CSLHAM:CSJ +0.07%73 FCF Margin % is 7.98% as of Dec. 2025, which is 29% below its 10-year median of 11.18. GuruFocus rates HAM:CSJ with a GF Score™ of 73/100 and a GF Value™ of €170.71 (Significantly Undervalued). The stock has 7 warning signs investors should review. Among 959 Biotechnology companies, CSL ranks better than 81.44% on this metric.
FCF Margin % is calculated as Free Cash Flow divided by its Revenue. CSL's Free Cash Flow for the
six
months ended in Dec. 2025 was €552 Mil. CSL's Revenue for the
six
months ended in Dec. 2025 was €6,911 Mil. Therefore, CSL's FCF Margin % for the quarter that ended in Dec. 2025 was 7.98%.
The historical rank and industry rank for CSL's FCF Margin % or its related term are showing as below:
HAM:CSJ'
s FCF Margin % Range Over the Past 10 Years
Min: 4.23 Med: 11.18 Max: 19.04
Current: 7.98
During the past 13 years, the highest FCF Margin % of CSL was 19.04%. The lowest was 4.23%. And the median was 11.18%.
HAM:CSJ's FCF Margin % is ranked better than 81.44% of 959
companies
in the Biotechnology industry
Industry Median: -84.65
vs HAM:CSJ: 7.98
CSL FCF Margin % Related Terms
CSL FCF Margin % Historical Data
* Premium members only.
The historical data trend for CSL's FCF Margin % 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.
HAM:CSJ vs VRTX, REGN, ALNY: FCF Margin % Comparison
For the Biotechnology subindustry, CSL's FCF Margin %, along with its competitors' market caps and FCF Margin % 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 FCF Margin % vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, CSL's FCF Margin % distribution charts can be found below:
* The bar in red indicates where CSL's FCF Margin % 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 (HAM:CSJ) has a FCF Margin % of 7.98% as of Dec. 2025. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on CSL and its competitors. This is 29% below median its historical median of 11.18. Over the past decade, CSL's FCF Margin % has ranged from 4.23 to 19.04. According to the industry distribution chart, CSL ranks #178 out of 959 companies in the Biotechnology industry, placing it in the top 18.6%.
Is CSL's FCF Margin % too high?
CSL's current FCF Margin % of 7.98% is 29% below median its 10-year median of 11.18. Over the past 10 years, this metric has ranged from a low of 4.23 to a high of 19.04. Based on the distribution chart, CSL ranks #178 out of 959 companies in the Biotechnology industry, which is in the top quartile — a strong position 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 FCF Margin % compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, CSL ranks #178 out of 959 companies for FCF Margin %. This places CSL in the top 19% of its industry — outperforming the majority of peers. Historically, CSL's own FCF Margin % has ranged from 4.23 to 19.04 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good FCF Margin % for a Biotechnology company?
A good FCF Margin % depends on the Biotechnology industry context. However, FCF Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high FCF Margin % mean?
A high FCF Margin % can signal that a stock is expensive relative to its fundamentals. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on CSL and its competitors. CSL's current FCF Margin % is 7.98%, which is 29% below median its own 10-year median of 11.18. 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 (HAM:CSJ) is currently considered Significantly Undervalued. The stock's GF Value™ is €170.71, compared to a current price of €68.23 — trading 60% below its estimated fair value. The current FCF Margin % is 7.98%, which is 29% below median its 10-year median of 11.18. 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 FCF Margin % calculated?
FCF Margin % is calculated from a company's financial statements. For CSL (HAM:CSJ), the current FCF Margin % is 7.98% 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 (HAM:CSJ) Overvalued in 2026?
Based on GuruFocus' analysis, CSL stock appears to be undervalued.
The current stock price of €68.23 is trading 60% below its estimated GF Value™ of €170.71.
GuruFocus considers CSL to be Significantly Undervalued.
Key valuation signals for HAM:CSJ:
FCF Margin %: 7.98% (29% below median its 10-year median of 11.18)
GF Value™: €170.71 vs. price of €68.23 (60% below fair value)
No single metric tells the full story. See the HAM:CSJ 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
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