CSLCSLLY -2.30%73 Days Inventory is 307.37 as of Dec. 2025, which is 9% above its 10-year median of 281.10. GuruFocus rates CSLLY with a GF Score™ of 73/100 and a GF Value™ of $50.49 (Significantly Undervalued). The stock has 7 warning signs investors should review. Among 640 Biotechnology companies, CSL ranks worse than 84.53% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). CSL's Average Total Inventories for the
six
months ended in Dec. 2025 was $6,518 Mil. CSL's Cost of Goods Sold for the
six
months ended in Dec. 2025 was $3,870 Mil.
Hence, CSL's Days Inventory for the
six
months ended in Dec. 2025 was 307.37.
The historical rank and industry rank for CSL's Days Inventory or its related term are showing as below:
CSLLY'
s Days Inventory Range Over the Past 10 Years
Min: 230.69 Med: 281.1 Max: 621.03
Current: 621.03
During the past 13 years, CSL's highest Days Inventory was 621.03. The lowest was 230.69. And the median was 281.10.
CSLLY's Days Inventory is ranked worse than 84.53% of 640
companies
in the Biotechnology industry
Industry Median: 184.145
vs CSLLY: 621.03
CSL's Days Inventory
declined
from Jun. 2024 (308.81) to Dec. 2025 (307.37).
Inventory Turnover measures how fast the company turns over its inventory within a year.
CSL's Inventory Turnover for the
six
months ended in Dec. 2025 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.
CSL's Inventory-to-Revenue for the
six
months ended in Dec. 2025 was 0.81.
CSL (OTCPK:CSLLY) 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.
CSL'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.
CSL'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.
CSL Days Inventory Related Terms
CSL Days Inventory Historical Data
* Premium members only.
The historical data trend for CSL'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.
CSLLY vs VRTX, REGN, ALNY: Days Inventory Comparison
For the Biotechnology subindustry, CSL'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.
CSL Days Inventory vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, CSL's Days Inventory distribution charts can be found below:
* The bar in red indicates where CSL'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.
CSL (CSLLY) has a Days Inventory of 307.37 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on CSL and its competitors. This is near median its historical median of 281.10. Over the past decade, CSL's Days Inventory has ranged from 230.69 to 621.03. According to the industry distribution chart, CSL ranks #541 out of 640 companies in the Biotechnology industry, placing it in the top 84.5%.
Is CSL's Days Inventory too high?
CSL's current Days Inventory of 307.37 is near median its 10-year median of 281.10. Over the past 10 years, this metric has ranged from a low of 230.69 to a high of 621.03. The Biotechnology industry median Days Inventory is 184.15. CSL's value of 307.37 is 66.9% above this industry median. Based on the distribution chart, CSL ranks #541 out of 640 companies in the Biotechnology industry, which is in the bottom quartile relative to peers. Overall, CSL has a GF Score™ of 73/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does CSL's Days Inventory compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, CSL ranks #541 out of 640 companies for Days Inventory. This places CSL in the lower half of its industry. The industry median Days Inventory is 184.15. CSL's value of 307.37 is 66.9% above this benchmark. Historically, CSL's own Days Inventory has ranged from 230.69 to 621.03 over the past decade. While the company's 10-year median is 281.10 vs. the industry median of 184.15, CSL 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 Biotechnology company?
The median Days Inventory among Biotechnology companies is 184.15, based on 640 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. CSL's current Days Inventory of 307.37 is 66.9% 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 CSL and its competitors. For the Biotechnology industry, the median Days Inventory is 184.15 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. CSL's current Days Inventory is 307.37, which is near median its own 10-year median of 281.10. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is CSL stock overvalued right now?
Based on GuruFocus' analysis, CSL (CSLLY) is currently considered Significantly Undervalued. The stock's GF Value™ is $50.49, compared to a current price of $19.98 — trading 60.4% below its estimated fair value. The current Days Inventory is 307.37, which is near median its 10-year median of 281.10 and 66.9% above the Biotechnology industry median of 184.15. CSL's overall GF Score™ is 73/100 with 7 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 CSL (CSLLY), the current Days Inventory is 307.37 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 CSL (CSLLY) Overvalued in 2026?
Based on GuruFocus' analysis, CSL stock appears to be undervalued.
The current stock price of $19.98 is trading 60.4% below its estimated GF Value™ of $50.49.
GuruFocus considers CSL to be Significantly Undervalued.
Key valuation signals for CSLLY:
Days Inventory: 307.37 (near median its 10-year median of 281.10)
GF Value™: $50.49 vs. price of $19.98 (60.4% below fair value)
Industry Position: 66.9% above the Biotechnology median (#541 of 640)
No single metric tells the full story. See the CSLLY stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
CSL is one of the largest global biotech companies and has three main segments. CSL Behring either uses plasma-derived proteins or recombinants to treat conditions including immunodeficiencies, bleeding disorders, and neurological indications. CSL Seqirus is the world's second-largest influenza vaccination business and was acquired in fiscal 2016. CSL Vifor is an iron deficiency and nephrology business and was acquired in fiscal 2023. CSL has a strong R&D track record, and the product portfolio and pipeline include nonplasma products as the firm continues to broaden its scope. Originally formed in Australia as a government-owned entity, CSL now earns roughly half its revenue in North America and a quarter in Europe.
73GF Score
Get the complete analysis for CSLLY
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
CSLLY has been successfully added to your 
