NOV (NOV) E10: $-3.31 (As of Jun. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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.

NOV NOV Inc NOV
79 GF Score
Price $19.65
GF Value $18.81
Valuation Fairly Valued
! 9 Warning Signs
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What is NOV E10?

NOV NOV -1.26% 79 E10 is $-3.31 as of Jun. 2026. GuruFocus rates NOV with a GF Score™ of 79/100 and a GF Value™ of $18.81 (Fairly Valued). The stock has 9 warning signs investors should review.

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.

NOV's adjusted earnings per share data for the three months ended in Jun. 2026 was $0.310. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $-3.31 for the trailing ten years ended in Jun. 2026.

During the past 3 years, the average E10 Growth Rate was -12.50% per year. During the past 5 years, the average E10 Growth Rate was -31.60% per year. 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.

During the past 13 years, the highest 3-Year average E10 Growth Rate of NOV was 38.60% per year. The lowest was -55.20% per year. And the median was 1.05% per year.

As of today (2026-08-10), NOV's current stock price is $19.65. NOV's E10 for the quarter that ended in Jun. 2026 was $-3.31. NOV's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of NOV was 87.41. The lowest was 8.40. And the median was 12.70.


NOV  (NYSE:NOV) 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.

During the past 13 years, the highest Shiller P/E Ratio of NOV was 87.41. The lowest was 8.40. And the median was 12.70.


Be Aware

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


NOV E10 Related Terms


NOV E10 Historical Data

* Premium members only.

The historical data trend for NOV'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.

NOV E10 Chart

NOV Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only -1.56 -2.37 -2.91 -3.61 -3.37

NOV Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 -3.84 -3.92 -3.37 -3.39 -3.31

NOV vs WFRD, AROC, KGS: E10 Comparison

For the Oil & Gas Equipment & Services subindustry, NOV'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.


NOV Shiller PE Ratio vs Oil & Gas Industry

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

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


NOV
79GF Score
NOV Inc NOV
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

NOV 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, NOV'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)
=0.31/333.9520*333.9520
=0.310

Current CPI (Jun. 2026) = 333.9520.

NOV Quarterly Data

per share eps CPI Adj_EPS
201609 -3.620 241.428 -5.007
201612 -1.900 241.432 -2.628
201703 -0.320 243.801 -0.438
201706 -0.200 244.955 -0.273
201709 -0.070 246.819 -0.095
201712 -0.040 246.524 -0.054
201803 -0.180 249.554 -0.241
201806 0.060 251.989 0.080
201809 0.003 252.439 0.004
201812 0.030 251.233 0.040
201903 -0.200 254.202 -0.263
201906 -14.110 256.143 -18.396
201909 -0.640 256.759 -0.832
201912 -1.010 256.974 -1.313
202003 -5.340 258.115 -6.909
202006 -0.240 257.797 -0.311
202009 -0.140 260.280 -0.180
202012 -0.900 260.474 -1.154
202103 -0.300 264.877 -0.378
202106 -0.070 271.696 -0.086
202109 -0.180 274.310 -0.219
202112 -0.100 278.802 -0.120
202203 -0.130 287.504 -0.151
202206 0.180 296.311 0.203
202209 0.080 296.808 0.090
202212 0.260 296.797 0.293
202303 0.320 301.836 0.354
202306 0.390 305.109 0.427
202309 0.290 307.789 0.315
202312 1.510 306.746 1.644
202403 0.300 312.332 0.321
202406 0.570 314.175 0.606
202409 0.330 315.301 0.350
202412 0.410 315.605 0.434
202503 0.190 319.799 0.198
202506 0.290 322.561 0.300
202509 0.110 324.800 0.113
202512 -0.210 324.054 -0.216
202603 0.050 330.213 0.051
202606 0.310 333.952 0.310

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 $-3.31 mean?
NOV (NOV) has a E10 of $-3.31 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on NOV and its competitors.
Is NOV's E10 too high?
NOV's current E10 is $-3.31. Overall, NOV has a GF Score™ of 79/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does NOV's E10 compare to WFRD and AROC?
NOV's E10 of $-3.31 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 NOV and its competitors. NOV's current E10 is $-3.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is NOV stock overvalued right now?
Based on GuruFocus' analysis, NOV (NOV) is currently considered Fairly Valued. The stock's GF Value™ is $18.81, compared to a current price of $19.65 — trading 4.5% above its estimated fair value. The current E10 is $-3.31. NOV's overall GF Score™ is 79/100 with 9 warning signs to review. 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 NOV (NOV), the current E10 is $-3.31 as of Jun. 2026. 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.

Is NOV (NOV) Overvalued in 2026?

Based on GuruFocus' analysis, NOV stock appears to be overvalued. The current stock price of $19.65 is trading 4.5% above its estimated GF Value™ of $18.81. GuruFocus considers NOV to be Fairly Valued.

Key valuation signals for NOV:

  • E10: $-3.31
  • GF Value™: $18.81 vs. price of $19.65 (4.5% above fair value)
  • GF Score™: 79/100 with 9 warning signs

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


NOV Business Description

Industry EnergyOil & Gas
Address 10353 Richmond Avenue, Houston, TX, USA, 77042-4103
NOV (formerly National Oilwell Varco) designs, manufactures, and sells a wide range of equipment and components supplying the oil and gas industry, including rig equipment, downhole tools, drill pipe, and well casing. NOV's customers include major integrated oil companies, national oil companies, independent oil and gas companies, and drilling contractors. Its operations are organized into two reportable segments: energy products and services and energy equipment. NOV operates on a global scale, with international markets contributing nearly two-thirds of its annual revenue.
79GF Score

Get the complete analysis for NOV

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$19.65
Price
$18.81
GF Value