Alpha Pro Tech (FRA:APL) Shiller PE Ratio: (As of Sep. 21, 2026)

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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FRA:APL Alpha Pro Tech Ltd FRA:APL
72 GF Score
Price €4.38
GF Value €4.87
Valuation Modestly Undervalued
! 4 Warning Signs
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What is Alpha Pro Tech Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Alpha Pro Tech  (FRA:APL) 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.


Alpha Pro Tech Shiller PE Ratio Related Terms


Alpha Pro Tech Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Alpha Pro Tech'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.

Alpha Pro Tech Shiller PE Ratio Chart

Alpha Pro Tech Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 16.75 9.80 11.42 11.38 7.86

Alpha Pro Tech Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 8.72 8.67 7.83 8.10 9.98

FRA:APL vs INVE, SNTL, UUU: Shiller PE Ratio Comparison

For the Building Products & Equipment subindustry, Alpha Pro Tech'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.


Alpha Pro Tech Shiller PE Ratio vs Construction Industry

For the Construction industry and Industrials sector, Alpha Pro Tech's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Alpha Pro Tech's Shiller PE Ratio falls into.


FRA:APL
72GF Score
Alpha Pro Tech Ltd FRA:APL
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Alpha Pro Tech 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.

Alpha Pro Tech's E10 for the quarter that ended in Jun. 2026 is calculated as:

For example, Alpha Pro Tech's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS=Earnings per Share (Diluted)/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0.1518/133.5265*133.5265
=0.152

Current CPI (Jun. 2026) = 133.5265.

Alpha Pro Tech Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201609 0.054 101.765 0.071
201612 0.046 101.449 0.061
201703 0.038 102.634 0.049
201706 0.045 103.029 0.059
201709 0.060 103.345 0.077
201712 0.009 103.345 0.011
201803 0.033 105.004 0.041
201806 0.059 105.557 0.074
201809 0.096 105.636 0.121
201812 0.040 105.399 0.050
201903 0.080 106.979 0.099
201906 0.068 107.690 0.084
201909 0.030 107.611 0.037
201912 0.023 107.769 0.029
202003 0.355 107.927 0.439
202006 0.414 108.401 0.510
202009 0.495 108.164 0.611
202012 0.434 108.559 0.534
202103 0.225 110.298 0.273
202106 0.103 111.720 0.123
202109 0.048 112.905 0.057
202112 0.040 113.774 0.046
202203 0.103 117.646 0.117
202206 0.050 120.806 0.056
202209 0.039 120.648 0.044
202212 0.045 120.964 0.049
202303 0.042 122.702 0.046
202306 0.088 124.203 0.094
202309 0.112 125.230 0.119
202312 0.086 125.072 0.091
202403 0.047 126.258 0.049
202406 0.136 127.522 0.142
202409 0.070 127.285 0.074
202412 0.072 127.364 0.075
202503 0.054 129.181 0.056
202506 0.103 129.892 0.106
202509 0.080 130.287 0.082
202512 0.059 130.366 0.061
202603 0.058 132.262 0.059
202606 0.152 133.527 0.152

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 Alpha Pro Tech (FRA:APL) Overvalued in 2026?

Based on GuruFocus' analysis, Alpha Pro Tech stock appears to be undervalued. The current stock price of €4.38 is trading 10.1% below its estimated GF Value™ of €4.87. GuruFocus considers Alpha Pro Tech to be Modestly Undervalued.

Key valuation signals for FRA:APL:

  • Shiller PE Ratio:
  • GF Value™: €4.87 vs. price of €4.38 (10.1% below fair value)
  • GF Score™: 72/100 with 4 warning signs

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


Alpha Pro Tech Business Description

Other Exchanges APT:USAAPL:Germany
Address 53 Wellington Street East, Aurora, ON, CAN, L4G 1H6
Alpha Pro Tech Ltd is in the business of protecting people, products, and environments. It is developing, manufacturing, and marketing a line of disposable protective apparel and infection control products for the cleanroom, industrial, pharmaceutical, medical, and dental markets. It also manufactures a line of building supply construction weatherization products that are sold under the Alpha Pro Tech brand name. The Company operates through two business segments: Building Supply and Disposable Protective Apparel. Key revenue is generated from Building Supply, consisting of a line of construction supply weatherization products. The construction supply weatherization products consist of housewrap and synthetic roof underlayment, and synthetic roof underlayment accessories.
72GF Score

Get the complete analysis for FRA:APL

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

€4.38
Price
€4.87
GF Value