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.
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.
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, TAC Co's share price is 円347.00.
TAC Co's Revenue per Share for the trailing twelve months (TTM) ended in Sep. 2025 was 円1,070.63. Hence, TAC Co's PS Ratio for today is 0.32.
Warning Sign:
TAC Co Ltd stock PS Ratio (=0.33) is close to 10-year high of 0.34.
The historical rank and industry rank for TAC Co's PS Ratio or its related term are showing as below:
TSE:4319'
s PS Ratio Range Over the Past 10 Years
Min: 0.12 Med: 0.2 Max: 0.34
Current: 0.32
During the past 13 years, TAC Co's highest PS Ratio was 0.34. The lowest was 0.12. And the median was 0.20.
TSE:4319's PS Ratio is not ranked
in the Education industry.
Industry Median: 1.2
vs TSE:4319: 0.32
TAC Co's Revenue per Sharefor the
six
months ended in Sep. 2025 was 円570.95.
Its Revenue per Share for the trailing twelve months (TTM) ended in Sep. 2025 was 円1,070.63.
Warning Sign:
TAC Co Ltd 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 TAC Co was 2.10% per year.
During the past 3 years, the average Revenue per Share Growth Rate was -1.50% per year.
During the past 5 years, the average Revenue per Share Growth Rate was -0.80% per year.
During the past 10 years, the average Revenue per Share Growth Rate was -0.20% per year.
During the past 13 years, TAC Co's highest 3-Year average Revenue per Share Growth Rate was 6.40% per year. The lowest was -5.90% per year. And the median was -0.70% per year.
Back to Basics: PS Ratio
TAC Co (TSE:4319) 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.
TAC Co PS Ratio Related Terms
TAC Co PS Ratio Historical Data
* Premium members only.
The historical data trend for TAC Co's PS Ratio 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.
For the Education & Training Services subindustry, TAC Co'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.
TAC Co PS Ratio vs Education Industry
For the Education industry and Consumer Defensive sector, TAC Co's PS Ratio distribution charts can be found below:
* The bar in red indicates where TAC Co'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.
TAC Co's Share Price of today is 円347.00.
For company reported semi-annually, GuruFocus uses latest annual data as the TTM data. TAC Co's Revenue per Share for the trailing twelve months (TTM) ended in Sep. 2025 was 円1,070.63.
* 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:
TAC Co (TSE:4319) has a PS Ratio of 0.32 as of Jul. 19, 2026. Price-to-Sales ratio is the ratio of share price to a company's revenue per share. View historical data on TAC Co and its competitors. This is 60% above median its historical median of 0.20. Over the past decade, TAC Co's PS Ratio has ranged from 0.12 to 0.34.
Is TAC Co's PS Ratio too high?
TAC Co's current PS Ratio of 0.32 is 60% above median its 10-year median of 0.20. Over the past 10 years, this metric has ranged from a low of 0.12 to a high of 0.34. The Education industry median PS Ratio is 1.20. TAC Co's value of 0.32 is 73.3% below this industry median. Overall, TAC Co has a GF Score™ of 42/100, reflecting its overall financial health beyond just this single metric.
How does TAC Co's PS Ratio compare to EDU and TAL?
TAC Co's PS Ratio of 0.32 can be compared against companies in the Education industry. The industry median PS Ratio is 1.20. TAC Co's value of 0.32 is 73.3% below this benchmark. Historically, TAC Co's own PS Ratio has ranged from 0.12 to 0.34 over the past decade. While the company's 10-year median is 0.20 vs. the industry median of 1.20, TAC Co 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 Education company?
The median PS Ratio among Education companies is 1.20, based on 256 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. TAC Co's current PS Ratio of 0.32 is 73.3% 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 TAC Co and its competitors. For the Education industry, the median PS Ratio is 1.20 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. TAC Co's current PS Ratio is 0.32, which is 60% above median its own 10-year median of 0.20. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is TAC Co stock overvalued right now?
TAC Co (TSE:4319) has a current PS Ratio of 0.32. The stock's GF Value™ is 円192.17, compared to a current price of 円347.00 — trading 80.6% above its estimated fair value. The current PS Ratio is 0.32, which is 60% above median its 10-year median of 0.20 and 73.3% below the Education industry median of 1.20. TAC Co's overall GF Score™ is 42/100 with 10 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 TAC Co (TSE:4319), the current PS Ratio is 0.32 as of Jul. 19, 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 TAC Co (TSE:4319) Overvalued in 2026?
Based on GuruFocus' analysis, TAC Co stock appears to be overvalued.
The current stock price of 円347.00 is trading 80.6% above its estimated GF Value™ of 円192.17.
Key valuation signals for TSE:4319:
PS Ratio: 0.32 (60% above median its 10-year median of 0.20)
GF Value™: 円192.17 vs. price of 円347.00 (80.6% above fair value)
Industry Position: 73.3% below the Education median
No single metric tells the full story. See the TSE:4319 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
TAC Co Ltd is a Japan-based company engages in providing educational services. The company is engaged in the personal education, corporate training, publishing, and manpower businesses. Its personal education business division offers preparatory courses for qualifications for individual students and provides training for corporations.
42GF Score
Get the complete analysis for TSE:4319
PS Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
TSE:4319 has been successfully added to your 
