NN (NNBR) E10: $-1.16 (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.

NNBR NN Inc NNBR
55 GF Score
Price $3.68
GF Value $2.62
Valuation Significantly Overvalued
! 8 Warning Signs
View Full Analysis

What is NN E10?

NN NNBR -1.60% 55 E10 is $-1.16 as of Jun. 2026. GuruFocus rates NNBR with a GF Score™ of 55/100 and a GF Value™ of $2.62 (Significantly Overvalued). The stock has 8 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.

NN's adjusted earnings per share data for the three months ended in Jun. 2026 was $-0.130. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $-1.16 for the trailing ten years ended in Jun. 2026.

During the past 3 years, the average E10 Growth Rate was -29.30% 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 NN was 44.20% per year. The lowest was -69.60% per year. And the median was -6.70% per year.

As of today (2026-09-09), NN's current stock price is $3.68. NN's E10 for the quarter that ended in Jun. 2026 was $-1.16. NN's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of NN was 396.50. The lowest was 6.18. And the median was 42.26.


NN  (NAS:NNBR) 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 NN was 396.50. The lowest was 6.18. And the median was 42.26.


Be Aware

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


NN E10 Related Terms


NN E10 Historical Data

* Premium members only.

The historical data trend for NN'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.

NN E10 Chart

NN 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 -0.22 -0.50 -0.78 -0.97 -1.08

NN 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 -1.14 -1.19 -1.08 -1.12 -1.16

NNBR vs AIAI, RCMT, CFSU: E10 Comparison

For the Conglomerates subindustry, NN'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.


NN Shiller PE Ratio vs Conglomerates Industry

For the Conglomerates industry and Industrials sector, NN's Shiller PE Ratio distribution charts can be found below:

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


NNBR
55GF Score
NN Inc NNBR
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

NN 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, NN'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)
=-0.13/333.9520*333.9520
=-0.130

Current CPI (Jun. 2026) = 333.9520.

NN Quarterly Data

per share eps CPI Adj_EPS
201609 0.160 241.428 0.221
201612 0.120 241.432 0.166
201703 0.270 243.801 0.370
201706 -0.770 244.955 -1.050
201709 4.570 246.819 6.183
201712 1.969 246.524 2.667
201803 -0.220 249.554 -0.294
201806 -0.890 251.989 -1.179
201809 -0.480 252.439 -0.635
201812 -5.250 251.233 -6.979
201903 -0.470 254.202 -0.617
201906 -0.170 256.143 -0.222
201909 -0.140 256.759 -0.182
201912 -0.350 256.974 -0.455
202003 -5.960 258.115 -7.711
202006 -0.590 257.797 -0.764
202009 0.450 260.280 0.577
202012 3.410 260.474 4.372
202103 -0.460 264.877 -0.580
202106 -0.170 271.696 -0.209
202109 -0.130 274.310 -0.158
202112 -0.040 278.802 -0.048
202203 -0.130 287.504 -0.151
202206 -0.250 296.311 -0.282
202209 -0.110 296.808 -0.124
202212 -0.330 296.797 -0.371
202303 -0.290 301.836 -0.321
202306 -0.380 305.109 -0.416
202309 -0.180 307.789 -0.195
202312 -0.500 306.746 -0.544
202403 -0.340 312.332 -0.364
202406 -0.120 314.175 -0.128
202409 -0.130 315.301 -0.138
202412 -0.510 315.605 -0.540
202503 -0.230 319.799 -0.240
202506 -0.260 322.561 -0.269
202509 -0.230 324.800 -0.236
202512 -0.350 324.054 -0.361
202603 -0.250 330.213 -0.253
202606 -0.130 333.952 -0.130

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 $-1.16 mean?
NN (NNBR) has a E10 of $-1.16 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on NN and its competitors.
Is NN's E10 too high?
NN's current E10 is $-1.16. Overall, NN has a GF Score™ of 55/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does NN's E10 compare to AIAI and RCMT?
NN's E10 of $-1.16 can be compared against companies in the Conglomerates 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 a Conglomerates company?
A good E10 depends on the Conglomerates 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 NN and its competitors. NN's current E10 is $-1.16. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is NN stock overvalued right now?
Based on GuruFocus' analysis, NN (NNBR) is currently considered Significantly Overvalued. The stock's GF Value™ is $2.62, compared to a current price of $3.68 — trading 40.5% above its estimated fair value. The current E10 is $-1.16. NN's overall GF Score™ is 55/100 with 8 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 NN (NNBR), the current E10 is $-1.16 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 NN (NNBR) Overvalued in 2026?

Based on GuruFocus' analysis, NN stock appears to be overvalued. The current stock price of $3.68 is trading 40.5% above its estimated GF Value™ of $2.62. GuruFocus considers NN to be Significantly Overvalued.

Key valuation signals for NNBR:

  • E10: $-1.16
  • GF Value™: $2.62 vs. price of $3.68 (40.5% above fair value)
  • GF Score™: 55/100 with 8 warning signs

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


NN Business Description

Other Exchanges NN2:Germany
Address 6210 Ardrey Kell Road, Suite 120, Charlotte, NC, USA, 28277
NN Inc is a diversified industrial company that combines engineering and production capabilities with materials science expertise to design and manufacture high-precision components and solutions. The company operates through two segments: Mobile Solutions, which generates maximum revenue and focuses on the automotive, general industrial, and medical end markets, manufacturing tight-tolerance components used in battery electric, hybrid electric, and internal combustion engine vehicles, braking, transmissions, fuel systems, HVAC, and diesel systems; and Power Solutions, which focuses on the electrical, general industrial, automotive, medical, and aerospace and defense end markets and manufactures high-precision metal components, assemblies, contact assemblies, and precision stampings.
55GF Score

Get the complete analysis for NNBR

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

$3.68
Price
$2.62
GF Value