Formosa Optical Technology Co (ROCO:5312) Beneish M-Score: -2.75 (As of Jun. 28, 2026)


ROCO:5312 Formosa Optical Technology Co Ltd ROCO:5312
81 GF Score
Price NT$89.70
GF Value NT$108.45
Valuation Modestly Undervalued
! 4 Warning Signs
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What is Formosa Optical Technology Co Beneish M-Score?

Formosa Optical Technology Co ROCO:5312 -0.66% 81 Beneish M-Score is -2.75 as of Jun. 28, 2026. GuruFocus rates ROCO:5312 with a GF Score™ of 81/100 and a GF Value™ of NT$108.45 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 766 Medical Devices & Instruments companies, Formosa Optical Technology Co ranks better than 64.62% 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 -2.75 no higher than -1.78, which implies that the company is unlikely to be a manipulator.

The historical rank and industry rank for Formosa Optical Technology Co's Beneish M-Score or its related term are showing as below:

ROCO:5312' s Beneish M-Score Range Over the Past 10 Years
Min: -3.08   Med: -2.67   Max: -2.19
Current: -2.75

During the past 13 years, the highest Beneish M-Score of Formosa Optical Technology Co was -2.19. The lowest was -3.08. And the median was -2.67.


Formosa Optical Technology Co Beneish M-Score Historical Data

* Premium members only.

The historical data trend for Formosa Optical Technology 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.

Formosa Optical Technology Co Beneish M-Score Chart

Formosa Optical Technology Co Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Beneish M-Score
Get a 7-Day Free Trial Premium Member Only Premium Member Only -2.70 -3.04 -2.23 -2.64 -2.75

Formosa Optical Technology Co Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 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 Premium Member Only Premium Member Only Premium Member Only Premium Member Only -2.64 -2.72 -2.72 -2.88 -2.75

ROCO:5312 vs ISRG, BDX, MDLN: Beneish M-Score Comparison

For the Medical Instruments & Supplies subindustry, Formosa Optical Technology 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.


Formosa Optical Technology Co Beneish M-Score vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Formosa Optical Technology Co's Beneish M-Score distribution charts can be found below:

* The bar in red indicates where Formosa Optical Technology Co's Beneish M-Score falls into.


ROCO:5312
81GF Score
Formosa Optical Technology Co Ltd ROCO:5312
Beneish M-Score is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Formosa Optical Technology 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 Formosa Optical Technology 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 * 0.9156+0.528 * 0.9918+0.404 * 1.0701+0.892 * 1.0394+0.115 * 1.0428
-0.172 * SGAI+4.679 * TATA-0.327 * LVGI
-0.172 * 1.0304+4.679 * -0.048975-0.327 * 1.0729
=-2.75

* 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$114 Mil.
Revenue was 1126.859 + 1039.939 + 960.354 + 1001.447 = NT$4,129 Mil.
Gross Profit was 707.138 + 663.628 + 619.561 + 629.459 = NT$2,620 Mil.
Total Current Assets was NT$5,501 Mil.
Total Assets was NT$9,155 Mil.
Property, Plant and Equipment(Net PPE) was NT$2,554 Mil.
Depreciation, Depletion and Amortization(DDA) was NT$552 Mil.
Selling, General, & Admin. Expense(SGA) was NT$2,321 Mil.
Total Current Liabilities was NT$3,524 Mil.
Long-Term Debt & Capital Lease Obligation was NT$1,258 Mil.
Net Income was 63.542 + 155.903 + 45.568 + 120.262 = NT$385 Mil.
Non Operating Income was 0 + 0 + 0 + 0 = NT$0 Mil.
Cash Flow from Operations was 318.523 + 145.765 + 86.58 + 282.753 = NT$834 Mil.
Total Receivables was NT$120 Mil.
Revenue was 980.15 + 1012.85 + 955.041 + 1024.026 = NT$3,972 Mil.
Gross Profit was 638.118 + 628.866 + 604.136 + 628.6 = NT$2,500 Mil.
Total Current Assets was NT$4,834 Mil.
Total Assets was NT$8,000 Mil.
Property, Plant and Equipment(Net PPE) was NT$2,268 Mil.
Depreciation, Depletion and Amortization(DDA) was NT$516 Mil.
Selling, General, & Admin. Expense(SGA) was NT$2,167 Mil.
Total Current Liabilities was NT$2,872 Mil.
Long-Term Debt & Capital Lease Obligation was NT$1,022 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)
=(114.172 / 4128.599) / (119.963 / 3972.067)
=0.027654 / 0.030202
=0.9156

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)
=(2499.72 / 3972.067) / (2619.786 / 4128.599)
=0.629325 / 0.634546
=0.9918

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 - (5501.266 + 2553.932) / 9154.653) / (1 - (4833.649 + 2268.18) / 7999.615)
=0.120098 / 0.112229
=1.0701

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
=4128.599 / 3972.067
=1.0394

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))
=(515.764 / (515.764 + 2268.18)) / (551.763 / (551.763 + 2553.932))
=0.185264 / 0.177662
=1.0428

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)
=(2320.909 / 4128.599) / (2166.992 / 3972.067)
=0.562154 / 0.545558
=1.0304

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)
=((1258.045 + 3523.905) / 9154.653) / ((1022.455 + 2872.077) / 7999.615)
=0.522352 / 0.48684
=1.0729

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
=(385.275 - 0 - 833.621) / 9154.653
=-0.048975

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.

Formosa Optical Technology Co has a M-score of -2.75 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 -2.75 mean?
Formosa Optical Technology Co (ROCO:5312) has a Beneish M-Score of -2.75 as of Jun. 28, 2026. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on Formosa Optical Technology Co and its competitors. According to the industry distribution chart, Formosa Optical Technology Co ranks #271 out of 766 companies in the Medical Devices & Instruments industry, placing it in the top 35.4%.
Is Formosa Optical Technology Co's Beneish M-Score too high?
Formosa Optical Technology Co's current Beneish M-Score is -2.75. Based on the distribution chart, Formosa Optical Technology Co ranks #271 out of 766 companies in the Medical Devices & Instruments industry, which is above the industry midpoint. Overall, Formosa Optical Technology Co has a GF Score™ of 81/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Formosa Optical Technology Co's Beneish M-Score compare to ISRG and BDX?
According to the Medical Devices & Instruments industry distribution chart, Formosa Optical Technology Co ranks #271 out of 766 companies for Beneish M-Score. This puts Formosa Optical Technology Co in the upper half of its industry. 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 Medical Devices & Instruments company?
A good Beneish M-Score depends on the Medical Devices & Instruments 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 Formosa Optical Technology Co and its competitors. Formosa Optical Technology Co's current Beneish M-Score is -2.75. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Formosa Optical Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Formosa Optical Technology Co (ROCO:5312) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$108.45, compared to a current price of NT$89.70 — trading 17.3% below its estimated fair value. The current Beneish M-Score is -2.75. Formosa Optical Technology Co's overall GF Score™ is 81/100 with 4 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 Formosa Optical Technology Co (ROCO:5312), the current Beneish M-Score is -2.75 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 Formosa Optical Technology Co (ROCO:5312) Overvalued in 2026?

Based on GuruFocus' analysis, Formosa Optical Technology Co stock appears to be undervalued. The current stock price of NT$89.70 is trading 17.3% below its estimated GF Value™ of NT$108.45. GuruFocus considers Formosa Optical Technology Co to be Modestly Undervalued.

Key valuation signals for ROCO:5312:

  • Beneish M-Score: -2.75
  • GF Value™: NT$108.45 vs. price of NT$89.70 (17.3% below fair value)
  • GF Score™: 81/100 with 4 warning signs

No single metric tells the full story. See the ROCO:5312 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Formosa Optical Technology Co Business Description

Address No. 97, Xintai 5th Road, 16th Floor, Section 1, Xizhi District, New Taipei City, TWN
Formosa Optical Technology Co Ltd is mainly engaged in the eyewear business, including optometry services and the retail business selling contact lenses and eye drops. The Group mainly derives revenue from the business divisions of Formosa Optical Technology and Bo Wei Optical, with Formosa Optical Technology generating maximum revenue. The majority of revenue is derived from the sale of glasses. The Group generates the majority of its revenue from Taiwan.
81GF Score

Get the complete analysis for ROCO:5312

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

NT$89.70
Price
NT$108.45
GF Value