SUMCO (STU:S3X) Cyclically Adjusted PS Ratio: (As of Aug. 18, 2026)

Author: Vera Yuan 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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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.

STU:S3X SUMCO Corp STU:S3X
64 GF Score
Price €22.49
GF Value €7.64
Valuation Significantly Overvalued
! 5 Warning Signs
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What is SUMCO Cyclically Adjusted PS Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


SUMCO  (STU:S3X) Cyclically Adjusted PS Ratio Explanation

Compared with the regular PS Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PS Ratio smoothed out the fluctuations of revenue during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Cyclically Adjusted PS Ratio should give similar results to regular PS Ratio.


SUMCO Cyclically Adjusted PS Ratio Related Terms


SUMCO Cyclically Adjusted PS Ratio Historical Data

* Premium members only.

The historical data trend for SUMCO's Cyclically Adjusted PS 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.

SUMCO Cyclically Adjusted PS Ratio Chart

SUMCO Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PS Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 2.58 1.78 2.01 1.06 1.23

SUMCO Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Cyclically Adjusted PS 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 0.99 1.37 1.23 1.41 0.00

STU:S3X vs AMAT, LRCX, KLAC: Cyclically Adjusted PS Ratio Comparison

For the Semiconductor Equipment & Materials subindustry, SUMCO's Cyclically Adjusted PS Ratio, along with its competitors' market caps and Cyclically Adjusted PS 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.


SUMCO Cyclically Adjusted PS Ratio vs Semiconductors Industry

For the Semiconductors industry and Technology sector, SUMCO's Cyclically Adjusted PS Ratio distribution charts can be found below:

* The bar in red indicates where SUMCO's Cyclically Adjusted PS Ratio falls into.


STU:S3X
64GF Score
SUMCO Corp STU:S3X
Cyclically Adjusted PS Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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SUMCO Cyclically Adjusted PS Ratio Calculation

Like the Shiller PE Ratio, the Cyclically Adjusted PS Ratio takes the Revenue per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/S calculation. Because it considers this 10-year average, it's often referred to as the CAPS Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PS Ratio.

SUMCO's Cyclically Adjusted Revenue per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, SUMCO's adjusted Revenue per Share data for the three months ended in Jun. 2026 was:

Adj_RevenuePerShare=Revenue per Share/CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0/113.6000*113.6000
=0.000

Current CPI (Jun. 2026) = 113.6000.

SUMCO Quarterly Data

Revenue per Share CPI Adj_RevenuePerShare
201609 1.558 98.000 1.806
201612 1.559 98.400 1.800
201703 1.700 98.100 1.969
201706 1.746 98.500 2.014
201709 1.715 98.800 1.972
201712 1.791 99.400 2.047
201803 2.015 99.200 2.308
201806 2.167 99.200 2.482
201809 2.175 99.900 2.473
201812 2.207 99.700 2.515
201903 2.229 99.700 2.540
201906 2.077 99.800 2.364
201909 2.074 100.100 2.354
201912 1.996 100.500 2.256
202003 2.075 100.300 2.350
202006 2.123 99.900 2.414
202009 1.977 99.900 2.248
202012 1.974 99.300 2.258
202103 2.017 99.900 2.294
202106 2.126 99.500 2.427
202109 2.305 100.100 2.616
202112 2.025 100.100 2.298
202203 2.197 101.100 2.469
202206 2.157 101.800 2.407
202209 2.340 103.100 2.578
202212 2.346 104.100 2.560
202303 2.194 104.400 2.387
202306 2.064 105.200 2.229
202309 1.813 106.200 1.939
202312 1.914 106.800 2.036
202403 1.642 107.200 1.740
202406 1.763 108.200 1.851
202409 1.774 108.900 1.851
202412 1.775 110.700 1.821
202503 1.818 111.100 1.859
202506 1.766 111.700 1.796
202509 1.635 112.000 1.658
202512 1.648 113.000 1.657
202603 1.581 112.700 1.594
202606 0.000 113.600 0.000

Add all the adjusted revenue per share together and divide 10 will get our Cyclically Adjusted Revenue per Share.

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 SUMCO (STU:S3X) Overvalued in 2026?

Based on GuruFocus' analysis, SUMCO stock appears to be overvalued. The current stock price of €22.49 is trading 194.3% above its estimated GF Value™ of €7.64. GuruFocus considers SUMCO to be Significantly Overvalued.

Key valuation signals for STU:S3X:

  • Cyclically Adjusted PS Ratio:
  • GF Value™: €7.64 vs. price of €22.49 (194.3% above fair value)
  • GF Score™: 64/100 with 5 warning signs

No single metric tells the full story. See the STU:S3X stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


SUMCO Business Description

Address 1-2-1 Shibaura, Minato-ku, Tokyo, JPN, 105-8634
Founded in 1999 as a joint venture between Nippon Steel and two Mitsubishi entities, Sumco is the world's second-largest semiconductor-grade silicon wafer manufacturer, with an estimated 21% market share in 2025. Sumco is headquartered in Tokyo and operates seven production sites across Japan. It also maintains sales and support offices in Taiwan, the US, the UK, Indonesia, and Singapore. Sumco sells to most semiconductor manufacturers like TSMC, Intel, Samsung, and Micron. The firm employs over 9,700 people.
64GF Score

Get the complete analysis for STU:S3X

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

€22.49
Price
€7.64
GF Value