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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 -2.09 no higher than -1.78, which implies that the company is unlikely to be a manipulator.
The historical rank and industry rank for Westlake's Beneish M-Score or its related term are showing as below:
MEX:WLK'
s Beneish M-Score Range Over the Past 10 Years
Min: -2.82 Med: -2.54 Max: -0.89
Current: -2.09
During the past 13 years, the highest Beneish M-Score of Westlake was -0.89. The lowest was -2.82. And the median was -2.54.
The historical data trend for Westlake'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.
MEX:WLK vs SOLS, ESI, EMN: Beneish M-Score Comparison
For the Specialty Chemicals subindustry, Westlake'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.
Westlake Beneish M-Score vs Chemicals Industry
For the Chemicals industry and Basic Materials sector, Westlake's Beneish M-Score distribution charts can be found below:
* The bar in red indicates where Westlake's Beneish M-Score falls into.
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 Westlake 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 * 1.063
+
0.528 * 2.2244
+
0.404 * 0.8899
+
0.892 * 0.8462
+
0.115 * 0.9077
-
0.172 * SGAI
+
4.679 * TATA
-
0.327 * LVGI
-
0.172 * 1.1108
+
4.679 * -0.039155
-
0.327 * 1.1731
=
-2.23
* 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.
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.
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))
=
(22294.406 / (22294.406 + 194373.358))
/
(21581.887 / (21581.887 + 168804.105))
=
0.102897
/
0.113359
=
0.9077
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
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
=
(-29861.537 - -24183.748
-
8236.795)
/
355370.419
=
-0.039155
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.
Westlake has a M-score of -2.23 suggests that the company is unlikely to be a manipulator.
Westlake (MEX:WLK) has a Beneish M-Score of -2.09 as of Aug. 01, 2026. The Beneish M-score measures the likelihood of earnings manipulation. View historical data on Westlake and its competitors. According to the industry distribution chart, Westlake ranks #1164 out of 1525 companies in the Chemicals industry, placing it in the top 76.3%.
Is Westlake's Beneish M-Score too high?
Westlake's current Beneish M-Score is -2.09. Based on the distribution chart, Westlake ranks #1164 out of 1525 companies in the Chemicals industry, which is in the bottom quartile relative to peers. Overall, Westlake has a GF Score™ of 40/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Westlake's Beneish M-Score compare to SOLS and ESI?
According to the Chemicals industry distribution chart, Westlake ranks #1164 out of 1525 companies for Beneish M-Score. This places Westlake 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 Chemicals company?
A good Beneish M-Score depends on the Chemicals 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 Westlake and its competitors. Westlake's current Beneish M-Score is -2.09. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Westlake stock overvalued right now?
Based on GuruFocus' analysis, Westlake (MEX:WLK) is currently considered Fairly Valued. The stock's GF Value™ is MXN2,091.82, compared to a current price of MXN1,396.00 — trading 33.3% below its estimated fair value. The current Beneish M-Score is -2.09. Westlake's overall GF Score™ is 40/100 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 Westlake (MEX:WLK), the current Beneish M-Score is -2.09 as of Aug. 01, 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 Westlake (MEX:WLK) Overvalued in 2026?
Based on GuruFocus' analysis, Westlake stock appears to be undervalued.
The current stock price of MXN1,396.00 is trading 33.3% below its estimated GF Value™ of MXN2,091.82.
GuruFocus considers Westlake to be Fairly Valued.
Key valuation signals for MEX:WLK:
Beneish M-Score: -2.09
GF Value™: MXN2,091.82 vs. price of MXN1,396.00 (33.3% below fair value)
No single metric tells the full story. See the MEX:WLK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Westlake is a forward-integrated commodity chemicals firm based in Houston. It began as a single low-density polyethylene plant and expanded its capabilities to include ethylene, vinyl chloride monomers, and polyvinyl chloride over the next two decades. The acquisition of Axiall in 2016 made it a North American leader in chlor-alkali and PVC. Today, Westlake has two defined segments: performance and essential materials, and housing and infrastructure products. The HIP segment began operating in 2022 following a series of acquisitions in the building products space. The firm aims to maximize the value of its chemical production by integrating with the HIP segment, realizing the higher margins of finished commercial goods.
40GF Score
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