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.
HSTC:SII's 9-Day RSI is ranked better than 88.95% of 1883
companies
in the Construction industry
Industry Median: 47.63
vs HSTC:SII: 30.49
Sai Gon Water Infrastructure (HSTC:SII) 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.
Sai Gon Water Infrastructure 9-Day RSI Related Terms
HSTC:SII vs PWR, FIX, EME: 9-Day RSI Comparison
For the Engineering & Construction subindustry, Sai Gon Water Infrastructure'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.
Sai Gon Water Infrastructure 9-Day RSI vs Construction Industry
For the Construction industry and Industrials sector, Sai Gon Water Infrastructure's 9-Day RSI distribution charts can be found below:
* The bar in red indicates where Sai Gon Water Infrastructure's 9-Day RSI falls into.
Sai Gon Water Infrastructure (HSTC:SII) 9-Day RSI Calculation
The formula for calculating RSI is:
RSI
=
100
–
[ 100
/
( 1 + Average Gain
/
Average Loss )]
* 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.
Sai Gon Water Infrastructure (HSTC:SII) has a 9-Day RSI of 30.49 as of Jul. 03, 2026. According to the industry distribution chart, Sai Gon Water Infrastructure ranks #208 out of 1883 companies in the Construction industry, placing it in the top 11%.
Is Sai Gon Water Infrastructure's 9-Day RSI too high?
Sai Gon Water Infrastructure's current 9-Day RSI is 30.49. The Construction industry median 9-Day RSI is 47.63. Sai Gon Water Infrastructure's value of 30.49 is 36% below this industry median. Based on the distribution chart, Sai Gon Water Infrastructure ranks #208 out of 1883 companies in the Construction industry, which is in the top quartile — a strong position relative to peers. Overall, Sai Gon Water Infrastructure has a GF Score™ of 76/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Sai Gon Water Infrastructure's 9-Day RSI compare to PWR and FIX?
According to the Construction industry distribution chart, Sai Gon Water Infrastructure ranks #208 out of 1883 companies for 9-Day RSI. This places Sai Gon Water Infrastructure in the top 11% of its industry — outperforming the majority of peers. The industry median 9-Day RSI is 47.63. Sai Gon Water Infrastructure's value of 30.49 is 36% 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 Construction company?
The median 9-Day RSI among Construction companies is 47.63, based on 1,883 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. Sai Gon Water Infrastructure's current 9-Day RSI of 30.49 is 36% 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 Construction industry, the median 9-Day RSI is 47.63 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Sai Gon Water Infrastructure's current 9-Day RSI is 30.49. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sai Gon Water Infrastructure stock overvalued right now?
Based on GuruFocus' analysis, Sai Gon Water Infrastructure (HSTC:SII) is currently considered Modestly Undervalued. The stock's GF Value™ is ₫20,353.00, compared to a current price of ₫16,000.00 — trading 21.4% below its estimated fair value. The current 9-Day RSI is 30.49 and 36% below the Construction industry median of 47.63. Sai Gon Water Infrastructure's overall GF Score™ is 76/100 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 Sai Gon Water Infrastructure (HSTC:SII), the current 9-Day RSI is 30.49 as of Jul. 03, 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 Sai Gon Water Infrastructure (HSTC:SII) Overvalued in 2026?
Based on GuruFocus' analysis, Sai Gon Water Infrastructure stock appears to be undervalued.
The current stock price of ₫16,000.00 is trading 21.4% below its estimated GF Value™ of ₫20,353.00.
GuruFocus considers Sai Gon Water Infrastructure to be Modestly Undervalued.
Key valuation signals for HSTC:SII:
9-Day RSI: 30.49
GF Value™: ₫20,353.00 vs. price of ₫16,000.00 (21.4% below fair value)
Industry Position: 36% below the Construction median (#208 of 1883)
No single metric tells the full story. See the HSTC:SII stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Sai Gon Water Infrastructure Corp is a Vietnam-based company engaged in providing solutions for water in water and sewage treatment industry. The company offers water and wastewater management services to municipal entities, businesses, and manufacturers. The main activities of the company include investment, supplying technology solutions, and operation services for water supply and sewage treatment entities.
76GF Score
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