Syn hf (OISE:SYN) E10: kr1.34 (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.

OISE:SYN Syn hf OISE:SYN
51 GF Score
Price kr19.60
GF Value kr30.43
Valuation Possible Value Trap
! 6 Warning Signs
View Full Analysis

What is Syn hf E10?

Syn hf OISE:SYN -1.01% 51 E10 is kr1.34 as of Jun. 2026. GuruFocus rates OISE:SYN with a GF Score™ of 51/100 and a GF Value™ of kr30.43 (Possible Value Trap). The stock has 6 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.

Syn hf's adjusted earnings per share data for the three months ended in Jun. 2026 was kr-0.870. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is kr1.34 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Syn hf's average E10 Growth Rate was -36.50% per year. During the past 3 years, the average E10 Growth Rate was -11.10% 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 Syn hf was 7.00% per year. The lowest was -11.10% per year. And the median was -2.05% per year.

As of today (2026-09-10), Syn hf's current stock price is kr19.60. Syn hf's E10 for the quarter that ended in Jun. 2026 was kr1.34. Syn hf's Shiller PE Ratio of today is 14.63.

During the past 13 years, the highest Shiller PE Ratio of Syn hf was 50.00. The lowest was 8.59. And the median was 14.63.


Syn hf  (OISE:SYN) 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.

Syn hf's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=19.60/1.34
=14.63

* 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.

During the past 13 years, the highest Shiller P/E Ratio of Syn hf was 50.00. The lowest was 8.59. And the median was 14.63.


Be Aware

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


Syn hf E10 Related Terms


Syn hf E10 Historical Data

* Premium members only.

The historical data trend for Syn hf'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.

Syn hf E10 Chart

Syn hf 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 2.03 2.48 3.42 2.49 1.74

Syn hf 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 2.11 1.79 1.74 1.54 1.34

OISE:SYN vs VZ, TMUS, T: E10 Comparison

For the Telecom Services subindustry, Syn hf'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.


Syn hf Shiller PE Ratio vs Telecommunication Services Industry

For the Telecommunication Services industry and Communication Services sector, Syn hf's Shiller PE Ratio distribution charts can be found below:

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


OISE:SYN
51GF Score
Syn hf OISE:SYN
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Syn hf 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, Syn hf'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)
=-0.87/161.3100*161.3100
=-0.870

Current CPI (Jun. 2026) = 161.3100.

Syn hf Quarterly Data

per share eps CPI Adj_EPS
201609 1.500 102.457 2.362
201612 0.644 102.562 1.013
201703 0.800 102.768 1.256
201706 0.900 103.496 1.403
201709 1.100 103.871 1.708
201712 1.300 104.481 2.007
201803 0.170 105.600 0.260
201806 -0.030 106.206 -0.046
201809 0.700 106.727 1.058
201812 0.660 108.388 0.982
201903 2.260 108.702 3.354
201906 -0.730 109.758 -1.073
201909 -0.250 109.922 -0.367
201912 -7.200 110.588 -10.502
202003 -1.180 111.019 -1.715
202006 -0.210 112.667 -0.301
202009 0.030 113.772 0.043
202012 -0.040 114.542 -0.056
202103 -0.780 115.833 -1.086
202106 -0.420 117.451 -0.577
202109 0.640 118.723 0.870
202112 7.678 120.398 10.287
202203 0.770 123.555 1.005
202206 0.120 127.809 0.151
202209 0.710 129.810 0.882
202212 1.800 131.901 2.201
202303 0.790 135.674 0.939
202306 1.070 139.150 1.240
202309 1.300 140.147 1.496
202312 5.330 142.125 6.049
202403 -0.620 144.910 -0.690
202406 -0.770 147.267 -0.843
202409 0.110 147.722 0.120
202412 -4.821 148.871 -5.224
202503 -1.390 150.393 -1.491
202506 -0.700 153.367 -0.736
202509 -0.960 153.800 -1.007
202512 0.493 155.560 0.511
202603 -1.175 158.510 -1.196
202606 -0.870 161.310 -0.870

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 kr1.34 mean?
Syn hf (OISE:SYN) has a E10 of kr1.34 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Syn hf and its competitors.
Is Syn hf's E10 too high?
Syn hf's current E10 is kr1.34. Overall, Syn hf has a GF Score™ of 51/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Syn hf's E10 compare to VZ and TMUS?
Syn hf's E10 of kr1.34 can be compared against companies in the Telecommunication Services 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 Telecommunication Services company?
A good E10 depends on the Telecommunication Services 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 Syn hf and its competitors. Syn hf's current E10 is kr1.34. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Syn hf stock overvalued right now?
Based on GuruFocus' analysis, Syn hf (OISE:SYN) is currently considered Possible Value Trap. The stock's GF Value™ is kr30.43, compared to a current price of kr19.60 — trading 35.6% below its estimated fair value. The current E10 is kr1.34. Syn hf's overall GF Score™ is 51/100 with 6 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 Syn hf (OISE:SYN), the current E10 is kr1.34 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 Syn hf (OISE:SYN) Overvalued in 2026?

Based on GuruFocus' analysis, Syn hf stock appears to be undervalued. The current stock price of kr19.60 is trading 35.6% below its estimated GF Value™ of kr30.43. GuruFocus considers Syn hf to be Possible Value Trap.

Key valuation signals for OISE:SYN:

  • E10: kr1.34
  • GF Value™: kr30.43 vs. price of kr19.60 (35.6% below fair value)
  • GF Score™: 51/100 with 6 warning signs

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


Syn hf Business Description

Address Suourlandsbraut 8, Reykjavik, ISL, 108
Syn hf is an Iceland based Telecommunication and Media company. The company generates revenue from sales of Fixed line, Hosting and operating solutions, Retail sale and Other revenue which includes services revenue.
51GF Score

Get the complete analysis for OISE:SYN

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

kr19.60
Price
kr30.43
GF Value