The a2 Milk Co (ASX:A2M) Cyclically Adjusted Book per Share: A$1.29 (As of Dec. 2025)


ASX:A2M The a2 Milk Co Ltd ASX:A2M
82 GF Score
Price A$7.44
GF Value A$6.66
Valuation Modestly Overvalued
! 3 Warning Signs
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What is The a2 Milk Co Cyclically Adjusted Book per Share?

The a2 Milk Co ASX:A2M +1.36% 82 Cyclically Adjusted Book per Share is A$1.29 as of Dec. 2025. GuruFocus rates ASX:A2M with a GF Score™ of 82/100 and a GF Value™ of A$6.66 (Modestly Overvalued). The stock has 3 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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.

The a2 Milk Co's adjusted book value per share data for the fiscal year that ended in Jun. 2025 was A$1.858. 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 A$1.29 for the trailing ten years ended in Jun. 2025.

During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 20.90% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 25.70% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 48.20% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of The a2 Milk Co was 86.60% per year. The lowest was 20.90% per year. And the median was 47.65% per year.

As of today (2026-07-02), The a2 Milk Co's current stock price is A$ 7.44. The a2 Milk Co's Cyclically Adjusted Book per Share for the fiscal year that ended in Jun. 2025 was A$1.29. The a2 Milk Co's Cyclically Adjusted PB Ratio of today is 5.77.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of The a2 Milk Co was 159.25. The lowest was 4.02. And the median was 13.29.


The a2 Milk Co  (ASX:A2M) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

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.

The a2 Milk Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=7.44/1.29
=5.77

* 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of The a2 Milk Co was 159.25. The lowest was 4.02. And the median was 13.29.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


The a2 Milk Co Cyclically Adjusted Book per Share Related Terms


The a2 Milk Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for The a2 Milk Co's Cyclically Adjusted Book per Share 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.

The a2 Milk Co Cyclically Adjusted Book per Share Chart

The a2 Milk Co Annual Data
Trend Jun16 Jun17 Jun18 Jun19 Jun20 Jun21 Jun22 Jun23 Jun24 Jun25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.55 0.73 0.91 1.09 1.29

The a2 Milk Co Semi-Annual Data
Jun16 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
Cyclically Adjusted Book per Share Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.00 1.09 0.00 1.29 0.00

ASX:A2M vs KHC, GIS: Cyclically Adjusted Book per Share Comparison

For the Packaged Foods subindustry, The a2 Milk Co'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.


The a2 Milk Co Cyclically Adjusted PB Ratio vs Consumer Packaged Goods Industry

For the Consumer Packaged Goods industry and Consumer Defensive sector, The a2 Milk Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where The a2 Milk Co's Cyclically Adjusted PB Ratio falls into.


ASX:A2M
82GF Score
The a2 Milk Co Ltd ASX:A2M
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

The a2 Milk Co Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and 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.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

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.

For example, The a2 Milk Co's adjusted Book Value per Share data for the fiscal year that ended in Jun. 2025 was:

Adj_Book=Book Value per Share /CPI of Jun. 2025 (Change)*Current CPI (Jun. 2025)
=1.858/133.5131*133.5131
=1.858

Current CPI (Jun. 2025) = 133.5131.

The a2 Milk Co Annual Data

Book Value per Share CPI Adj_Book
201606 0.178 100.480 0.237
201706 0.318 102.231 0.415
201806 0.705 103.764 0.907
201906 1.019 105.502 1.290
202006 1.432 107.035 1.786
202106 1.355 110.614 1.636
202206 1.435 118.690 1.614
202306 1.451 125.846 1.539
202406 1.620 130.037 1.663
202506 1.858 133.513 1.858

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of A$1.29 mean?
The a2 Milk Co (ASX:A2M) has a Cyclically Adjusted Book per Share of A$1.29 as of Dec. 2025. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on The a2 Milk Co and its competitors.
Is The a2 Milk Co's Cyclically Adjusted Book per Share too high?
The a2 Milk Co's current Cyclically Adjusted Book per Share is A$1.29. Overall, The a2 Milk Co has a GF Score™ of 82/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does The a2 Milk Co's Cyclically Adjusted Book per Share compare to KHC and GIS?
The a2 Milk Co's Cyclically Adjusted Book per Share of A$1.29 can be compared against companies in the Consumer Packaged Goods industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for a Consumer Packaged Goods company?
A good Cyclically Adjusted Book per Share depends on the Consumer Packaged Goods industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on The a2 Milk Co and its competitors. The a2 Milk Co's current Cyclically Adjusted Book per Share is A$1.29. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is The a2 Milk Co stock overvalued right now?
Based on GuruFocus' analysis, The a2 Milk Co (ASX:A2M) is currently considered Modestly Overvalued. The stock's GF Value™ is A$6.66, compared to a current price of A$7.44 — trading 11.7% above its estimated fair value. The current Cyclically Adjusted Book per Share is A$1.29. The a2 Milk Co's overall GF Score™ is 82/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For The a2 Milk Co (ASX:A2M), the current Cyclically Adjusted Book per Share is A$1.29 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 The a2 Milk Co (ASX:A2M) Overvalued in 2026?

Based on GuruFocus' analysis, The a2 Milk Co stock appears to be overvalued. The current stock price of A$7.44 is trading 11.7% above its estimated GF Value™ of A$6.66. GuruFocus considers The a2 Milk Co to be Modestly Overvalued.

Key valuation signals for ASX:A2M:

  • Cyclically Adjusted Book per Share: A$1.29
  • GF Value™: A$6.66 vs. price of A$7.44 (11.7% above fair value)
  • GF Score™: 82/100 with 3 warning signs

No single metric tells the full story. See the ASX:A2M stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


The a2 Milk Co Business Description

Address 51 Shortland Street, Level 10, Auckland, NTL, NZL, 1010
A2 Milk is a New Zealand licensor and marketer of fresh milk, infant formula, and other dairy products that lack the A1 beta-casein protein. The firm was founded in 2000 by Corran McLachlan, who developed a genetic test to determine which proteins a cow produces in its milk, and business partner Howard Paterson. The company has been through a tumultuous history of receivership, legal battles, and strategic shifts, but emerged in its current structure in 2006 and listed publicly in March 2013.
82GF Score

Get the complete analysis for ASX:A2M

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

A$7.44
Price
A$6.66
GF Value