One of the most popular tools in technical analysis that is used to predict a shift in a stock's momentum is known as the relative strength index (RSI). This indicator's primary purpose is to determine when a given rally is becoming overbought or oversold. Generally speaking, readings below 30 suggest that the stock has been pushed to an unjustifiably low level, causing most bullish traders to start looking for a strategic entry position. On the other hand, readings above 70 are often used to suggest that the rally is getting exhausted and that the bears may be getting ready to send the stock lower.

Calculation



The Basics
The indicator is plotted between a range of zero to 100 where 100 is the highest overbought condition and zero is the highest oversold condition. The RSI helps to measure the strength of a security's recent up moves compared to the strength of its recent down moves. This helps to indicate whether a security has seen more buying or selling pressure over the trading period.

The standard calculation uses 14 trading periods as the basis for the calculation which can be adjusted to meet the needs of the user. If the trading periods used is lowered then the RSI will be more volatile and is used for shorter term trades. (For more, see Ride The RSI Rollercoaster)

How It Is Used
As mentioned above, the most common method of applying the RSI is to use overbought and sold lines to generate buy-and-sell signals. In the RSI, the overbought line is typically set at 70 and when the RSI is above this level the security is considered to be overbought. The security is seen as oversold when the RSI is below 30. These values can be adjusted to either increase or decrease the amount of signals that are formed by the RSI. Let's take a look at a few stocks that have recently entered oversold territory because these could be candidates for a short-term rally when they get spotted by bargain hunters.




Company Name
RSI Value

Netflix Inc. (Nasdaq:NFLX)
28.18

Green Mountain Coffee Inc. (Nasdaq:GMCR)
23.21

Agnico Eagle Mines Ltd. (NYSE:AEM)
22.29

Crocs Inc. (Nasdaq:CROX)
25.30

Illumina Inc. (Nasdaq:ILMN)
20.75

Bottom Line

The RSI is a standard component on any basic technical chart and is a great method of filtering stocks that could be setting up for a short-term rally. In most cases, traders will want to confirm any buy or sell signal by using other technical indicators or chart patterns to increase the probability that a predicted move will actually occur. (For more, see Relative Strength Index Helps Make The Right Decisions)

Related Articles
  1. Personal Finance

    A Day in the Life of an Equity Research Analyst

    What does an equity research analyst do on an everyday basis?
  2. Mutual Funds & ETFs

    ETF Analysis: PowerShares S&P 500 Downside Hedged

    Find out about the PowerShares S&P 500 Downside Hedged ETF, and learn detailed information about characteristics, suitability and recommendations of it.
  3. Mutual Funds & ETFs

    ETF Analysis: ProShares Large Cap Core Plus

    Learn information about the ProShares Large Cap Core Plus ETF, and explore detailed analysis of its characteristics, suitability and recommendations.
  4. Mutual Funds & ETFs

    ETF Analysis: iShares Core Growth Allocation

    Find out about the iShares Core Growth Allocation Fund, and learn detailed information about its characteristics, suitability and recommendations.
  5. Mutual Funds & ETFs

    ETF Analysis: iShares MSCI USA Minimum Volatility

    Learn about the iShares MSCI USA Minimum Volatility exchange-traded fund, which invests in low-volatility equities traded on the U.S. stock market.
  6. Stock Analysis

    Should You Follow Millionaires into This Sector?

    Millionaire investors—and those who follow them—should take another look at the current economic situation before making any more investment decisions.
  7. Professionals

    What to do During a Market Correction

    The market has corrected...now what? Here's what you should consider rather than panicking.
  8. Mutual Funds & ETFs

    ETF Analysis: Vanguard Mid-Cap Value

    Take an in-depth look at the Vanguard Mid-Cap Value ETF, one of the largest and most popular mid-cap funds in the U.S. equity space.
  9. Mutual Funds & ETFs

    ETF Analysis: Schwab US Broad Market

    Take an in-depth look at the Schwab U.S. Broad Market ETF, an incredibly low-cost fund based on a wide selection of the U.S. equity market.
  10. Professionals

    Tips for Helping Clients Though Market Corrections

    When the stock market sees a steep drop, clients are bound to get anxious. Here are some tips for talking them off the ledge.
RELATED TERMS
  1. Equity

    The value of an asset less the value of all liabilities on that ...
  2. Hard-To-Sell Asset

    An asset that is extremely difficult to dispose of either due ...
  3. Sucker Yield

    When an investor has essentially risked all of his capital for ...
  4. PT (Perseroan Terbatas)

    An acronym for Perseroan Terbatas, which is Limited Liability ...
  5. Ltd. (Limited)

    An abbreviation of "limited," Ltd. is a suffix that ...
  6. BHD (Berhad)

    The suffix Bhd. is an abbreviation of a Malay word "berhad," ...
RELATED FAQS
  1. What is the difference between called-up share capital and paid-up share capital?

    The difference between called-up share capital and paid-up share capital is investors have already paid in full for paid-up ... Read Full Answer >>
  2. Why would a corporation issue convertible bonds?

    A convertible bond represents a hybrid security that has bond and equity features; this type of bond allows the conversion ... Read Full Answer >>
  3. How does additional paid in capital affect retained earnings?

    Both additional paid-in capital and retained earnings are entries under the shareholders' equity section of a company's balance ... Read Full Answer >>
  4. What types of capital are not considered share capital?

    The money a business uses to fund operations or growth is called capital, and there are a number of capital sources available. ... Read Full Answer >>
  5. What is the difference between issued share capital and subscribed share capital?

    The difference between subscribed share capital and issued share capital is the former relates to the amount of stock for ... Read Full Answer >>
  6. What happens to the shares of stock purchased in a tender offer?

    The shares of stock purchased in a tender offer become the property of the purchaser. From that point forward, the purchaser, ... Read Full Answer >>

You May Also Like

COMPANIES IN THIS ARTICLE
Trading Center
×

You are using adblocking software

Want access to all of Investopedia? Add us to your “whitelist”
so you'll never miss a feature!