STL Technology Co (ROCO:4931) Earnings Power Value (EPV): NT$17.17 (As of Dec25)

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ROCO:4931 STL Technology Co Ltd ROCO:4931
58 GF Score
Price NT$199.00
GF Value NT$47.65
Valuation Significantly Overvalued
! 2 Warning Signs
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What is STL Technology Co Earnings Power Value (EPV)?

STL Technology Co ROCO:4931 -9.95% 58 Earnings Power Value (EPV) is NT$17.17 as of Dec25. GuruFocus rates ROCO:4931 with a GF Score™ of 58/100 and a GF Value™ of NT$47.65 (Significantly Overvalued). The stock has 2 warning signs investors should review.

As of Dec25, STL Technology Co's earnings power value is NT$17.17. *

* GuruFocus does not store EPV value into our database if Average Maintenance CAPEX is 0.

Margin of Safety is -1059.25

The basic concept of EPV is that one should value a stock based on the current free cash flow of a company and not on future projections which may, or may not, come true. It is arguably a better way to analyze stocks than Discounted Cash Flow analysis that relies on highly speculative growth assumptions many years into the future. Assumption: Current profitability is sustainable.


STL Technology Co  (ROCO:4931) Earnings Power Value (EPV) Explanation

Assumption: Current profitability is sustainable.

Earnings power value (EPV) uses a very basic equation which assumes no growth, although it does rely on an assumption about the cost of capital as well as the fact that current earnings are sustainable. It also involves several adjustments to clean up the underlying Earnings figures.


Be Aware

Though using today's earnings in calculating Earnings Power Value, GuruFocus is normalizing these earnings to the business cycle. This eliminates the effects on profitability of valuing the firm at different points in the business cycle. This means that we are considering the average earnings over 5 years.


STL Technology Co Earnings Power Value (EPV) Related Terms


STL Technology Co Earnings Power Value (EPV) Historical Data

* Premium members only.

The historical data trend for STL Technology Co's Earnings Power Value (EPV) 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.

STL Technology Co Earnings Power Value (EPV) Chart

STL Technology Co Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Earnings Power Value (EPV)
Get a 7-Day Free Trial Premium Member Only Premium Member Only 7.26 20.02 9.76 13.69 17.17

STL Technology Co Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
Earnings Power Value (EPV) 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 13.69 14.87 15.56 13.96 17.17

ROCO:4931 vs VRT, BE: Earnings Power Value (EPV) Comparison

For the Electrical Equipment & Parts subindustry, STL Technology Co's Earnings Power Value (EPV), along with its competitors' market caps and Earnings Power Value (EPV) 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.


STL Technology Co Earnings Power Value (EPV) vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, STL Technology Co's Earnings Power Value (EPV) distribution charts can be found below:

* The bar in red indicates where STL Technology Co's Earnings Power Value (EPV) falls into.


ROCO:4931
58GF Score
STL Technology Co Ltd ROCO:4931
Earnings Power Value (EPV) is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

STL Technology Co Earnings Power Value (EPV) Calculation

Earnings Power Value also known as just Earnings Power is a valuation technique popularised by Bruce Greenwald, an authority on value investing at Columbia University. It is arguably a better way to analyze stocks than Discounted Cash Flow analysis that relies on highly speculative growth assumptions many years into the future.

The basic concept of EPV is that one should value a stock based on the current free cash flow of a company and not on future projections which may, or may not, come true. This valuation tool excludes the potential growth that a company may have so that needs to be looked at separately. Since future growth is excluded from the analysis, only the maintenance capital expenditures are subtracted from after-tax EBIT (earnings before interest and taxes) and growth capex is ignored.

STL Technology Co's "Earning Power" Calculation:

Average of Last 20 Quarters Last Quarter
Revenue 2,080
DDA 45
Operating Margin % 3.20
SGA * 25% 46
Tax Rate % 25.34
Maintenance Capex 48
Cash and Cash Equivalents 668
Short-Term Debt 5
Long-Term Debt 6
Shares Outstanding (Diluted) 65

1. Start with "Earnings" not including accounting adjustments (one-time charges not excluded unless policy has changed). "Earnings" are "Operating Income.

2. Look at average margins over a business/Industry cycle: Average Operating Margin = 3.20%

To normalize margins and eliminate the effects on profitability of valuing the firm at different points in the business cycle, it is usually best to take a long-term average of operating margins. Ideally this would be as long as 10 years and include at least one economic downturn. However, since most of companies do not have as long as 10-year history, here GuruFocus uses the latest 5 years data to do the calculation. To smooth out unusual years but reflect recent developments, we take an average of the 5 year margin.

3. Multiply average margins by sustainable revenues and then adjust for maintenance SGA. This yields "normalized" EBIT:

To be conservative, GuruFocus uses an average of the 5 year revenues as the sustainable revenue.
EPV analysis recognises that part of SG&A expenditure is made to maintain and replace the existing assets, while part is made to grow sales. Since EPV is only interested in what it costs a going concern to maintain its existing asset base, it adds back a percentage of SG&A (between 15% and 50% - this is a matter of judgment and industry knowledge) to make up for the fact that some of this expenditure went to fund growth and shouldn't be accounted for. To start off, we assume 25% for the sake of prudence.
Sustainable Revenue = NT$2,080 Mil, Average Operating Margin = 3.20%, Average Adjusted SGA = 46,
therefore "Normalized" EBIT = Sustainable Revenue * Average Operating Margin + Average Adjusted SGA = 2,080 * 3.20% +46 = NT$112.092513802 Mil.

4. Multiply by one minus Average Tax Rate (NOPAT):

Same as average operating margin calculation, GuruFocus takes an average of the 5 years tax rates.
Average Tax Rate = 25.34%, and "Normalized" EBIT = NT$112.092513802 Mil,
therefore After-tax "Normalized" EBIT = "Normalized" EBIT * ( 1 - Average Tax Rate ) = 112.092513802 * ( 1 - 25.34% ) = NT$83.687149879435 Mil.

5. Add back Excess Depreciation (after tax at 1/2 average tax rate). This yields "normalized" Earnings:

Excess Depreciation = Average DDA * % of Excess Depreciation (after tax at 1/2 average tax rate) = 45 * 0.5 * 25.34% = NT$5.731069878 Mil.
"Normalized" Earnings = After-tax "Normalized" EBIT + Excess Depreciation = 83.687149879435 + 5.731069878 = NT$89.418219757435 Mil.

6. Adjusted for Maintenance Capital Expenditure:

First, calculate the revenue change regarding to the previous year. If the revenue decreased from the previous year, then the Maintenance Capital Expenditure = Capital Expenditure (positive).
Second, if the revenue increased from the previous year, then calculate the percentage of Net PPE as of corresponding Revenue.
Third, calculate Capital Expenditure (positive) - percentage of Net PPE as of corresponding Revenue * revenue increase.
If [Capital Expenditure (positive) - percentage of Net PPE as of corresponding Revenue * revenue increase] was negative, then the Maintenance Capital Expenditure = Capital Expenditure (positive).
If [Capital Expenditure (positive) - percentage of Net PPE as of corresponding Revenue * revenue increase] was positive, then the Maintenance Capital Expenditure = Capital Expenditure (positive) - percentage of Net PPE as of corresponding Revenue * revenue increase.
Fourth, GuruFocus uses an average of the 5 year maintenance capital expenditures as maintenance CAPEX.
STL Technology Co's Average Maintenance CAPEX = NT$48 Mil *.
* GuruFocus does not store EPV value into our database if Average Maintenance CAPEX is 0.

7. Investors require a return of "WACC" for the risk they are taking: WACC = 9%

8. STL Technology Co's current cash and cash equivalent = NT$668 Mil.
STL Technology Co's current interest bearing debt = Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation = 6 + 5 = NT$10.609 Mil.
STL Technology Co's current Shares Outstanding (Diluted Average) = 65 Mil.

STL Technology Co's Earnings Power Value (EPV) for Dec25 is calculated as:

EPV = ( ( Norm. Earnings-Maint. CAPEX *) / WACC + CashandEquiv - Int. Bearing Debt ) / Shares Outstanding (Diluted Average)
= ( ( 89.418219757435 - 48)/ 9%+668-10.609 )/65
=17.17

Margin of Safety (EPV)=( Earnings Power Value (EPV)-Current Price )/Earnings Power Value (EPV)
=( 17.166253136464-199.00 )/17.166253136464
= -1059.25%

* 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.

* GuruFocus does not store EPV value into our database if Average Maintenance CAPEX is 0.

What does a Earnings Power Value (EPV) of NT$17.17 mean?
STL Technology Co (ROCO:4931) has a Earnings Power Value (EPV) of NT$17.17 as of Dec25. Bruce Greenwald's earnings power value focuses on current earnings without factoring in future growth. View historical data on STL Technology Co and its competitors.
Is STL Technology Co's Earnings Power Value (EPV) too high?
STL Technology Co's current Earnings Power Value (EPV) is NT$17.17. Overall, STL Technology Co has a GF Score™ of 58/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does STL Technology Co's Earnings Power Value (EPV) compare to VRT and BE?
STL Technology Co's Earnings Power Value (EPV) of NT$17.17 can be compared against companies in the Industrial Products industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Earnings Power Value (EPV) for an Industrial Products company?
A good Earnings Power Value (EPV) depends on the Industrial Products industry context. However, Earnings Power Value (EPV) 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 Earnings Power Value (EPV) mean?
A high Earnings Power Value (EPV) can signal that a stock is expensive relative to its fundamentals. Bruce Greenwald's earnings power value focuses on current earnings without factoring in future growth. View historical data on STL Technology Co and its competitors. STL Technology Co's current Earnings Power Value (EPV) is NT$17.17. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is STL Technology Co stock overvalued right now?
Based on GuruFocus' analysis, STL Technology Co (ROCO:4931) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$47.65, compared to a current price of NT$199.00 — trading 317.6% above its estimated fair value. The current Earnings Power Value (EPV) is NT$17.17. STL Technology Co's overall GF Score™ is 58/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Earnings Power Value (EPV) calculated?
Earnings Power Value (EPV) is calculated from a company's financial statements. For STL Technology Co (ROCO:4931), the current Earnings Power Value (EPV) is NT$17.17 as of Dec25. 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 STL Technology Co (ROCO:4931) Overvalued in 2026?

Based on GuruFocus' analysis, STL Technology Co stock appears to be overvalued. The current stock price of NT$199.00 is trading 317.6% above its estimated GF Value™ of NT$47.65. GuruFocus considers STL Technology Co to be Significantly Overvalued.

Key valuation signals for ROCO:4931:

  • Earnings Power Value (EPV): NT$17.17
  • GF Value™: NT$47.65 vs. price of NT$199.00 (317.6% above fair value)
  • GF Score™: 58/100 with 2 warning signs

No single metric tells the full story. See the ROCO:4931 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


STL Technology Co Business Description

Address No. 1, West 15th Street, Cianjhen District, Kaohsiung, TWN, 806011
STL Technology Co Ltd is engaged in the manufacturing and sales of lithium-ion battery modules in Taiwan. The company's products are mainly focused on industrial applications such as gardening and hand-held power tools, light electric vehicles, and energy storage system devices. The company and it's subsidiaries mainly operate in Taiwan.
58GF Score

Get the complete analysis for ROCO:4931

Earnings Power Value (EPV) is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$199.00
Price
NT$47.65
GF Value