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.
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.
Amprius Technologies 9-Day RSI Related Terms
AMPX vs PLPC, EOSE, FCEL: 9-Day RSI Comparison
For the Electrical Equipment & Parts subindustry, Amprius Technologies'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.
Amprius Technologies 9-Day RSI vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Amprius Technologies's 9-Day RSI distribution charts can be found below:
* The bar in red indicates where Amprius Technologies'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.
Amprius Technologies (AMPX) has a 9-Day RSI of 26.09 as of Jul. 17, 2026. According to the industry distribution chart, Amprius Technologies ranks #280 out of 3124 companies in the Industrial Products industry, placing it in the top 9%.
Is Amprius Technologies' 9-Day RSI too high?
Amprius Technologies' current 9-Day RSI is 26.09. The Industrial Products industry median 9-Day RSI is 42.69. Amprius Technologies' value of 26.09 is 38.9% below this industry median. Based on the distribution chart, Amprius Technologies ranks #280 out of 3124 companies in the Industrial Products industry, which is in the top quartile — a strong position relative to peers. Overall, Amprius Technologies has a GF Score™ of 79/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Amprius Technologies' 9-Day RSI compare to PLPC and EOSE?
According to the Industrial Products industry distribution chart, Amprius Technologies ranks #280 out of 3124 companies for 9-Day RSI. This places Amprius Technologies in the top 9% of its industry — outperforming the majority of peers. The industry median 9-Day RSI is 42.69. Amprius Technologies' value of 26.09 is 38.9% 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 an Industrial Products company?
The median 9-Day RSI among Industrial Products companies is 42.69, based on 3,124 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. Amprius Technologies's current 9-Day RSI of 26.09 is 38.9% 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 Industrial Products industry, the median 9-Day RSI is 42.69 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Amprius Technologies's current 9-Day RSI is 26.09. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Amprius Technologies stock overvalued right now?
Based on GuruFocus' analysis, Amprius Technologies (AMPX) is currently considered Possible Value Trap. The stock's GF Value™ is $17.05, compared to a current price of $10.16 — trading 40.4% below its estimated fair value. The current 9-Day RSI is 26.09 and 38.9% below the Industrial Products industry median of 42.69. Amprius Technologies' overall GF Score™ is 79/100 with 3 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 Amprius Technologies (AMPX), the current 9-Day RSI is 26.09 as of Jul. 17, 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 Amprius Technologies (AMPX) Overvalued in 2026?
Based on GuruFocus' analysis, Amprius Technologies stock appears to be undervalued.
The current stock price of $10.16 is trading 40.4% below its estimated GF Value™ of $17.05.
GuruFocus considers Amprius Technologies to be Possible Value Trap.
Key valuation signals for AMPX:
9-Day RSI: 26.09
GF Value™: $17.05 vs. price of $10.16 (40.4% below fair value)
Industry Position: 38.9% below the Industrial Products median (#280 of 3124)
No single metric tells the full story. See the AMPX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Amprius Technologies Inc is engaged in the production of silicon anodes for high-energy-density lithium-ion batteries. The company develops, manufactures and markets lithium-ion batteries for mobility applications, including the aviation, electric vehicle (EV) and light electric vehicle (LEV) industries. The company's batteries are used for existing and emerging aviation applications, including unmanned aerial systems, such as drones and high-altitude pseudo satellites. Its silicon anodes are a direct drop-in replacement of the graphite anode in traditional lithium-ion batteries, and its manufacturing processes leverage the manufacturing processes for conventional lithium-ion batteries and the related supply chain.
79GF Score
Get the complete analysis for AMPX
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
AMPX has been successfully added to your 
