ON Semiconductor (MEX:ON) Shiller PE Ratio: (As of Sep. 21, 2026)

Author: Vera Yuan Vera Yuan
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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.
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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.

MEX:ON ON Semiconductor Corp MEX:ON
74 GF Score
Price MXN1,184.40
GF Value MXN1,049.83
Valuation Modestly Overvalued
! 3 Warning Signs
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What is ON Semiconductor Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


ON Semiconductor  (MEX:ON) Shiller PE Ratio Explanation

Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.

Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.


Be Aware

Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.


ON Semiconductor Shiller PE Ratio Related Terms


ON Semiconductor Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for ON Semiconductor's Shiller PE Ratio 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.

ON Semiconductor Shiller PE Ratio Chart

ON Semiconductor Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 84.76 44.68 39.68 30.57 23.16

ON Semiconductor Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Shiller PE Ratio 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 23.59 22.15 23.13 25.10 36.41

MEX:ON vs GFS, MTSI, MCHP: Shiller PE Ratio Comparison

For the Semiconductors subindustry, ON Semiconductor'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.


ON Semiconductor Shiller PE Ratio vs Semiconductors Industry

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

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


MEX:ON
74GF Score
ON Semiconductor Corp MEX:ON
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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ON Semiconductor Shiller PE Ratio Calculation

For Shiller PE Ratio, 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 PE Ratio is also called PE10.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

ON Semiconductor's E10 for the quarter that ended in Jun. 2026 is calculated as:

For example, ON Semiconductor'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)
=9.7557/333.9520*333.9520
=9.756

Current CPI (Jun. 2026) = 333.9520.

ON Semiconductor Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201609 0.375 241.428 0.519
201612 5.159 241.432 7.136
201703 3.654 243.801 5.006
201706 4.090 244.955 5.576
201709 4.458 246.819 6.032
201712 23.401 246.524 31.699
201803 5.887 249.554 7.877
201806 6.783 251.989 8.989
201809 7.278 252.439 9.627
201812 7.816 251.233 10.390
201903 5.245 254.202 6.891
201906 4.662 256.143 6.078
201909 -2.874 256.759 -3.738
201912 2.601 256.974 3.380
202003 -0.684 258.115 -0.884
202006 -0.080 257.797 -0.103
202009 8.487 260.280 10.889
202012 4.239 260.474 5.435
202103 4.109 264.877 5.180
202106 8.310 271.696 10.214
202109 14.076 274.310 17.137
202112 19.853 278.802 23.780
202203 24.219 287.504 28.132
202206 20.469 296.311 23.069
202209 14.094 296.808 15.858
202212 26.564 296.797 29.889
202303 19.223 301.836 21.268
202306 22.760 305.109 24.912
202309 22.064 307.789 23.939
202312 22.491 306.746 24.486
202403 17.635 312.332 18.856
202406 13.461 314.175 14.309
202409 17.614 315.301 18.656
202412 17.771 315.605 18.804
202503 -23.549 319.799 -24.591
202506 8.021 322.561 8.304
202509 11.645 324.800 11.973
202512 8.271 324.054 8.524
202603 -1.488 330.213 -1.505
202606 9.756 333.952 9.756

Add all the adjusted EPS together and divide 10 will get our 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.

Is ON Semiconductor (MEX:ON) Overvalued in 2026?

Based on GuruFocus' analysis, ON Semiconductor stock appears to be overvalued. The current stock price of MXN1,184.40 is trading 12.8% above its estimated GF Value™ of MXN1,049.83. GuruFocus considers ON Semiconductor to be Modestly Overvalued.

Key valuation signals for MEX:ON:

  • Shiller PE Ratio:
  • GF Value™: MXN1,049.83 vs. price of MXN1,184.40 (12.8% above fair value)
  • GF Score™: 74/100 with 3 warning signs

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


ON Semiconductor Business Description

Address 5701 North Pima Road, Scottsdale, AZ, USA, 85250
Onsemi is a supplier of power semiconductors and sensors focused on the automotive and industrial markets. Onsemi is the second-largest power chipmaker in the world and the largest supplier of image sensors to the automotive market. While the firm used to be highly vertically integrated, it now pursues a hybrid manufacturing strategy for flexible capacity. Onsemi is pivoting to focus on emerging applications like electric vehicles, autonomous vehicles, industrial automation, and renewable energy.
74GF Score

Get the complete analysis for MEX:ON

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

MXN1,184.40
Price
MXN1,049.83
GF Value