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The Relative Strength Index (RSI) is a momentum oscillator that measures the speed and change of price movements. The RSI is most typically used on a 14-day period, measured on a scale from 0 to 100. Traditionally, an asset is considered overbought or overvalued when the RSI is above 70 and oversold or undervalued when it is below 30. A shorter period RSI is more reactive to recent price changes, so it can show early signs of reversals. 9-Day RSI is sometimes used together with 14-Day RSI in a two period divergence strategy.
As of today (2026-07-21), Asia Optical Co's 9-Day RSI is 27.41.
The industry rank for Asia Optical Co's 9-Day RSI or its related term are showing as below:
TPE:3019's 9-Day RSI is ranked better than 72.47% of 2528
companies
in the Hardware industry
Industry Median: 35.49
vs TPE:3019: 27.41
Asia Optical Co (TPE:3019) 9-Day RSI Explanation
The Relative Strength Index (RSI), developed by J. Welles Wilder in his book “New Concepts in Technical Trading Systems.”, is a momentum oscillator that measures the speed and change of price movements. The RSI is most typically used on a 14-day period, measured on a scale from 0 to 100.
Traditionally, an asset is considered overbought or overvalued when the RSI is above 70 and oversold or undervalued when it is below 30. A RSI surpasses the 30 level indicates a bullish sign, when it slides below 70 level, it’s a bearish sign. This level can be adjusted depending on the security’s pattern and the market’s underlying trend. In an uptrend or bullish market, the RSI might range within a higher interval, investors could set the support level higher. If a downtrend or bearish market occurs, investors may need to lower the resistance level.
RSI can also be used in trading techniques to indicate the trading signal, such as Divergences and Swing Rejections. A shorter period RSI is more reactive to recent price changes, so it can show early signs of reversals. 9-Day RSI is sometimes used together with 14-Day RSI in a two period divergence strategy.
Asia Optical Co 9-Day RSI Related Terms
TPE:3019 vs APH, GLW: 9-Day RSI Comparison
For the Electronic Components subindustry, Asia Optical Co's 9-Day RSI, along with its competitors' market caps and 9-Day RSI 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.
Asia Optical Co 9-Day RSI vs Hardware Industry
For the Hardware industry and Technology sector, Asia Optical Co's 9-Day RSI distribution charts can be found below:
* The bar in red indicates where Asia Optical Co's 9-Day RSI falls into.
* Note that the formula uses a positive value for the average loss.
* 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.
Asia Optical Co (TPE:3019) has a 9-Day RSI of 27.41 as of Jul. 21, 2026. According to the industry distribution chart, Asia Optical Co ranks #696 out of 2528 companies in the Hardware industry, placing it in the top 27.5%.
Is Asia Optical Co's 9-Day RSI too high?
Asia Optical Co's current 9-Day RSI is 27.41. The Hardware industry median 9-Day RSI is 35.49. Asia Optical Co's value of 27.41 is 22.8% below this industry median. Based on the distribution chart, Asia Optical Co ranks #696 out of 2528 companies in the Hardware industry, which is above the industry midpoint. Overall, Asia Optical Co has a GF Score™ of 83/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Asia Optical Co's 9-Day RSI compare to APH and GLW?
According to the Hardware industry distribution chart, Asia Optical Co ranks #696 out of 2528 companies for 9-Day RSI. This puts Asia Optical Co in the upper half of its industry. The industry median 9-Day RSI is 35.49. Asia Optical Co's value of 27.41 is 22.8% below this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 9-Day RSI for a Hardware company?
The median 9-Day RSI among Hardware companies is 35.49, based on 2,528 companies in the industry. Companies in the top quartile (top 25%) have a 9-Day RSI significantly above this median, while those in the bottom quartile fall well below. However, 9-Day RSI should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Asia Optical Co's current 9-Day RSI of 27.41 is 22.8% 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 9-Day RSI mean?
A high 9-Day RSI can signal that a stock is expensive relative to its fundamentals. For the Hardware industry, the median 9-Day RSI is 35.49 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Asia Optical Co's current 9-Day RSI is 27.41. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Asia Optical Co stock overvalued right now?
Based on GuruFocus' analysis, Asia Optical Co (TPE:3019) is currently considered Fairly Valued. The stock's GF Value™ is NT$138.45, compared to a current price of NT$129.00 — trading 6.8% below its estimated fair value. The current 9-Day RSI is 27.41 and 22.8% below the Hardware industry median of 35.49. Asia Optical Co's overall GF Score™ is 83/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 9-Day RSI calculated?
9-Day RSI is calculated from a company's financial statements. For Asia Optical Co (TPE:3019), the current 9-Day RSI is 27.41 as of Jul. 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 Asia Optical Co (TPE:3019) Overvalued in 2026?
Based on GuruFocus' analysis, Asia Optical Co stock appears to be undervalued.
The current stock price of NT$129.00 is trading 6.8% below its estimated GF Value™ of NT$138.45.
GuruFocus considers Asia Optical Co to be Fairly Valued.
Key valuation signals for TPE:3019:
9-Day RSI: 27.41
GF Value™: NT$138.45 vs. price of NT$129.00 (6.8% below fair value)
Industry Position: 22.8% below the Hardware median (#696 of 2528)
No single metric tells the full story. See the TPE:3019 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Asia Optical Co Inc is engaged in the manufacturing and sale of cameras, rangefinders, riflescopes, photocopier lens, scanner lens and optical components. The companies reportable segments included optical components, contact image sensor modules, optronics components, optronics products and digital camera. The majority of the revenue is generated from optical components. The company operates in two principal geographical areas Asia and America.
83GF Score
Get the complete analysis for TPE:3019
9-Day RSI is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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