Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
LyondellBasell Industries NVBSP:L1YB34 +1.00%58 Cyclically Adjusted PB Ratio is 1.61 as of Aug. 31, 2026, which is 50% below its 10-year median of 3.22. GuruFocus rates BSP:L1YB34 with a GF Score™ of 58/100 and a GF Value™ of R$206.01 (Modestly Undervalued). The stock has 6 warning signs investors should review. Among 1,095 Chemicals companies, LyondellBasell Industries NV ranks worse than 52.24% on this metric.
The historical rank and industry rank for LyondellBasell Industries NV's Cyclically Adjusted PB Ratio or its related term are showing as below:
BSP:L1YB34'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 1.25 Med: 3.22 Max: 5.17
Current: 1.77
During the past years, LyondellBasell Industries NV's highest Cyclically Adjusted PB Ratio was 5.17. The lowest was 1.25. And the median was 3.22.
BSP:L1YB34's Cyclically Adjusted PB Ratio is ranked worse than 52.24% of 1095
companies
in the Chemicals industry
Industry Median: 1.69
vs BSP:L1YB34: 1.77
The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.
LyondellBasell Industries NV's adjusted book value per share data for the three months ended in Jun. 2026 was R$84.642. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is R$102.40 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
LyondellBasell Industries NV (BSP:L1YB34) Cyclically Adjusted PB Ratio Explanation
Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.
LyondellBasell Industries NV Cyclically Adjusted PB Ratio Related Terms
LyondellBasell Industries NV Cyclically Adjusted PB Ratio Historical Data
* 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.
LyondellBasell Industries NV Cyclically Adjusted PB Ratio Chart
BSP:L1YB34 vs IFF, DD, ALB: Cyclically Adjusted PB Ratio Comparison
For the Specialty Chemicals subindustry, LyondellBasell Industries NV's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio 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.
LyondellBasell Industries NV Cyclically Adjusted PB Ratio vs Chemicals Industry
For the Chemicals industry and Basic Materials sector, LyondellBasell Industries NV's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where LyondellBasell Industries NV's Cyclically Adjusted PB Ratio falls into.
LyondellBasell Industries NV Cyclically Adjusted PB Ratio Calculation
Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.
* 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.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
What does a Cyclically Adjusted PB Ratio of 1.61 mean?
LyondellBasell Industries NV (BSP:L1YB34) has a Cyclically Adjusted PB Ratio of 1.61 as of Aug. 31, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on LyondellBasell Industries NV and its competitors. This is 50% below median its historical median of 3.22. Over the past decade, LyondellBasell Industries NV's Cyclically Adjusted PB Ratio has ranged from 1.25 to 5.17. According to the industry distribution chart, LyondellBasell Industries NV ranks #572 out of 1095 companies in the Chemicals industry, placing it in the top 52.2%.
Is LyondellBasell Industries NV's Cyclically Adjusted PB Ratio too high?
LyondellBasell Industries NV's current Cyclically Adjusted PB Ratio of 1.61 is 50% below median its 10-year median of 3.22. Over the past 10 years, this metric has ranged from a low of 1.25 to a high of 5.17. The Chemicals industry median Cyclically Adjusted PB Ratio is 1.69. LyondellBasell Industries NV's value of 1.61 is 4.7% below this industry median. Based on the distribution chart, LyondellBasell Industries NV ranks #572 out of 1095 companies in the Chemicals industry, which is below the industry midpoint. Overall, LyondellBasell Industries NV has a GF Score™ of 58/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does LyondellBasell Industries NV's Cyclically Adjusted PB Ratio compare to IFF and DD?
According to the Chemicals industry distribution chart, LyondellBasell Industries NV ranks #572 out of 1095 companies for Cyclically Adjusted PB Ratio. This places LyondellBasell Industries NV in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.69. LyondellBasell Industries NV's value of 1.61 is 4.7% below this benchmark. Historically, LyondellBasell Industries NV's own Cyclically Adjusted PB Ratio has ranged from 1.25 to 5.17 over the past decade. While the company's 10-year median is 3.22 vs. the industry median of 1.69, LyondellBasell Industries NV 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 Cyclically Adjusted PB Ratio for a Chemicals company?
The median Cyclically Adjusted PB Ratio among Chemicals companies is 1.69, based on 1,095 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. LyondellBasell Industries NV's current Cyclically Adjusted PB Ratio of 1.61 is 4.7% 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 Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on LyondellBasell Industries NV and its competitors. For the Chemicals industry, the median Cyclically Adjusted PB Ratio is 1.69 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. LyondellBasell Industries NV's current Cyclically Adjusted PB Ratio is 1.61, which is 50% below median its own 10-year median of 3.22. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is LyondellBasell Industries NV stock overvalued right now?
Based on GuruFocus' analysis, LyondellBasell Industries NV (BSP:L1YB34) is currently considered Modestly Undervalued. The stock's GF Value™ is R$206.01, compared to a current price of R$165.00 — trading 19.9% below its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.61, which is 50% below median its 10-year median of 3.22 and 4.7% below the Chemicals industry median of 1.69. LyondellBasell Industries NV's overall GF Score™ is 58/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For LyondellBasell Industries NV (BSP:L1YB34), the current Cyclically Adjusted PB Ratio is 1.61 as of Aug. 31, 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 LyondellBasell Industries NV (BSP:L1YB34) Overvalued in 2026?
Based on GuruFocus' analysis, LyondellBasell Industries NV stock appears to be undervalued.
The current stock price of R$165.00 is trading 19.9% below its estimated GF Value™ of R$206.01.
GuruFocus considers LyondellBasell Industries NV to be Modestly Undervalued.
Key valuation signals for BSP:L1YB34:
Cyclically Adjusted PB Ratio: 1.61 (50% below median its 10-year median of 3.22)
GF Value™: R$206.01 vs. price of R$165.00 (19.9% below fair value)
Industry Position: 4.7% below the Chemicals median (#572 of 1095)
No single metric tells the full story. See the BSP:L1YB34 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
LyondellBasell is a petrochemical producer with operations in the United States, Europe, and Asia. The company is the world's largest producer of polypropylene and also a major producer of polyethylene and propylene oxide. Its chemicals are used in various consumer and industrial end products. Well over half of LyondellBasell's production comes from its North American operations.
58GF Score
Get the complete analysis for BSP:L1YB34
Cyclically Adjusted PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
BSP:L1YB34 has been successfully added to your 
