Winston Medical Supply Co (ROCO:6817) Beneish M-Score: -2.93 (As of Jun. 28, 2026)


ROCO:6817 Winston Medical Supply Co Ltd ROCO:6817
85 GF Score
Price NT$59.90
GF Value NT$102.51
Valuation Significantly Undervalued
! 2 Warning Signs
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What is Winston Medical Supply Co Beneish M-Score?

Winston Medical Supply Co ROCO:6817 -0.17% 85 Beneish M-Score is -2.93 as of Jun. 28, 2026. GuruFocus rates ROCO:6817 with a GF Score™ of 85/100 and a GF Value™ of NT$102.51 (Significantly Undervalued). The stock has 2 warning signs investors should review. Among 908 Drug Manufacturers companies, Winston Medical Supply Co ranks better than 80.84% on this metric.

The zones of discrimination for M-Score is as such:

An M-Score of equal or less than -1.78 suggests that the company is unlikely to be a manipulator.
An M-Score of greater than -1.78 signals that the company is likely to be a manipulator.

Good Sign:

Beneish M-Score -2.93 no higher than -1.78, which implies that the company is unlikely to be a manipulator.

The historical rank and industry rank for Winston Medical Supply Co's Beneish M-Score or its related term are showing as below:

ROCO:6817' s Beneish M-Score Range Over the Past 10 Years
Min: -3.09   Med: -2.8   Max: -2.02
Current: -2.93

During the past 9 years, the highest Beneish M-Score of Winston Medical Supply Co was -2.02. The lowest was -3.09. And the median was -2.80.


Winston Medical Supply Co Beneish M-Score Historical Data

* Premium members only.

The historical data trend for Winston Medical Supply Co's Beneish M-Score 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.

Winston Medical Supply Co Beneish M-Score Chart

Winston Medical Supply Co Annual Data
Trend Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Beneish M-Score
Get a 7-Day Free Trial Premium Member Only -3.09 -2.17 -2.80 -2.59 -2.93

Winston Medical Supply Co Semi-Annual Data
Dec17 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
Beneish M-Score 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 -2.80 0.00 -2.59 0.00 -2.93

ROCO:6817 vs ZTS: Beneish M-Score Comparison

For the Drug Manufacturers - Specialty & Generic subindustry, Winston Medical Supply Co's Beneish M-Score, along with its competitors' market caps and Beneish M-Score 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.


Winston Medical Supply Co Beneish M-Score vs Drug Manufacturers Industry

For the Drug Manufacturers industry and Healthcare sector, Winston Medical Supply Co's Beneish M-Score distribution charts can be found below:

* The bar in red indicates where Winston Medical Supply Co's Beneish M-Score falls into.


ROCO:6817
85GF Score
Winston Medical Supply Co Ltd ROCO:6817
Beneish M-Score is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Winston Medical Supply Co Beneish M-Score Calculation

The M-score was created by Professor Messod Beneish. Instead of measuring the bankruptcy risk (Altman Z-Score) or business trend (Piotroski F-Score), M-score can be used to detect the risk of earnings manipulation. This is the original research paper on M-score.

The M-Score Variables:

The M-score of Winston Medical Supply Co for today is based on a combination of the following eight different indices:

M=-4.84+0.92 * DSRI+0.528 * GMI+0.404 * AQI+0.892 * SGI+0.115 * DEPI
=-4.84+0.92 * 0.8539+0.528 * 1.0472+0.404 * 0.6914+0.892 * 1.0072+0.115 * 1.0768
-0.172 * SGAI+4.679 * TATA-0.327 * LVGI
-0.172 * 1.0336+4.679 * -0.04825-0.327 * 0.9927
=-2.93

* 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.

This Year (Dec25) TTM:Last Year (Dec24) TTM:
Total Receivables was NT$142.2 Mil.
Revenue was NT$700.1 Mil.
Gross Profit was NT$303.8 Mil.
Total Current Assets was NT$601.1 Mil.
Total Assets was NT$780.9 Mil.
Property, Plant and Equipment(Net PPE) was NT$167.1 Mil.
Depreciation, Depletion and Amortization(DDA) was NT$26.8 Mil.
Selling, General, & Admin. Expense(SGA) was NT$153.2 Mil.
Total Current Liabilities was NT$302.1 Mil.
Long-Term Debt & Capital Lease Obligation was NT$40.2 Mil.
Net Income was NT$117.3 Mil.
Gross Profit was NT$0.0 Mil.
Cash Flow from Operations was NT$155.0 Mil.
Total Receivables was NT$165.3 Mil.
Revenue was NT$695.1 Mil.
Gross Profit was NT$315.8 Mil.
Total Current Assets was NT$624.0 Mil.
Total Assets was NT$812.7 Mil.
Property, Plant and Equipment(Net PPE) was NT$169.5 Mil.
Depreciation, Depletion and Amortization(DDA) was NT$29.6 Mil.
Selling, General, & Admin. Expense(SGA) was NT$147.2 Mil.
Total Current Liabilities was NT$310.7 Mil.
Long-Term Debt & Capital Lease Obligation was NT$48.2 Mil.




1. DSRI = Days Sales in Receivables Index

Measured as the ratio of Revenue in Total Receivables in year t to year t-1.

A large increase in DSR could be indicative of revenue inflation.

DSRI=(Receivables_t / Revenue_t) / (Receivables_t-1 / Revenue_t-1)
=(142.192 / 700.074) / (165.329 / 695.077)
=0.20311 / 0.237857
=0.8539

2. GMI = Gross Margin Index

Measured as the ratio of gross margin in year t-1 to gross margin in year t.

Gross margin has deteriorated when this index is above 1. A firm with poorer prospects is more likely to manipulate earnings.

GMI=GrossMargin_t-1 / GrossMargin_t
=(GrossProfit_t-1 / Revenue_t-1) / (GrossProfit_t / Revenue_t)
=(315.84 / 695.077) / (303.769 / 700.074)
=0.454396 / 0.43391
=1.0472

3. AQI = Asset Quality Index

AQI is the ratio of asset quality in year t to year t-1.

Asset quality is measured as the ratio of non-current assets other than Property, Plant and Equipment to Total Assets.

AQI=(1 - (CurrentAssets_t + PPE_t) / TotalAssets_t) / (1 - (CurrentAssets_t-1 + PPE_t-1) / TotalAssets_t-1)
=(1 - (601.115 + 167.057) / 780.917) / (1 - (624.023 + 169.467) / 812.673)
=0.016321 / 0.023605
=0.6914

4. SGI = Sales Growth Index

Ratio of Revenue in year t to sales in year t-1.

Sales growth is not itself a measure of manipulation. However, growth companies are likely to find themselves under pressure to manipulate in order to keep up appearances.

SGI=Sales_t / Sales_t-1
=Revenue_t / Revenue_t-1
=700.074 / 695.077
=1.0072

5. DEPI = Depreciation Index

Measured as the ratio of the rate of Depreciation, Depletion and Amortization in year t-1 to the corresponding rate in year t.

DEPI greater than 1 indicates that assets are being depreciated at a slower rate. This suggests that the firm might be revising useful asset life assumptions upwards, or adopting a new method that is income friendly.

DEPI=(Depreciation_t-1 / (Depreciaton_t-1 + PPE_t-1)) / (Depreciation_t / (Depreciaton_t + PPE_t))
=(29.644 / (29.644 + 169.467)) / (26.805 / (26.805 + 167.057))
=0.148882 / 0.138268
=1.0768

Note: If the Depreciation, Depletion and Amortization data is not available, we assume that the depreciation rate is constant and set the Depreciation Index to 1.

6. SGAI = Sales, General and Administrative expenses Index

The ratio of Selling, General, & Admin. Expense(SGA) to Sales in year t relative to year t-1.

SGA expenses index > 1 means that the company is becoming less efficient in generate sales.

SGAI=(SGA_t / Sales_t) / (SGA_t-1 /Sales_t-1)
=(153.189 / 700.074) / (147.156 / 695.077)
=0.218818 / 0.211712
=1.0336

7. LVGI = Leverage Index

The ratio of total debt to Total Assets in year t relative to yeat t-1.

An LVGI > 1 indicates an increase in leverage

LVGI=((LTD_t + CurrentLiabilities_t) / TotalAssets_t) / ((LTD_t-1 + CurrentLiabilities_t-1) / TotalAssets_t-1)
=((40.213 + 302.092) / 780.917) / ((48.16 + 310.702) / 812.673)
=0.438337 / 0.441582
=0.9927

8. TATA = Total Accruals to Total Assets

Total accruals calculated as the change in working capital accounts other than cash less depreciation.

TATA=(IncomefromContinuingOperations_t - CashFlowsfromOperations_t) / TotalAssets_t
=(NetIncome_t - NonOperatingIncome_t - CashFlowsfromOperations_t) / TotalAssets_t
=(117.293 - 0 - 154.972) / 780.917
=-0.04825

An M-Score of equal or less than -1.78 suggests that the company is unlikely to be a manipulator. An M-Score of greater than -1.78 signals that the company is likely to be a manipulator.

Winston Medical Supply Co has a M-score of -2.93 suggests that the company is unlikely to be a manipulator.

Frequently Asked Questions Learn more about Beneish M-Score →
What does a Beneish M-Score of -2.93 mean?
Winston Medical Supply Co (ROCO:6817) has a Beneish M-Score of -2.93 as of Jun. 28, 2026. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on Winston Medical Supply Co and its competitors. According to the industry distribution chart, Winston Medical Supply Co ranks #174 out of 908 companies in the Drug Manufacturers industry, placing it in the top 19.2%.
Is Winston Medical Supply Co's Beneish M-Score too high?
Winston Medical Supply Co's current Beneish M-Score is -2.93. Based on the distribution chart, Winston Medical Supply Co ranks #174 out of 908 companies in the Drug Manufacturers industry, which is in the top quartile — a strong position relative to peers. Overall, Winston Medical Supply Co has a GF Score™ of 85/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Winston Medical Supply Co's Beneish M-Score compare to ZTS?
According to the Drug Manufacturers industry distribution chart, Winston Medical Supply Co ranks #174 out of 908 companies for Beneish M-Score. This places Winston Medical Supply Co in the top 19% of its industry — outperforming the majority of peers. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Beneish M-Score for a Drug Manufacturers company?
A good Beneish M-Score depends on the Drug Manufacturers industry context. However, Beneish M-Score 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 Beneish M-Score mean?
A high Beneish M-Score can signal that a stock is expensive relative to its fundamentals. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on Winston Medical Supply Co and its competitors. Winston Medical Supply Co's current Beneish M-Score is -2.93. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Winston Medical Supply Co stock overvalued right now?
Based on GuruFocus' analysis, Winston Medical Supply Co (ROCO:6817) is currently considered Significantly Undervalued. The stock's GF Value™ is NT$102.51, compared to a current price of NT$59.90 — trading 41.6% below its estimated fair value. The current Beneish M-Score is -2.93. Winston Medical Supply Co's overall GF Score™ is 85/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Beneish M-Score calculated?
Beneish M-Score is calculated from a company's financial statements. For Winston Medical Supply Co (ROCO:6817), the current Beneish M-Score is -2.93 as of Jun. 28, 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 Winston Medical Supply Co (ROCO:6817) Overvalued in 2026?

Based on GuruFocus' analysis, Winston Medical Supply Co stock appears to be undervalued. The current stock price of NT$59.90 is trading 41.6% below its estimated GF Value™ of NT$102.51. GuruFocus considers Winston Medical Supply Co to be Significantly Undervalued.

Key valuation signals for ROCO:6817:

  • Beneish M-Score: -2.93
  • GF Value™: NT$102.51 vs. price of NT$59.90 (41.6% below fair value)
  • GF Score™: 85/100 with 2 warning signs

No single metric tells the full story. See the ROCO:6817 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Winston Medical Supply Co Business Description

Address 117 Renai Street, Yanzhouli, Yongkang District, Tainan, TWN, 710
Winston Medical Supply Co Ltd is a manufacturer of medical products. It produces sterile ophthalmic preparations, hormone preparations and healthy products.
85GF Score

Get the complete analysis for ROCO:6817

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

NT$59.90
Price
NT$102.51
GF Value