PTRC (Petro River Oil) E10: $-117.70 (As of Oct. 2019)


PTRC Petro River Oil Corp PTRC
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What is Petro River Oil E10?

Petro River Oil PTRC -95.00% 12 E10 is $-117.70 as of Oct. 2019. GuruFocus rates PTRC with a GF Score™ of 12/100.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

Petro River Oil's adjusted earnings per share data for the three months ended in Oct. 2019 was $0.040. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $-117.70 for the trailing ten years ended in Oct. 2019.

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 E10 growth rate using E10 data.

As of today (2026-06-26), Petro River Oil's current stock price is $2.0E-5. Petro River Oil's E10 for the quarter that ended in Oct. 2019 was $-117.70. Petro River Oil's Shiller PE Ratio of today is .


Petro River Oil  (OTCPK:PTRC) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, 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 P/E is also called PE10.

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


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


Petro River Oil E10 Related Terms


Petro River Oil E10 Historical Data

* Premium members only.

The historical data trend for Petro River Oil's E10 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.

Petro River Oil E10 Chart

Petro River Oil Annual Data
Trend Apr10 Apr11 Apr12 Apr13 Apr14 Apr15 Apr16 Apr17 Apr18 Apr19
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only -373.42 -365.96 -304.43 -249.85 -122.38

Petro River Oil Quarterly Data
Jan15 Apr15 Jul15 Oct15 Jan16 Apr16 Jul16 Oct16 Jan17 Apr17 Jul17 Oct17 Jan18 Apr18 Jul18 Oct18 Jan19 Apr19 Jul19 Oct19
E10 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 -191.79 -185.57 -122.38 -119.99 -117.70

PTRC vs LRDC, COIL, ALTX: E10 Comparison

For the Oil & Gas E&P subindustry, Petro River 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.


Petro River Oil Shiller PE Ratio vs Oil & Gas Industry

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

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


PTRC
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Petro River Oil Corp PTRC
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
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Petro River Oil E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

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

For example, Petro River Oil's adjusted earnings per share data for the three months ended in Oct. 2019 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Oct. 2019 (Change)*Current CPI (Oct. 2019)
=0.04/257.3460*257.3460
=0.040

Current CPI (Oct. 2019) = 257.3460.

Petro River Oil Quarterly Data

per share eps CPI Adj_EPS
201001 -18.725 216.687 -22.239
201004 -82.550 218.009 -97.445
201007 -14.000 218.011 -16.526
201010 28.000 218.711 32.946
201101 -94.000 220.223 -109.846
201104 -374.000 224.906 -427.945
201107 16.000 225.922 18.225
201110 -66.000 226.421 -75.014
201201 -12.000 226.665 -13.624
201204 -253.369 230.085 -283.389
201207 -0.281 229.104 -0.316
201210 0.000 231.317 0.000
201301 0.000 230.280 0.000
201304 0.000 232.531 0.000
201307 0.000 233.596 0.000
201310 0.000 233.546 0.000
201401 0.000 233.916 0.000
201404 -2.000 237.072 -2.171
201407 -0.321 238.250 -0.347
201410 -0.280 237.433 -0.303
201501 -0.260 233.707 -0.286
201504 -0.350 236.599 -0.381
201507 -0.160 238.654 -0.173
201510 0.740 237.838 0.801
201601 -2.370 236.916 -2.574
201604 -0.790 239.261 -0.850
201607 -0.090 240.628 -0.096
201610 -0.040 241.729 -0.043
201701 -0.040 242.839 -0.042
201704 -0.020 244.524 -0.021
201707 -0.060 244.786 -0.063
201710 -0.050 246.663 -0.052
201801 -0.970 247.867 -1.007
201804 -0.120 250.546 -0.123
201807 -0.020 252.006 -0.020
201810 -0.030 252.885 -0.031
201901 -0.370 251.712 -0.378
201904 -0.050 255.548 -0.050
201907 0.090 256.571 0.090
201910 0.040 257.346 0.040

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of $-117.70 mean?
Petro River Oil (PTRC) has a E10 of $-117.70 as of Oct. 2019. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Petro River Oil and its competitors.
Is Petro River Oil's E10 too high?
Petro River Oil's current E10 is $-117.70. Overall, Petro River Oil has a GF Score™ of 12/100, reflecting its overall financial health beyond just this single metric.
How does Petro River Oil's E10 compare to LRDC and COIL?
Petro River Oil's E10 of $-117.70 can be compared against companies in the Oil & Gas industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for an Oil & Gas company?
A good E10 depends on the Oil & Gas industry context. However, E10 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 E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Petro River Oil and its competitors. Petro River Oil's current E10 is $-117.70. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Petro River Oil stock overvalued right now?
Petro River Oil (PTRC) has a current E10 of $-117.70. The current E10 is $-117.70. Petro River Oil's overall GF Score™ is 12/100. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For Petro River Oil (PTRC), the current E10 is $-117.70 as of Oct. 2019. 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.

Petro River Oil Business Description

Industry EnergyOil & Gas
Address 55 5th Avenue, Suite 1702, New York, NY, USA, 10003
Petro River Oil Corp is an independent energy company focused on the exploration and development of conventional oil and gas assets. It has diversification across multiple projects, each with low initial capital expenditures and strong risk-reward characteristics. The company's strategy is to identify, acquire and develop conventional oil and gas assets. The company's activities are focused on the North American and European continents.
12GF Score

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