QuinStreet (FRA:5Q8) E10: € (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.

FRA:5Q8 QuinStreet Inc FRA:5Q8
75 GF Score
Price €15.30
GF Value €19.46
Valuation Modestly Undervalued
! 2 Warning Signs
View Full Analysis

What is QuinStreet E10?

QuinStreet FRA:5Q8 -4.38% 75 E10 is € as of Jun. 2026. GuruFocus rates FRA:5Q8 with a GF Score™ of 75/100 and a GF Value™ of €19.46 (Modestly Undervalued). The stock has 2 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.

QuinStreet's adjusted earnings per share data for the three months ended in Jun. 2026 was €0.284. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is for the trailing ten years ended in Jun. 2026.

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 QuinStreet was 28.30% per year. The lowest was -22.70% per year. And the median was -1.90% per year.

As of today (2026-09-21), QuinStreet's current stock price is €15.30. QuinStreet's E10 for the quarter that ended in Jun. 2026 was . QuinStreet's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of QuinStreet was 509.00. The lowest was 70.47. And the median was 93.67.


QuinStreet  (FRA:5Q8) 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 QuinStreet was 509.00. The lowest was 70.47. And the median was 93.67.


Be Aware

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


QuinStreet E10 Related Terms


QuinStreet E10 Historical Data

* Premium members only.

The historical data trend for QuinStreet'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.

QuinStreet E10 Chart

QuinStreet Annual Data
Trend Jun17 Jun18 Jun19 Jun20 Jun21 Jun22 Jun23 Jun24 Jun25 Jun26
E10
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QuinStreet Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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FRA:5Q8 vs CCO, CRTO, EVC: E10 Comparison

For the Advertising Agencies subindustry, QuinStreet'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.


QuinStreet Shiller PE Ratio vs Media - Diversified Industry

For the Media - Diversified industry and Communication Services sector, QuinStreet's Shiller PE Ratio distribution charts can be found below:

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


FRA:5Q8
75GF Score
QuinStreet Inc FRA:5Q8
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

QuinStreet 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, QuinStreet'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)
=0.2837/333.9520*333.9520
=0.284

Current CPI (Jun. 2026) = 333.9520.

QuinStreet Quarterly Data

per share eps CPI Adj_EPS
201609 -0.072 241.428 -0.099
201612 -0.158 241.432 -0.218
201703 0.009 243.801 0.013
201706 -0.027 244.955 -0.037
201709 0.026 246.819 0.035
201712 0.034 246.524 0.046
201803 0.114 249.554 0.152
201806 0.084 251.989 0.111
201809 0.087 252.439 0.115
201812 0.879 251.233 1.168
201903 0.016 254.202 0.021
201906 0.057 256.143 0.075
201909 0.019 256.759 0.025
201912 0.026 256.974 0.034
202003 0.236 258.115 0.306
202006 0.026 257.797 0.033
202009 0.232 260.280 0.297
202012 0.007 260.474 0.009
202103 0.075 264.877 0.095
202106 0.057 271.696 0.069
202109 0.047 274.310 0.057
202112 -0.091 278.802 -0.108
202203 0.036 287.504 0.042
202206 -0.085 296.311 -0.096
202209 -0.084 296.808 -0.095
202212 -0.146 296.797 -0.164
202303 -0.008 301.836 -0.009
202306 -0.948 305.109 -1.037
202309 -0.178 307.789 -0.193
202312 -0.196 306.746 -0.214
202403 -0.118 312.332 -0.126
202406 -0.036 314.175 -0.039
202409 -0.022 315.301 -0.024
202412 -0.026 315.605 -0.027
202503 0.072 319.799 0.075
202506 0.049 322.561 0.050
202509 0.066 324.800 0.068
202512 0.745 324.054 0.768
202603 0.108 330.213 0.110
202606 0.284 333.952 0.284

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 € mean?
QuinStreet (FRA:5Q8) has a E10 of € as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on QuinStreet and its competitors.
Is QuinStreet's E10 too high?
QuinStreet's current E10 is €. Overall, QuinStreet has a GF Score™ of 75/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does QuinStreet's E10 compare to CCO and CRTO?
QuinStreet's E10 of € can be compared against companies in the Media - Diversified 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 Media - Diversified company?
A good E10 depends on the Media - Diversified 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 QuinStreet and its competitors. QuinStreet's current E10 is €. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is QuinStreet stock overvalued right now?
Based on GuruFocus' analysis, QuinStreet (FRA:5Q8) is currently considered Modestly Undervalued. The stock's GF Value™ is €19.46, compared to a current price of €15.30 — trading 21.4% below its estimated fair value. The current E10 is €. QuinStreet's overall GF Score™ is 75/100 with 2 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 QuinStreet (FRA:5Q8), the current E10 is € 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 QuinStreet (FRA:5Q8) Overvalued in 2026?

Based on GuruFocus' analysis, QuinStreet stock appears to be undervalued. The current stock price of €15.30 is trading 21.4% below its estimated GF Value™ of €19.46. GuruFocus considers QuinStreet to be Modestly Undervalued.

Key valuation signals for FRA:5Q8:

  • E10:
  • GF Value™: €19.46 vs. price of €15.30 (21.4% below fair value)
  • GF Score™: 75/100 with 2 warning signs

No single metric tells the full story. See the FRA:5Q8 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


QuinStreet Business Description

Other Exchanges QNST:USA
Address 950 Tower Lane, 12th Floor, Foster City, CA, USA, 94404
QuinStreet Inc focuses on marketplaces and technologies for the financial services and home services industries. It delivers measurable and cost-effective marketing results to its clients, in the form of qualified inquiries such as clicks, leads, calls, applications, or customers. It generates revenue by delivering measurable online marketing results to the clients. Its products and services are Customer Acquisition, QuinStreet Rating Platform (QRP), and CloudControlMedia. Geographically, it operates in United States and Internationally, of which maximum revenue is derived from United States.
75GF Score

Get the complete analysis for FRA:5Q8

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

€15.30
Price
€19.46
GF Value