Formosa PetrochemicalTPE:6505 -4.29%89 Median PS Value is NT$90.61 as of Jun. 28, 2026, which is 100% below its 10-year median of 0.77. GuruFocus rates TPE:6505 with a GF Score™ of 89/100 and a GF Value™ of NT$57.54 (Fairly Valued). The stock has 3 warning signs investors should review. Among 555 Oil & Gas companies, Formosa Petrochemical ranks better than 83.24% on this metric.
This valuation method assumes that the stock valuation will revert to its historical (10-Year) median in terms of PS Ratio. The reason we use PS Ratio instead of PE Ratio or PB Ratio is because PS Ratio is independent of profit margin, and can be applied to a broader range of situations.
The historical rank and industry rank for Formosa Petrochemical's Median PS Value or its related term are showing as below:
TPE:6505'
s Price-to-Median-PS-Value Range Over the Past 10 Years
Min: 0.36 Med: 0.77 Max: 1.83
Current: 0.59
During the past 13 years, the highest Price to Median PS Value of Formosa Petrochemical was 1.83. The lowest was 0.36. And the median was 0.77.
TPE:6505's Price-to-Median-PS-Value is ranked better than 83.24% of 555
companies
in the Oil & Gas industry
Industry Median: 1.06
vs TPE:6505: 0.59
Formosa Petrochemical (TPE:6505) Median PS Value Explanation
This valuation method assumes that the stock valuation will revert to its historical (10-Year) mean in terms of PS Ratio. The reason we use PS Ratio instead of PE Ratio or PB Ratio
is because PS Ratio is independent of profit margin, and can be applied to a broader range of situations.
It also assumes that over time the profit margin is constant. If a company increases its profit margin to a sustainable level, this value might under-estimate its value. If it has permanent declined profit margins, this may over-estimate the company's value.
Formosa Petrochemical's Price to Median PS Value for today is calculated as
Price to Median PS Value
=
Share Price
/
Median PS Value
=
53.50
/
90.61
=
0.59
* 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 Petrochemical Median PS Value Related Terms
Formosa Petrochemical Median PS Value Historical Data
* Premium members only.
The historical data trend for Formosa Petrochemical's Median PS Value 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.
TPE:6505 vs VLO, MPC, PSX: Median PS Value Comparison
For the Oil & Gas Refining & Marketing subindustry, Formosa Petrochemical's Price-to-Median-PS-Value, along with its competitors' market caps and Price-to-Median-PS-Value 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 Price-to-Median-PS-Value vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Formosa Petrochemical's Price-to-Median-PS-Value distribution charts can be found below:
* The bar in red indicates where Formosa Petrochemical's Price-to-Median-PS-Value falls into.
10-Year Median PS Ratio is 1.378.
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$65.753.
* 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 Petrochemical (TPE:6505) has a Median PS Value of NT$90.61 as of Jun. 28, 2026. Median price-sales value is the stock value based on a company's 10-year median price-sales ratio, View historical data on Formosa Petrochemical and its competitors. This is 11668% above median its historical median of 0.77. Over the past decade, Formosa Petrochemical's Median PS Value has ranged from 0.36 to 1.83. According to the industry distribution chart, Formosa Petrochemical ranks #93 out of 555 companies in the Oil & Gas industry, placing it in the top 16.8%.
Is Formosa Petrochemical's Median PS Value too high?
Formosa Petrochemical's current Median PS Value of NT$90.61 is 11668% above median its 10-year median of 0.77. Over the past 10 years, this metric has ranged from a low of 0.36 to a high of 1.83. Based on the distribution chart, Formosa Petrochemical ranks #93 out of 555 companies in the Oil & Gas industry, which is in the top quartile — a strong position relative to peers. Overall, Formosa Petrochemical has a GF Score™ of 89/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Formosa Petrochemical's Median PS Value compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Formosa Petrochemical ranks #93 out of 555 companies for Median PS Value. This places Formosa Petrochemical in the top 17% of its industry — outperforming the majority of peers. The industry median Median PS Value is 1.06. Historically, Formosa Petrochemical's own Median PS Value has ranged from 0.36 to 1.83 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Median PS Value for an Oil & Gas company?
The median Median PS Value among Oil & Gas companies is 1.06, based on 555 companies in the industry. Companies in the top quartile (top 25%) have a Median PS Value significantly above this median, while those in the bottom quartile fall well below. However, Median PS Value 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 Median PS Value mean?
A high Median PS Value can signal that a stock is expensive relative to its fundamentals. Median price-sales value is the stock value based on a company's 10-year median price-sales ratio, View historical data on Formosa Petrochemical and its competitors. For the Oil & Gas industry, the median Median PS Value is 1.06 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Formosa Petrochemical's current Median PS Value is NT$90.61, which is 11668% above median its own 10-year median of 0.77. 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$57.54, compared to a current price of NT$53.50 — trading 7% below its estimated fair value. The current Median PS Value is NT$90.61, which is 11668% above median its 10-year median of 0.77. Formosa Petrochemical's overall GF Score™ is 89/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Median PS Value calculated?
Median PS Value is calculated from a company's financial statements. For Formosa Petrochemical (TPE:6505), the current Median PS Value is NT$90.61 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 Petrochemical (TPE:6505) Overvalued in 2026?
Based on GuruFocus' analysis, Formosa Petrochemical stock appears to be undervalued.
The current stock price of NT$53.50 is trading 7% below its estimated GF Value™ of NT$57.54.
GuruFocus considers Formosa Petrochemical to be Fairly Valued.
Key valuation signals for TPE:6505:
Median PS Value: NT$90.61 (11668% above median its 10-year median of 0.77)
GF Value™: NT$57.54 vs. price of NT$53.50 (7% below fair value)
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.
89GF Score
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