 2025 (165.43).
Inventory Turnover measures how fast the company turns over its inventory within a year.
Lonza Group's Inventory Turnover for the
six
months ended in Dec. 2025 was 1.10.
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.
Lonza Group's Inventory-to-Revenue for the
six
months ended in Dec. 2025 was 0.59.
Lonza Group (FRA:LO3) 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.
Lonza Group's Inventory Turnover for the
six
months ended in Dec. 2025 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.
Lonza Group's Inventory to Revenue for the
six
months ended in Dec. 2025 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.
Lonza Group Days Inventory Related Terms
Lonza Group Days Inventory Historical Data
* Premium members only.
The historical data trend for Lonza Group'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.
FRA:LO3 vs TMO, DHR, IDXX: Days Inventory Comparison
For the Diagnostics & Research subindustry, Lonza Group'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.
Lonza Group Days Inventory vs Medical Diagnostics & Research Industry
For the Medical Diagnostics & Research industry and Healthcare sector, Lonza Group's Days Inventory distribution charts can be found below:
* The bar in red indicates where Lonza Group'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.
Lonza Group (FRA:LO3) has a Days Inventory of 165.43 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Lonza Group and its competitors. This is 13% above median its historical median of 146.58. Over the past decade, Lonza Group's Days Inventory has ranged from 119.62 to 197.29. According to the industry distribution chart, Lonza Group ranks #140 out of 177 companies in the Medical Diagnostics & Research industry, placing it in the top 79.1%.
Is Lonza Group's Days Inventory too high?
Lonza Group's current Days Inventory of 165.43 is 13% above median its 10-year median of 146.58. Over the past 10 years, this metric has ranged from a low of 119.62 to a high of 197.29. The Medical Diagnostics & Research industry median Days Inventory is 70.80. Lonza Group's value of 165.43 is 133.7% above this industry median. Based on the distribution chart, Lonza Group ranks #140 out of 177 companies in the Medical Diagnostics & Research industry, which is in the bottom quartile relative to peers. Overall, Lonza Group has a GF Score™ of 81/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Lonza Group's Days Inventory compare to TMO and DHR?
According to the Medical Diagnostics & Research industry distribution chart, Lonza Group ranks #140 out of 177 companies for Days Inventory. This places Lonza Group in the lower half of its industry. The industry median Days Inventory is 70.80. Lonza Group's value of 165.43 is 133.7% above this benchmark. Historically, Lonza Group's own Days Inventory has ranged from 119.62 to 197.29 over the past decade. While the company's 10-year median is 146.58 vs. the industry median of 70.80, Lonza Group 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 Medical Diagnostics & Research company?
The median Days Inventory among Medical Diagnostics & Research companies is 70.80, based on 177 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. Lonza Group's current Days Inventory of 165.43 is 133.7% 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 Lonza Group and its competitors. For the Medical Diagnostics & Research industry, the median Days Inventory is 70.80 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Lonza Group's current Days Inventory is 165.43, which is 13% above median its own 10-year median of 146.58. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Lonza Group stock overvalued right now?
Based on GuruFocus' analysis, Lonza Group (FRA:LO3) is currently considered Fairly Valued. The stock's GF Value™ is €642.72, compared to a current price of €614.00 — trading 4.5% below its estimated fair value. The current Days Inventory is 165.43, which is 13% above median its 10-year median of 146.58 and 133.7% above the Medical Diagnostics & Research industry median of 70.80. Lonza Group's overall GF Score™ is 81/100 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 Lonza Group (FRA:LO3), the current Days Inventory is 165.43 as of Dec. 2025. 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 Lonza Group (FRA:LO3) Overvalued in 2026?
Based on GuruFocus' analysis, Lonza Group stock appears to be undervalued.
The current stock price of €614.00 is trading 4.5% below its estimated GF Value™ of €642.72.
GuruFocus considers Lonza Group to be Fairly Valued.
Key valuation signals for FRA:LO3:
Days Inventory: 165.43 (13% above median its 10-year median of 146.58)
GF Value™: €642.72 vs. price of €614.00 (4.5% below fair value)
Industry Position: 133.7% above the Medical Diagnostics & Research median (#140 of 177)
No single metric tells the full story. See the FRA:LO3 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Lonza Group is a contract development and manufacturing organization. It operates under four segments: small molecules, biologics, cell and gene, and capsules and health ingredients. Lonza derives its revenue primarily from long-term supply agreements with pharmaceutical customers. The company provides development and manufacturing services throughout the entire lifecycle of a product, from drug research to commercial supply. The majority of Lonza's customers are pharmaceutical and biotechnology companies, academic institutions, and government research organizations.
81GF Score
Get the complete analysis for FRA:LO3
Days Inventory is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
FRA:LO3 has been successfully added to your 
