TRLEF (Dune Oil) Shiller PE Ratio: (As of Sep. 11, 2026)

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TRLEF Dune Oil Corp TRLEF
17 GF Score
Price $0.12
GF Value $0.02
Valuation Significantly Overvalued
! 4 Warning Signs
View Full Analysis

What is Dune Oil Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Dune Oil  (OTCPK:TRLEF) 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.


Dune Oil Shiller PE Ratio Related Terms


Dune Oil Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Dune 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.

Dune Oil Shiller PE Ratio Chart

Dune Oil Annual Data
Trend Dec15 Dec16 Dec17 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

Dune Oil 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 0.00 0.00 0.00 0.00 0.00

TRLEF vs COP, EOG, OXY: Shiller PE Ratio Comparison

For the Oil & Gas E&P subindustry, Dune 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.


Dune Oil Shiller PE Ratio vs Oil & Gas Industry

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

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


TRLEF
17GF Score
Dune Oil Corp TRLEF
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Dune 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.

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

For example, Dune 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)
=-0.01/133.5265*133.5265
=-0.010

Current CPI (Jun. 2026) = 133.5265.

Dune Oil Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201503 -0.250 99.789 -0.335
201506 -0.100 100.500 -0.133
201509 -0.031 100.421 -0.041
201512 -0.250 99.947 -0.334
201603 -0.087 101.054 -0.115
201606 -0.054 102.002 -0.071
201609 -1.750 101.765 -2.296
201612 0.000 101.449 0.000
201703 -0.250 102.634 -0.325
201706 -0.500 103.029 -0.648
201709 -0.250 103.345 -0.323
201712 -0.250 103.345 -0.323
201803 -0.250 105.004 -0.318
201912 0.000 107.769 0.000
202003 -0.122 107.927 -0.151
202006 -0.250 108.401 -0.308
202009 -0.250 108.164 -0.309
202012 -0.250 108.559 -0.307
202103 -1.750 110.298 -2.119
202106 0.250 111.720 0.299
202109 1.000 112.905 1.183
202112 -0.500 113.774 -0.587
202203 -0.250 117.646 -0.284
202206 0.004 120.806 0.004
202209 -0.150 120.648 -0.166
202212 -0.150 120.964 -0.166
202303 0.150 122.702 0.163
202306 -0.150 124.203 -0.161
202309 0.450 125.230 0.480
202312 -0.450 125.072 -0.480
202403 0.050 126.258 0.053
202406 0.000 127.522 0.000
202409 -0.050 127.285 -0.052
202412 -0.320 127.364 -0.335
202503 0.070 129.181 0.072
202506 -0.020 129.892 -0.021
202509 -0.100 130.287 -0.102
202512 -1.250 130.366 -1.280
202603 0.140 132.262 0.141
202606 -0.010 133.527 -0.010

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 Dune Oil (TRLEF) Overvalued in 2026?

Based on GuruFocus' analysis, Dune Oil stock appears to be overvalued. The current stock price of $0.12 is trading 508.3% above its estimated GF Value™ of $0.02. GuruFocus considers Dune Oil to be Significantly Overvalued.

Key valuation signals for TRLEF:

  • Shiller PE Ratio:
  • GF Value™: $0.02 vs. price of $0.12 (508.3% above fair value)
  • GF Score™: 17/100 with 4 warning signs

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


Dune Oil Business Description

Industry EnergyOil & Gas
Other Exchanges Z62:GermanyTCF:Canada
Address 838 West Hastings Street, Suite 700, Vancouver, BC, CAN, V6C 0A6
Trillion Energy International Inc is an oil and gas exploration and production company. The company has multiple assets throughout Canada, Turkey and Bulgaria. The segments of the company are bifurcated as Oil segment and Gas segment. It derives maximum revenue from Oil segment. Geographically, the company operates in Canada, Turkey, and Bulgaria; and derives a majority of its revenue from Turkey. The project portfolio of the company includes M47 Oil Exploration Block.
17GF Score

Get the complete analysis for TRLEF

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

$0.12
Price
$0.02
GF Value