Zai LabZLAB -2.81%64 Cyclically Adjusted PB Ratio is 0.93 as of Jun. 28, 2026, which is 24% below its 10-year median of 1.22. GuruFocus rates ZLAB with a GF Score™ of 64/100 and a GF Value™ of $30.30 (Possible Value Trap). The stock has 8 warning signs investors should review. Among 703 Biotechnology companies, Zai Lab ranks better than 62.16% on this metric.
As of today (2026-06-28), Zai Lab's current share price is $18.00. Zai Lab's Cyclically Adjusted Book per Share for the fiscal year that ended in Dec25 was $19.37. Zai Lab's Cyclically Adjusted PB Ratio for today is 0.93.
The historical rank and industry rank for Zai Lab's Cyclically Adjusted PB Ratio or its related term are showing as below:
ZLAB'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.86 Med: 1.22 Max: 2.11
Current: 0.93
During the past 11 years, Zai Lab's highest Cyclically Adjusted PB Ratio was 2.11. The lowest was 0.86. And the median was 1.22.
ZLAB's Cyclically Adjusted PB Ratio is ranked better than 62.16% of 703
companies
in the Biotechnology industry
Industry Median: 1.55
vs ZLAB: 0.93
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.
Zai Lab's adjusted book value per share data of for the fiscal year that ended in Dec25 was $6.467. 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 $19.37 for the trailing ten years ended in Dec25.
Shiller PE for Stocks: The True Measure of Stock Valuation
Zai Lab (NAS:ZLAB) 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.
Zai Lab Cyclically Adjusted PB Ratio Related Terms
Zai Lab Cyclically Adjusted PB Ratio Historical Data
* Premium members only.
The historical data trend for Zai Lab's Cyclically Adjusted PB Ratio 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.
ZLAB vs TYRA, TRVI, OCUL: Cyclically Adjusted PB Ratio Comparison
For the Biotechnology subindustry, Zai Lab'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.
Zai Lab Cyclically Adjusted PB Ratio vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, Zai Lab's Cyclically Adjusted PB Ratio distribution charts can be found below:
* The bar in red indicates where Zai Lab's Cyclically Adjusted PB Ratio falls into.
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.
Zai Lab's Cyclically Adjusted PB Ratio for today 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.
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 0.93 mean?
Zai Lab (ZLAB) has a Cyclically Adjusted PB Ratio of 0.93 as of Jun. 28, 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 Zai Lab and its competitors. This is 24% below median its historical median of 1.22. Over the past decade, Zai Lab's Cyclically Adjusted PB Ratio has ranged from 0.86 to 2.11. According to the industry distribution chart, Zai Lab ranks #266 out of 703 companies in the Biotechnology industry, placing it in the top 37.8%.
Is Zai Lab's Cyclically Adjusted PB Ratio too high?
Zai Lab's current Cyclically Adjusted PB Ratio of 0.93 is 24% below median its 10-year median of 1.22. Over the past 10 years, this metric has ranged from a low of 0.86 to a high of 2.11. The Biotechnology industry median Cyclically Adjusted PB Ratio is 1.55. Zai Lab's value of 0.93 is 40% below this industry median. Based on the distribution chart, Zai Lab ranks #266 out of 703 companies in the Biotechnology industry, which is above the industry midpoint. Overall, Zai Lab has a GF Score™ of 64/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Zai Lab's Cyclically Adjusted PB Ratio compare to TYRA and TRVI?
According to the Biotechnology industry distribution chart, Zai Lab ranks #266 out of 703 companies for Cyclically Adjusted PB Ratio. This puts Zai Lab in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.55. Zai Lab's value of 0.93 is 40% below this benchmark. Historically, Zai Lab's own Cyclically Adjusted PB Ratio has ranged from 0.86 to 2.11 over the past decade. While the company's 10-year median is 1.22 vs. the industry median of 1.55, Zai Lab 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 Biotechnology company?
The median Cyclically Adjusted PB Ratio among Biotechnology companies is 1.55, based on 703 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. Zai Lab's current Cyclically Adjusted PB Ratio of 0.93 is 40% 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 Zai Lab and its competitors. For the Biotechnology industry, the median Cyclically Adjusted PB Ratio is 1.55 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Zai Lab's current Cyclically Adjusted PB Ratio is 0.93, which is 24% below median its own 10-year median of 1.22. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Zai Lab stock overvalued right now?
Based on GuruFocus' analysis, Zai Lab (ZLAB) is currently considered Possible Value Trap. The stock's GF Value™ is $30.30, compared to a current price of $18.00 — trading 40.6% below its estimated fair value. The current Cyclically Adjusted PB Ratio is 0.93, which is 24% below median its 10-year median of 1.22 and 40% below the Biotechnology industry median of 1.55. Zai Lab's overall GF Score™ is 64/100 with 8 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 Zai Lab (ZLAB), the current Cyclically Adjusted PB Ratio is 0.93 as of Jun. 28, 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 Zai Lab (ZLAB) Overvalued in 2026?
Based on GuruFocus' analysis, Zai Lab stock appears to be undervalued.
The current stock price of $18.00 is trading 40.6% below its estimated GF Value™ of $30.30.
GuruFocus considers Zai Lab to be Possible Value Trap.
Key valuation signals for ZLAB:
Cyclically Adjusted PB Ratio: 0.93 (24% below median its 10-year median of 1.22)
GF Value™: $30.30 vs. price of $18.00 (40.6% below fair value)
Industry Position: 40% below the Biotechnology median (#266 of 703)
No single metric tells the full story. See the ZLAB stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Zai Lab Ltd is a biopharmaceutical company focusing on discovering or licensing, developing, and commercializing proprietary therapeutics that address areas of unmet medical need including in the fields of oncology, autoimmune and infectious diseases. Zai Lab has a diverse pipeline of potentially first-in-class product candidates developed through in-house R&D and global partnerships. The company has successfully commercialized several products in China, including Zejula, Optune, Qinlock, and Nuzyra, with plans for further expansion The pipeline of proprietary drug candidates of the company includes ZL-1222, ZL-1311, ZL-6201 and many others.
64GF Score
Get the complete analysis for ZLAB
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
ZLAB has been successfully added to your 
