LandMark Optoelectronics (ROCO:3081) Beneish M-Score: -1.43 (As of Jul. 31, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
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.
Reviewed by: Charlie Tian Charlie Tian
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.

ROCO:3081 LandMark Optoelectronics Corp ROCO:3081
66 GF Score
Price NT$1,630.00
GF Value NT$753.03
Valuation Significantly Overvalued
! 3 Warning Signs
View Full Analysis

What is LandMark Optoelectronics Beneish M-Score?

LandMark Optoelectronics ROCO:3081 +9.76% 66 Beneish M-Score is -1.43 as of Jul. 31, 2026. GuruFocus rates ROCO:3081 with a GF Score™ of 66/100 and a GF Value™ of NT$753.03 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 985 Semiconductors companies, LandMark Optoelectronics ranks worse than 84.26% 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.

Warning Sign:

Beneish M-Score -1.43 higher than -1.78, which implies that the company might have manipulated its financial results.

The historical rank and industry rank for LandMark Optoelectronics's Beneish M-Score or its related term are showing as below:

ROCO:3081' s Beneish M-Score Range Over the Past 10 Years
Min: -3.77   Med: -2.77   Max: 1.87
Current: -1.43

During the past 13 years, the highest Beneish M-Score of LandMark Optoelectronics was 1.87. The lowest was -3.77. And the median was -2.77.


LandMark Optoelectronics Beneish M-Score Historical Data

* Premium members only.

The historical data trend for LandMark Optoelectronics'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.

LandMark Optoelectronics Beneish M-Score Chart

LandMark Optoelectronics 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 -3.01 -2.23 -2.34 -3.19 -2.33

LandMark Optoelectronics Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
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 -3.47 -3.04 -2.73 -2.33 -1.43

ROCO:3081 vs AMAT, LRCX, KLAC: Beneish M-Score Comparison

For the Semiconductor Equipment & Materials subindustry, LandMark Optoelectronics'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.


LandMark Optoelectronics Beneish M-Score vs Semiconductors Industry

For the Semiconductors industry and Technology sector, LandMark Optoelectronics's Beneish M-Score distribution charts can be found below:

* The bar in red indicates where LandMark Optoelectronics's Beneish M-Score falls into.


ROCO:3081
66GF Score
LandMark Optoelectronics Corp ROCO:3081
Beneish M-Score is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

LandMark Optoelectronics 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 LandMark Optoelectronics 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 * 1.1836+0.528 * 0.5626+0.404 * 2.0997+0.892 * 1.9812+0.115 * 1.2234
-0.172 * SGAI+4.679 * TATA-0.327 * LVGI
-0.172 * 0.669+4.679 * -0.015708-0.327 * 1.6585
=-1.43

* 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 (Mar26) TTM:Last Year (Mar25) TTM:
Total Receivables was NT$562 Mil.
Revenue was 904.389 + 642.422 + 552.804 + 553.094 = NT$2,653 Mil.
Gross Profit was 495.233 + 312.659 + 241.218 + 239.659 = NT$1,289 Mil.
Total Current Assets was NT$3,182 Mil.
Total Assets was NT$5,678 Mil.
Property, Plant and Equipment(Net PPE) was NT$1,973 Mil.
Depreciation, Depletion and Amortization(DDA) was NT$299 Mil.
Selling, General, & Admin. Expense(SGA) was NT$182 Mil.
Total Current Liabilities was NT$1,101 Mil.
Long-Term Debt & Capital Lease Obligation was NT$335 Mil.
Net Income was 317.515 + 190.333 + 99.013 + 96.786 = NT$704 Mil.
Non Operating Income was 0 + 0 + 0 + 0 = NT$0 Mil.
Cash Flow from Operations was 282.783 + 207.734 + 152.013 + 150.31 = NT$793 Mil.
Total Receivables was NT$240 Mil.
Revenue was 454.502 + 288.811 + 323.044 + 272.588 = NT$1,339 Mil.
Gross Profit was 147.013 + 90.098 + 89.125 + 39.755 = NT$366 Mil.
Total Current Assets was NT$2,366 Mil.
Total Assets was NT$4,462 Mil.
Property, Plant and Equipment(Net PPE) was NT$1,900 Mil.
Depreciation, Depletion and Amortization(DDA) was NT$365 Mil.
Selling, General, & Admin. Expense(SGA) was NT$138 Mil.
Total Current Liabilities was NT$392 Mil.
Long-Term Debt & Capital Lease Obligation was NT$288 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)
=(562.306 / 2652.709) / (239.794 / 1338.945)
=0.211974 / 0.179092
=1.1836

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)
=(365.991 / 1338.945) / (1288.769 / 2652.709)
=0.273343 / 0.485831
=0.5626

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 - (3182.499 + 1973.315) / 5678.137) / (1 - (2365.942 + 1900.213) / 4461.624)
=0.091988 / 0.043811
=2.0997

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
=2652.709 / 1338.945
=1.9812

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))
=(364.589 / (364.589 + 1900.213)) / (299.001 / (299.001 + 1973.315))
=0.160981 / 0.131584
=1.2234

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)
=(182.44 / 2652.709) / (137.644 / 1338.945)
=0.068775 / 0.1028
=0.669

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)
=((335.156 + 1100.813) / 5678.137) / ((288.206 + 392.118) / 4461.624)
=0.252894 / 0.152483
=1.6585

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
=(703.647 - 0 - 792.84) / 5678.137
=-0.015708

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.

LandMark Optoelectronics has a M-score of -1.43 signals that the company is likely to be a manipulator.

Frequently Asked Questions Learn more about Beneish M-Score →
What does a Beneish M-Score of -1.43 mean?
LandMark Optoelectronics (ROCO:3081) has a Beneish M-Score of -1.43 as of Jul. 31, 2026. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on LandMark Optoelectronics and its competitors. According to the industry distribution chart, LandMark Optoelectronics ranks #830 out of 985 companies in the Semiconductors industry, placing it in the top 84.3%.
Is LandMark Optoelectronics' Beneish M-Score too high?
LandMark Optoelectronics' current Beneish M-Score is -1.43. Based on the distribution chart, LandMark Optoelectronics ranks #830 out of 985 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, LandMark Optoelectronics has a GF Score™ of 66/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does LandMark Optoelectronics' Beneish M-Score compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, LandMark Optoelectronics ranks #830 out of 985 companies for Beneish M-Score. This places LandMark Optoelectronics in the lower 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 Semiconductors company?
A good Beneish M-Score depends on the Semiconductors 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 LandMark Optoelectronics and its competitors. LandMark Optoelectronics's current Beneish M-Score is -1.43. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is LandMark Optoelectronics stock overvalued right now?
Based on GuruFocus' analysis, LandMark Optoelectronics (ROCO:3081) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$753.03, compared to a current price of NT$1,630.00 — trading 116.5% above its estimated fair value. The current Beneish M-Score is -1.43. LandMark Optoelectronics' overall GF Score™ is 66/100 with 3 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 LandMark Optoelectronics (ROCO:3081), the current Beneish M-Score is -1.43 as of Jul. 31, 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 LandMark Optoelectronics (ROCO:3081) Overvalued in 2026?

Based on GuruFocus' analysis, LandMark Optoelectronics stock appears to be overvalued. The current stock price of NT$1,630.00 is trading 116.5% above its estimated GF Value™ of NT$753.03. GuruFocus considers LandMark Optoelectronics to be Significantly Overvalued.

Key valuation signals for ROCO:3081:

  • Beneish M-Score: -1.43
  • GF Value™: NT$753.03 vs. price of NT$1,630.00 (116.5% above fair value)
  • GF Score™: 66/100 with 3 warning signs

No single metric tells the full story. See the ROCO:3081 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


LandMark Optoelectronics Business Description

Address No. 12, Nanke 9th Road, Southern Science Park, Shanhua District, Tainan, TWN
LandMark Optoelectronics Corp is active in the semiconductor industry as an epi-wafer supplier. It is engaged in the manufacturing, processing, and selling of optical semiconductors, laser diodes, and high brightness InAlGaP/AlGalnAs. The company operates in a single reportable segment, which is single product manufacturing and selling of wafers. Some of its products are DFB Epiwafer, EML Epiwafer, APD Epiwafer, FP Epiwafer, and PIN PD Epiwafer. Its geographical segments are United States, Mainland China, Taiwan, and others.
66GF Score

Get the complete analysis for ROCO:3081

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

NT$1,630.00
Price
NT$753.03
GF Value