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 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 (2026-07-29), Ledlink Optics's 9-Day RSI is 28.20.
The industry rank for Ledlink Optics's 9-Day RSI or its related term are showing as below:
ROCO:5230's 9-Day RSI is ranked better than 82.48% of 2528
companies
in the Hardware industry
Industry Median: 38.09
vs ROCO:5230: 28.20
Ledlink Optics (ROCO:5230) 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.
Ledlink Optics 9-Day RSI Related Terms
ROCO:5230 vs APH, GLW, TEL: 9-Day RSI Comparison
For the Electronic Components subindustry, Ledlink Optics'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.
Ledlink Optics 9-Day RSI vs Hardware Industry
For the Hardware industry and Technology sector, Ledlink Optics's 9-Day RSI distribution charts can be found below:
* The bar in red indicates where Ledlink Optics'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.
Ledlink Optics (ROCO:5230) has a 9-Day RSI of 28.20 as of Jul. 29, 2026. According to the industry distribution chart, Ledlink Optics ranks #443 out of 2528 companies in the Hardware industry, placing it in the top 17.5%.
Is Ledlink Optics' 9-Day RSI too high?
Ledlink Optics' current 9-Day RSI is 28.20. The Hardware industry median 9-Day RSI is 38.09. Ledlink Optics' value of 28.20 is 26% below this industry median. Based on the distribution chart, Ledlink Optics ranks #443 out of 2528 companies in the Hardware industry, which is in the top quartile — a strong position relative to peers. Overall, Ledlink Optics has a GF Score™ of 67/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Ledlink Optics' 9-Day RSI compare to APH and GLW?
According to the Hardware industry distribution chart, Ledlink Optics ranks #443 out of 2528 companies for 9-Day RSI. This places Ledlink Optics in the top 18% of its industry — outperforming the majority of peers. The industry median 9-Day RSI is 38.09. Ledlink Optics' value of 28.20 is 26% 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 38.09, 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. Ledlink Optics's current 9-Day RSI of 28.20 is 26% 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 38.09 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Ledlink Optics's current 9-Day RSI is 28.20. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ledlink Optics stock overvalued right now?
Based on GuruFocus' analysis, Ledlink Optics (ROCO:5230) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$20.28, compared to a current price of NT$17.40 — trading 14.2% below its estimated fair value. The current 9-Day RSI is 28.20 and 26% below the Hardware industry median of 38.09. Ledlink Optics' overall GF Score™ is 67/100 with 8 warning signs 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 Ledlink Optics (ROCO:5230), the current 9-Day RSI is 28.20 as of Jul. 29, 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 Ledlink Optics (ROCO:5230) Overvalued in 2026?
Based on GuruFocus' analysis, Ledlink Optics stock appears to be undervalued.
The current stock price of NT$17.40 is trading 14.2% below its estimated GF Value™ of NT$20.28.
GuruFocus considers Ledlink Optics to be Modestly Undervalued.
Key valuation signals for ROCO:5230:
9-Day RSI: 28.20
GF Value™: NT$20.28 vs. price of NT$17.40 (14.2% below fair value)
Industry Position: 26% below the Hardware median (#443 of 2528)
No single metric tells the full story. See the ROCO:5230 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Ledlink Optics Inc is engaged in designing and manufacturing optics for emerging solid-state lighting companies such as Cree, Edison, Nichia, Osram, Lumileds, Samsung, Seoul, and other LED manufacturers. It offers lenses in a variety of packages with numerous beam pattern options and sizes, such as residential lighting, commercial lighting, street lighting, and architectural lighting.
67GF Score
Get the complete analysis for ROCO:5230
9-Day RSI is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCO:5230 has been successfully added to your 
