Semtech (STU:SM2) E10: €-1.13 (As of Apr. 2026)

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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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.

STU:SM2 Semtech Corp STU:SM2
71 GF Score
Price €115.75
GF Value €33.62
Valuation Significantly Overvalued
! 5 Warning Signs
View Full Analysis

What is Semtech E10?

Semtech STU:SM2 -2.16% 71 E10 is €-1.13 as of Apr. 2026. GuruFocus rates STU:SM2 with a GF Score™ of 71/100 and a GF Value™ of €33.62 (Significantly Overvalued). The stock has 5 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.

Semtech's adjusted earnings per share data for the three months ended in Apr. 2026 was €0.231. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €-1.13 for the trailing ten years ended in Apr. 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 Semtech was 36.50% per year. The lowest was -22.50% per year. And the median was 5.00% per year.

As of today (2026-07-14), Semtech's current stock price is €115.75. Semtech's E10 for the quarter that ended in Apr. 2026 was €-1.13. Semtech's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Semtech was 219.02. The lowest was 38.22. And the median was 115.78.


Semtech  (STU:SM2) 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 Semtech was 219.02. The lowest was 38.22. And the median was 115.78.


Be Aware

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


Semtech E10 Related Terms


Semtech E10 Historical Data

* Premium members only.

The historical data trend for Semtech'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.

Semtech E10 Chart

Semtech Annual Data
Trend Jan17 Jan18 Jan19 Jan20 Jan21 Jan22 Jan23 Jan24 Jan25 Jan26
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.39 0.46 -0.80 -1.15 -1.11

Semtech Quarterly Data
Jul21 Oct21 Jan22 Apr22 Jul22 Oct22 Jan23 Apr23 Jul23 Oct23 Jan24 Apr24 Jul24 Oct24 Jan25 Apr25 Jul25 Oct25 Jan26 Apr26
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 -1.05 -1.14 -1.10 -1.11 -1.13

STU:SM2 vs RMBS, ALGM, SIMO: E10 Comparison

For the Semiconductors subindustry, Semtech'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.


Semtech Shiller PE Ratio vs Semiconductors Industry

For the Semiconductors industry and Technology sector, Semtech's Shiller PE Ratio distribution charts can be found below:

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


STU:SM2
71GF Score
Semtech Corp STU:SM2
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Semtech 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, Semtech's adjusted earnings per share data for the three months ended in Apr. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Apr. 2026 (Change)*Current CPI (Apr. 2026)
=0.231/333.0200*333.0200
=0.231

Current CPI (Apr. 2026) = 333.0200.

Semtech Quarterly Data

per share eps CPI Adj_EPS
201607 0.127 240.628 0.176
201610 0.418 241.729 0.576
201701 0.113 242.839 0.155
201704 0.168 244.524 0.229
201707 0.165 244.786 0.224
201710 0.170 246.663 0.230
201801 -0.016 247.867 -0.021
201804 0.147 250.546 0.195
201807 0.317 252.006 0.419
201810 0.157 252.885 0.207
201901 0.175 251.712 0.232
201904 0.169 255.548 0.220
201907 0.027 256.571 0.035
201910 0.190 257.346 0.246
202001 0.036 257.971 0.046
202004 0.138 256.389 0.179
202007 0.209 259.101 0.269
202010 0.238 260.388 0.304
202101 0.197 261.582 0.251
202104 0.301 267.054 0.375
202107 0.423 273.003 0.516
202110 0.457 276.589 0.550
202201 0.469 281.148 0.556
202204 0.546 289.109 0.629
202207 0.796 296.276 0.895
202210 0.365 298.012 0.408
202301 -0.742 299.170 -0.826
202304 -0.420 303.363 -0.461
202307 -5.397 305.691 -5.879
202310 -0.568 307.671 -0.615
202401 -9.189 308.417 -9.922
202404 -0.336 313.548 -0.357
202407 -2.406 314.540 -2.547
202410 -0.092 315.664 -0.097
202501 0.415 317.671 0.435
202504 0.196 320.795 0.203
202507 -0.266 323.048 -0.274
202510 -0.026 0.000
202601 -0.272 325.252 -0.278
202604 0.231 333.020 0.231

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 €-1.13 mean?
Semtech (STU:SM2) has a E10 of €-1.13 as of Apr. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Semtech and its competitors.
Is Semtech's E10 too high?
Semtech's current E10 is €-1.13. Overall, Semtech has a GF Score™ of 71/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Semtech's E10 compare to RMBS and ALGM?
Semtech's E10 of €-1.13 can be compared against companies in the Semiconductors 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 Semiconductors company?
A good E10 depends on the Semiconductors 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 Semtech and its competitors. Semtech's current E10 is €-1.13. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Semtech stock overvalued right now?
Based on GuruFocus' analysis, Semtech (STU:SM2) is currently considered Significantly Overvalued. The stock's GF Value™ is €33.62, compared to a current price of €115.75 — trading 244.3% above its estimated fair value. The current E10 is €-1.13. Semtech's overall GF Score™ is 71/100 with 5 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 Semtech (STU:SM2), the current E10 is €-1.13 as of Apr. 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 Semtech (STU:SM2) Overvalued in 2026?

Based on GuruFocus' analysis, Semtech stock appears to be overvalued. The current stock price of €115.75 is trading 244.3% above its estimated GF Value™ of €33.62. GuruFocus considers Semtech to be Significantly Overvalued.

Key valuation signals for STU:SM2:

  • E10: €-1.13
  • GF Value™: €33.62 vs. price of €115.75 (244.3% above fair value)
  • GF Score™: 71/100 with 5 warning signs

No single metric tells the full story. See the STU:SM2 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Semtech Business Description

Address 200 Flynn Road, Camarillo, CA, USA, 93012-8790
Semtech Corp is a provider of high-performance semiconductors powering data center networking, Internet of Things ("IoT") connectivity, and cellular infrastructure solutions. The company designs, develops, manufactures, and markets a diverse portfolio of products for commercial applications, addressing the infrastructure, high-end consumer, and industrial end markets. The company operates in four reportable segments: Signal Integrity, Analog Mixed Signal and Wireless, IoT Systems, and Connected Services. The majority of the company's revenue is earned through the Analog Mixed Signal and Wireless segment. Geographically, the majority of the company's revenue is earned from the Asia Pacific region; the company also operates in North America and Europe.
71GF Score

Get the complete analysis for STU:SM2

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

€115.75
Price
€33.62
GF Value