Jason Co (ROCO:4570) 1-Year Sharpe Ratio: -0.56 (As of Sep. 21, 2026)

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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.
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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:4570 Jason Co Ltd ROCO:4570
91 GF Score
Price NT$69.00
GF Value NT$65.75
Valuation Fairly Valued
! 5 Warning Signs
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What is Jason Co 1-Year Sharpe Ratio?

Jason Co ROCO:4570 91 1-Year Sharpe Ratio is -0.56 as of Sep. 21, 2026. GuruFocus rates ROCO:4570 with a GF Score™ of 91/100 and a GF Value™ of NT$65.75 (Fairly Valued). The stock has 5 warning signs investors should review.

The 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past year. As of today (2026-09-21), Jason Co's 1-Year Sharpe Ratio is -0.56.

Jason Co  (ROCO:4570) 1-Year Sharpe Ratio Explanation

The 1-Year Sharpe Ratio inidicates the risk-adjusted return of an investment over the past year. It is calculated as the annualized result of the average monthly excess return divided by its standard deviation over the past year. The monthly excess return is the monthly investment return minus the monthly risk-free rate (typically the 10-year Treasury Constant Maturity Rate). If the risk-free rate for a specific region is not available, U.S. data is used by default.

The greater a portfolio's Sharpe Ratio, the better its risk-adjusted performance. A negative Sharpe Ratio means the risk-free rate is greater than the portfolio’s historical or projected return, or else the portfolio's return is expected to be negative.

Jason Co 1-Year Sharpe Ratio Related Terms

ROCO:4570 vs ORLY, AZO, GPC: 1-Year Sharpe Ratio Comparison

For the Auto Parts subindustry, Jason Co's 1-Year Sharpe Ratio, along with its competitors' market caps and 1-Year Sharpe 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.

Jason Co 1-Year Sharpe Ratio vs Vehicles & Parts Industry

For the Vehicles & Parts industry and Consumer Cyclical sector, Jason Co's 1-Year Sharpe Ratio distribution charts can be found below:

* The bar in red indicates where Jason Co's 1-Year Sharpe Ratio falls into.


ROCO:4570
91GF Score
Jason Co Ltd ROCO:4570
1-Year Sharpe Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Jason Co 1-Year Sharpe Ratio Calculation

The 1-Year Sharpe Ratio measures the performance of an investment such as a stock or portfolio compared to a risk-free asset. A stock / portfolio's 1-Year Sharpe Ratio can be calculated by dividing the difference between the one-year returns of the investment and the risk-free rate, by the standard deviation of the investment returns over one year.

Frequently Asked Questions Learn more about 1-Year Sharpe Ratio →
What does a 1-Year Sharpe Ratio of -0.56 mean?
Jason Co (ROCO:4570) has a 1-Year Sharpe Ratio of -0.56 as of Sep. 21, 2026. 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk. View historical data for Jason Co and its competitors.
Is Jason Co's 1-Year Sharpe Ratio too high?
Jason Co's current 1-Year Sharpe Ratio is -0.56. Overall, Jason Co has a GF Score™ of 91/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Jason Co's 1-Year Sharpe Ratio compare to ORLY and AZO?
Jason Co's 1-Year Sharpe Ratio of -0.56 can be compared against companies in the Vehicles & Parts industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 1-Year Sharpe Ratio for a Vehicles & Parts company?
A good 1-Year Sharpe Ratio depends on the Vehicles & Parts industry context. However, 1-Year Sharpe Ratio 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 1-Year Sharpe Ratio mean?
A high 1-Year Sharpe Ratio can signal that a stock is expensive relative to its fundamentals. 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk. View historical data for Jason Co and its competitors. Jason Co's current 1-Year Sharpe Ratio is -0.56. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Jason Co stock overvalued right now?
Based on GuruFocus' analysis, Jason Co (ROCO:4570) is currently considered Fairly Valued. The stock's GF Value™ is NT$65.75, compared to a current price of NT$69.00 — trading 4.9% above its estimated fair value. The current 1-Year Sharpe Ratio is -0.56. Jason Co's overall GF Score™ is 91/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 1-Year Sharpe Ratio calculated?
1-Year Sharpe Ratio is calculated from a company's financial statements. For Jason Co (ROCO:4570), the current 1-Year Sharpe Ratio is -0.56 as of Sep. 21, 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 Jason Co (ROCO:4570) Overvalued in 2026?

Based on GuruFocus' analysis, Jason Co stock appears to be overvalued. The current stock price of NT$69.00 is trading 4.9% above its estimated GF Value™ of NT$65.75. GuruFocus considers Jason Co to be Fairly Valued.

Key valuation signals for ROCO:4570:

  • 1-Year Sharpe Ratio: -0.56
  • GF Value™: NT$65.75 vs. price of NT$69.00 (4.9% above fair value)
  • GF Score™: 91/100 with 5 warning signs

No single metric tells the full story. See the ROCO:4570 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Jason Co Business Description

Address No. 3-35 Zhonghe Road, Zhonghe Village, Ligang Township, Pingtung County, Zhonghe, TWN, 905
Jason Co Ltd is a Taiwan-based automobile parts company. It is engaged in the manufacturing of steering and suspension products.
91GF Score

Get the complete analysis for ROCO:4570

1-Year Sharpe Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$69.00
Price
NT$65.75
GF Value