Decimus Oil (TSXV:WCSB) Shiller PE Ratio: (As of Sep. 22, 2026)

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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Charlie Tian
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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.

TSXV:WCSB Decimus Oil Corp TSXV:WCSB
26 GF Score
Price C$0.11
GF Value C$0.07
Valuation Significantly Overvalued
! 6 Warning Signs
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What is Decimus Oil Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Decimus Oil  (TSXV:WCSB) 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.


Decimus Oil Shiller PE Ratio Related Terms


Decimus Oil Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Decimus Oil'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.

Decimus Oil Shiller PE Ratio Chart

Decimus Oil Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shiller PE Ratio
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Decimus Oil Quarterly Data
Jun21 Sep21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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TSXV:WCSB vs COP, EOG, OXY: Shiller PE Ratio Comparison

For the Oil & Gas E&P subindustry, Decimus Oil'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.


Decimus Oil Shiller PE Ratio vs Oil & Gas Industry

For the Oil & Gas industry and Energy sector, Decimus Oil's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Decimus Oil's Shiller PE Ratio falls into.


TSXV:WCSB
26GF Score
Decimus Oil Corp TSXV:WCSB
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Decimus Oil 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.

Decimus Oil's E10 for the quarter that ended in Jun. 2026 is calculated as:

For example, Decimus Oil'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)
=-0.0114/133.5265*133.5265
=-0.011

Current CPI (Jun. 2026) = 133.5265.

Decimus Oil Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201606 0.002 102.002 0.002
201609 -0.002 101.765 -0.003
201612 -0.010 101.449 -0.013
201703 -0.004 102.634 -0.005
201706 -0.010 103.029 -0.013
201709 0.010 103.345 0.013
201712 -0.038 103.345 -0.049
201803 -0.011 105.004 -0.014
201806 -0.013 105.557 -0.017
201809 -0.011 105.636 -0.013
201812 -0.004 105.399 -0.005
201903 -0.005 106.979 -0.006
201906 -0.004 107.690 -0.005
201909 -0.012 107.611 -0.015
201912 -0.029 107.769 -0.036
202003 0.001 107.927 0.001
202006 -0.003 108.401 -0.004
202009 -0.008 108.164 -0.010
202012 -0.003 108.559 -0.003
202103 -0.004 110.298 -0.005
202106 -0.000 111.720 -0.000
202109 -0.000 112.905 -0.000
202203 -0.003 117.646 -0.003
202206 0.005 120.806 0.006
202209 -0.007 120.648 -0.008
202212 -0.063 120.964 -0.069
202303 -0.007 122.702 -0.007
202306 -0.012 124.203 -0.013
202309 -0.005 125.230 -0.005
202312 -0.012 125.072 -0.013
202403 -0.006 126.258 -0.006
202406 -0.006 127.522 -0.006
202409 -0.006 127.285 -0.006
202412 -0.021 127.364 -0.022
202503 -0.006 129.181 -0.006
202506 -0.009 129.892 -0.009
202509 -0.009 130.287 -0.009
202512 0.006 130.366 0.007
202603 -0.006 132.262 -0.006
202606 -0.011 133.527 -0.011

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 Decimus Oil (TSXV:WCSB) Overvalued in 2026?

Based on GuruFocus' analysis, Decimus Oil stock appears to be overvalued. The current stock price of C$0.11 is trading 57.1% above its estimated GF Value™ of C$0.07. GuruFocus considers Decimus Oil to be Significantly Overvalued.

Key valuation signals for TSXV:WCSB:

  • Shiller PE Ratio:
  • GF Value™: C$0.07 vs. price of C$0.11 (57.1% above fair value)
  • GF Score™: 26/100 with 6 warning signs

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


Decimus Oil Business Description

Industry EnergyOil & Gas
Address No. 188 15th Avenue S.W, No. 2003, Calgary, AB, CAN, T2R 1S4
Decimus Oil Corp is engaged in the acquisition, development and production of oil and gas in the Western Canadian Sedimentary Basin. The company is focused on Mannville development in Southern Alberta where it's advancing its low-risk acquisition plans, paired with deploying modern completion techniques to expose its underexploited drilling opportunities to unlock resource in place.
26GF Score

Get the complete analysis for TSXV:WCSB

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

C$0.11
Price
C$0.07
GF Value