Impax Asset Management Group (LSE:IPX) Shiller PE Ratio: (As of Sep. 22, 2026)

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LSE:IPX Impax Asset Management Group PLC LSE:IPX
66 GF Score
Price £1.09
GF Value £2.28
Valuation Significantly Undervalued
! 3 Warning Signs
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What is Impax Asset Management Group Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Impax Asset Management Group  (LSE:IPX) Shiller PE Ratio Explanation

Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.

Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.


Be Aware

Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.


Impax Asset Management Group Shiller PE Ratio Related Terms


Impax Asset Management Group Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Impax Asset Management Group's Shiller PE 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.

Impax Asset Management Group Shiller PE Ratio Chart

Impax Asset Management Group Annual Data
Trend Sep16 Sep17 Sep18 Sep19 Sep20 Sep21 Sep22 Sep23 Sep24 Sep25
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 147.69 38.89 26.97 18.90 8.72

Impax Asset Management Group Semi-Annual Data
Sep16 Mar17 Sep17 Mar18 Sep18 Mar19 Sep19 Mar20 Sep20 Mar21 Sep21 Mar22 Sep22 Mar23 Sep23 Mar24 Sep24 Mar25 Sep25 Mar26
Shiller PE Ratio 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 24.97 18.81 8.48 8.64 5.37

LSE:IPX vs BLK, BX, KKR: Shiller PE Ratio Comparison

For the Asset Management subindustry, Impax Asset Management Group's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.


Impax Asset Management Group Shiller PE Ratio vs Asset Management Industry

For the Asset Management industry and Financial Services sector, Impax Asset Management Group's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Impax Asset Management Group's Shiller PE Ratio falls into.


LSE:IPX
66GF Score
Impax Asset Management Group PLC LSE:IPX
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Impax Asset Management Group Shiller PE Ratio Calculation

For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

Impax Asset Management Group's E10 for the fiscal year that ended in Sep25 is calculated as:

For example, Impax Asset Management Group's adjusted earnings per share data for the fiscal year that ended in Sep25 was:

Adj_EPS=Earnings per Share (Diluted)/CPI of Sep25 (Change)*Current CPI (Sep25)
=0.158/138.9000*138.9000
=0.158

Current CPI (Sep25) = 138.9000.

Impax Asset Management Group Annual Data

Earnings per Share (Diluted) CPI Adj_EPS
201609 0.037 101.500 0.050
201709 0.062 104.300 0.083
201809 0.089 106.600 0.116
201909 0.121 108.400 0.155
202009 0.105 109.200 0.134
202109 0.303 112.400 0.375
202209 0.447 122.300 0.507
202309 0.298 130.100 0.318
202409 0.282 133.500 0.294
202509 0.158 138.900 0.158

Add all the adjusted EPS together and divide 10 will get our E10.

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.

Is Impax Asset Management Group (LSE:IPX) Overvalued in 2026?

Based on GuruFocus' analysis, Impax Asset Management Group stock appears to be undervalued. The current stock price of £1.09 is trading 52.2% below its estimated GF Value™ of £2.28. GuruFocus considers Impax Asset Management Group to be Significantly Undervalued.

Key valuation signals for LSE:IPX:

  • Shiller PE Ratio:
  • GF Value™: £2.28 vs. price of £1.09 (52.2% below fair value)
  • GF Score™: 66/100 with 3 warning signs

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


Impax Asset Management Group Business Description

Other Exchanges IPXAF:USAIPXl:UKLW4:Germany
Address 30 Panton Street, 7th Floor, London, GBR, SW1Y 4AJ
Impax Asset Management Group PLC is an investment firm. It operates in both listed and private markets strategies, investing in the opportunities arising from the transition to a more sustainable economy. The Group is managed on an integrated basis and there is one reportable segment The company offers listed and private equity strategies to institutional clients, with assets under management and advice. Geographically, it derives a majority of revenue from North America and also has a presence in UK; France; Luxembourg; Netherlands; Ireland; Australia and other regions.
66GF Score

Get the complete analysis for LSE:IPX

Shiller PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

£1.09
Price
£2.28
GF Value