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 (2026-08-06), GCS Holdings's 9-Day RSI is 60.63.
The industry rank for GCS Holdings's 9-Day RSI or its related term are showing as below:
ROCO:4991's 9-Day RSI is ranked worse than 74.44% of 1033
companies
in the Semiconductors industry
Industry Median: 47.38
vs ROCO:4991: 60.63
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.
GCS Holdings 9-Day RSI Related Terms
ROCO:4991 vs AMAT, LRCX, KLAC: 9-Day RSI Comparison
For the Semiconductor Equipment & Materials subindustry, GCS Holdings'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.
GCS Holdings 9-Day RSI vs Semiconductors Industry
For the Semiconductors industry and Technology sector, GCS Holdings's 9-Day RSI distribution charts can be found below:
* The bar in red indicates where GCS Holdings'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.
GCS Holdings (ROCO:4991) has a 9-Day RSI of 60.63 as of Aug. 06, 2026. According to the industry distribution chart, GCS Holdings ranks #769 out of 1033 companies in the Semiconductors industry, placing it in the top 74.4%.
Is GCS Holdings' 9-Day RSI too high?
GCS Holdings' current 9-Day RSI is 60.63. The Semiconductors industry median 9-Day RSI is 47.38. GCS Holdings' value of 60.63 is 28% above this industry median. Based on the distribution chart, GCS Holdings ranks #769 out of 1033 companies in the Semiconductors industry, which is below the industry midpoint. Overall, GCS Holdings has a GF Score™ of 61/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does GCS Holdings' 9-Day RSI compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, GCS Holdings ranks #769 out of 1033 companies for 9-Day RSI. This places GCS Holdings in the lower half of its industry. The industry median 9-Day RSI is 47.38. GCS Holdings' value of 60.63 is 28% above 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 Semiconductors company?
The median 9-Day RSI among Semiconductors companies is 47.38, based on 1,033 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. GCS Holdings's current 9-Day RSI of 60.63 is 28% above 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 Semiconductors industry, the median 9-Day RSI is 47.38 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. GCS Holdings's current 9-Day RSI is 60.63. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is GCS Holdings stock overvalued right now?
Based on GuruFocus' analysis, GCS Holdings (ROCO:4991) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$112.62, compared to a current price of NT$469.00 — trading 316.4% above its estimated fair value. The current 9-Day RSI is 60.63 and 28% above the Semiconductors industry median of 47.38. GCS Holdings' overall GF Score™ is 61/100. 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 GCS Holdings (ROCO:4991), the current 9-Day RSI is 60.63 as of Aug. 06, 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 GCS Holdings (ROCO:4991) Overvalued in 2026?
Based on GuruFocus' analysis, GCS Holdings stock appears to be overvalued.
The current stock price of NT$469.00 is trading 316.4% above its estimated GF Value™ of NT$112.62.
GuruFocus considers GCS Holdings to be Significantly Overvalued.
Key valuation signals for ROCO:4991:
9-Day RSI: 60.63
GF Value™: NT$112.62 vs. price of NT$469.00 (316.4% above fair value)
Industry Position: 28% above the Semiconductors median (#769 of 1033)
No single metric tells the full story. See the ROCO:4991 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
GCS Holdings Inc through its subsidiaries, is engaged in the manufacturing of compound semiconductor wafers and foundry-related services as well as the licensing of intellectual property. It is also engaged in the research, development, manufacture, and sales of optoelectronics technology products. Its portfolio offerings include Radio Frequency Integrated Circuits (RFIC) and millimeter-wave integrated circuits for the wireless markets, power devices for power electronics, and Photodetectors and Lasers for the optical communications market. Geographically, the company generates a majority of its revenue from China and the rest from the United States, Taiwan, and other markets.
61GF Score
Get the complete analysis for ROCO:4991
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:4991 has been successfully added to your 
