Formosa PetrochemicalTPE:6505 88 PS Ratio is 0.89 as of Jul. 11, 2026, which is 34% below its 10-year median of 1.35. GuruFocus rates TPE:6505 with a GF Score™ of 88/100 and a GF Value™ of NT$57.77 (Fairly Valued). The stock has 7 warning signs investors should review. Among 878 Oil & Gas companies, Formosa Petrochemical ranks better than 62.76% on this metric.
The PS Ratio, or Price-to-Sales ratio, or Price/Sales, is a financial ratio used to compare a company's market price to its Revenue per Share. As of today, Formosa Petrochemical's share price is NT$58.80.
Formosa Petrochemical's Revenue per Share for the trailing twelve months (TTM) ended in Dec. 2025 was NT$65.75. Hence, Formosa Petrochemical's PS Ratio for today is 0.89.
Warning Sign:
Formosa Petrochemical Corp stock PS Ratio (=0.89) is close to 2-year high of 0.94.
The historical rank and industry rank for Formosa Petrochemical's PS Ratio or its related term are showing as below:
TPE:6505'
s PS Ratio Range Over the Past 10 Years
Min: 0.48 Med: 1.35 Max: 2.54
Current: 0.89
During the past 13 years, Formosa Petrochemical's highest PS Ratio was 2.54. The lowest was 0.48. And the median was 1.35.
TPE:6505's PS Ratio is ranked better than 62.76% of 878
companies
in the Oil & Gas industry
Industry Median: 1.3
vs TPE:6505: 0.89
Formosa Petrochemical Corp revenue per share has been in decline over the past 3 years.
During the past 12 months, the average Revenue per Share Growth Rate of Formosa Petrochemical was -5.70% per year.
During the past 3 years, the average Revenue per Share Growth Rate was -9.60% per year.
During the past 5 years, the average Revenue per Share Growth Rate was 6.10% per year.
During the past 10 years, the average Revenue per Share Growth Rate was 1.20% per year.
During the past 13 years, Formosa Petrochemical's highest 3-Year average Revenue per Share Growth Rate was 19.70% per year. The lowest was -16.30% per year. And the median was 2.30% per year.
Back to Basics: PS Ratio
Formosa Petrochemical (TPE:6505) PS Ratio Explanation
The PS Ratio is an excellent valuation indicator if you want to compare a stock with its historical valuation or with the stocks in the same industry. The PS Ratio works especially well when you want to compare the stock's current valuation with its historical valuation. The PS Ratio is a great valuation tool for evaluating cyclical businesses where the PE Ratio works poorly. It works the best when comparing the current valuation with the historical valuation because over time, a company's profit margin tends to revert to the mean.
When the PS Ratio is applied to the whole stock market, it can be used to evaluate the current market valuation and projected returns. In this case, the price is the total market cap of all stocks that are traded, and sales are the GDP of the country. This is how Warren Buffett estimates the broad market valuation and project future returns.
The PS Ratio does not tell you how cheap or expensive the stock is. It cannot be used to compare companies in different industries. It works better for companies within the same industry because these companies tend to have similar capital structures and profit margins. It works the best when comparing a company with itself in the past.
* 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.
For the Oil & Gas Refining & Marketing subindustry, Formosa Petrochemical's PS Ratio, along with its competitors' market caps and PS Ratio 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 Petrochemical PS Ratio vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Formosa Petrochemical's PS Ratio distribution charts can be found below:
* The bar in red indicates where Formosa Petrochemical's PS Ratio falls into.
The PS Ratio, or Price-to-Sales ratio, or Price/Sales, is a financial ratio used to compare a company's market price to its Revenue per Share. It is a ratio widely used to value stocks and it was first used by Ken Fisher.
Formosa Petrochemical's Share Price of today is NT$58.80. Formosa Petrochemical's Revenue per Share for the trailing twelve months (TTM) ended in Dec. 2025 adds up the quarterly data reported by the company within the most recent 12 months, which was NT$65.75.
* 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.
It can also be calculated from the numbers for the whole company:
Formosa Petrochemical (TPE:6505) has a PS Ratio of 0.89 as of Jul. 11, 2026. Price-to-Sales ratio is the ratio of share price to a company's revenue per share. View historical data on Formosa Petrochemical and its competitors. This is 34% below median its historical median of 1.35. Over the past decade, Formosa Petrochemical's PS Ratio has ranged from 0.48 to 2.54. According to the industry distribution chart, Formosa Petrochemical ranks #327 out of 878 companies in the Oil & Gas industry, placing it in the top 37.2%.
Is Formosa Petrochemical's PS Ratio too high?
Formosa Petrochemical's current PS Ratio of 0.89 is 34% below median its 10-year median of 1.35. Over the past 10 years, this metric has ranged from a low of 0.48 to a high of 2.54. The Oil & Gas industry median PS Ratio is 1.30. Formosa Petrochemical's value of 0.89 is 31.5% below this industry median. Based on the distribution chart, Formosa Petrochemical ranks #327 out of 878 companies in the Oil & Gas industry, which is above the industry midpoint. Overall, Formosa Petrochemical has a GF Score™ of 88/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Formosa Petrochemical's PS Ratio compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Formosa Petrochemical ranks #327 out of 878 companies for PS Ratio. This puts Formosa Petrochemical in the upper half of its industry. The industry median PS Ratio is 1.30. Formosa Petrochemical's value of 0.89 is 31.5% below this benchmark. Historically, Formosa Petrochemical's own PS Ratio has ranged from 0.48 to 2.54 over the past decade. While the company's 10-year median is 1.35 vs. the industry median of 1.30, Formosa Petrochemical has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PS Ratio for an Oil & Gas company?
The median PS Ratio among Oil & Gas companies is 1.30, based on 878 companies in the industry. Companies in the top quartile (top 25%) have a PS Ratio significantly above this median, while those in the bottom quartile fall well below. However, PS Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Formosa Petrochemical's current PS Ratio of 0.89 is 31.5% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high PS Ratio mean?
A high PS Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Sales ratio is the ratio of share price to a company's revenue per share. View historical data on Formosa Petrochemical and its competitors. For the Oil & Gas industry, the median PS Ratio is 1.30 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Formosa Petrochemical's current PS Ratio is 0.89, which is 34% below median its own 10-year median of 1.35. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Formosa Petrochemical stock overvalued right now?
Based on GuruFocus' analysis, Formosa Petrochemical (TPE:6505) is currently considered Fairly Valued. The stock's GF Value™ is NT$57.77, compared to a current price of NT$58.80 — trading 1.8% above its estimated fair value. The current PS Ratio is 0.89, which is 34% below median its 10-year median of 1.35 and 31.5% below the Oil & Gas industry median of 1.30. Formosa Petrochemical's overall GF Score™ is 88/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PS Ratio calculated?
PS Ratio is calculated from a company's financial statements. For Formosa Petrochemical (TPE:6505), the current PS Ratio is 0.89 as of Jul. 11, 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 Petrochemical (TPE:6505) Overvalued in 2026?
Based on GuruFocus' analysis, Formosa Petrochemical stock appears to be overvalued.
The current stock price of NT$58.80 is trading 1.8% above its estimated GF Value™ of NT$57.77.
GuruFocus considers Formosa Petrochemical to be Fairly Valued.
Key valuation signals for TPE:6505:
PS Ratio: 0.89 (34% below median its 10-year median of 1.35)
GF Value™: NT$57.77 vs. price of NT$58.80 (1.8% above fair value)
Industry Position: 31.5% below the Oil & Gas median (#327 of 878)
No single metric tells the full story. See the TPE:6505 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Formosa Petrochemical Corp engages in the Operation of refinery of petroleum and integrated manufacture of hydrocarbon. The firm operates in two segments. The Petrochemical segment that derives majority revenue engages in producing and selling petroleum, and petrochemical products. The Public utility segment engages in producing and selling water, electricity, and steam. Its product offerings comprise gasoline, jet fuel, kerosene, fuel oil, asphalt, sulfur, lubricant, diesel, naphtha, and liquid petroleum gas.
88GF Score
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