
The formula for the volatility of a particular stock can be derived by using the following steps:
- Firstly, gather daily stock price and then determine the mean of the stock price. ...
- Next, compute the difference between each day’s stock price and the mean price, i.e., Pi – P.
- Next, compute the square of all the deviations, i.e. (Pav – Pi)2.
- Next, find the summation of all the squared deviations, i.e. ∑ (Pav – Pi)2.
- Next, divide the summation of all the squared deviations by the number of daily stock prices, say n. It is called the variance of the stock price. ...
- Next, compute the daily volatility or standard deviation by calculating the square root of the variance of the stock. Daily volatility = √ (∑ (Pav – Pi)2 / n)
- Next, the annualized volatility formula is calculated by multiplying the daily volatility by the square root of 252. Here, 252 is the number of trading days in a year. ...
- Find the mean of the data set. ...
- Calculate the difference between each data value and the mean. ...
- Square the deviations. ...
- Add the squared deviations together. ...
- Divide the sum of the squared deviations (82.5) by the number of data values.
What is the best measure of stock price volatility?
What Is the Best Measure of Stock Price Volatility?
- Standard Deviation. The primary measure of volatility used by traders and analysts is the standard deviation. ...
- Maximum Drawdown. Another way of dealing with volatility is to find the maximum drawdown. ...
- Beta. Beta measures a security’s volatility relative to that of the broader market. ...
What measures stock volatility?
This module of TheStreet University will cover the four main types of volatility measures:
- historical volatility;
- implied volatility;
- the volatility index; and
- intraday volatility.
What are the highest volatility stocks?
Those criteria will generate a list of stocks that:
- Typically move more than 5% per day, based on a 50-day average—you can use any timeframe you want, but a 50-day average or more will help you find stocks that ...
- Are priced between $10 and $100—you can alter those amounts to suit your preferences
- Had average daily trading volume of more than 4 million during the past 30 days
What is the formula for price volatility?
The Kroger Co. (NYSE:KR) has a beta value of 0.43 and has seen 8.86 million shares traded in the last trading session. The company, currently valued at $34.74B, closed the last trade at $47.71 per share which meant it lost -$1.39 on the day or -2.83% during that session.

How do you calculate volatility of a stock in Excel?
To calculate the volatility of a given security in a Microsoft Excel spreadsheet, first determine the time frame for which the metric will be computed.Step 1: Timeframe. ... Step 2: Enter Price Information. ... Step 3: Compute Returns. ... Step 4: Calculate Standard Deviations. ... Step 5: Annualize the Period Volatility.
What is volatility and how is it calculated?
Volatility is the up-and-down change in the price or value of an individual stock or the overall market during a given period of time. Volatility can be measured by comparing current or expected returns against the stock or market's mean (average), and typically represents a large positive or negative change.
How do you calculate volatility of a stock or beta?
Write down the formula for beta coefficient: beta = (Kc - Rf)/(Km - Rf) where Kc is the difference in the stock's high and low price, Rf is the rate of risk-free investments, Km is the benchmark index rate of return and beta is the measure of volatility.
What is the volatility of a stock?
Volatility is the standard deviation of a stock's annualised returns over a given period and shows the range in which its price may increase or decrease. If the price of a stock fluctuates rapidly in a short period, hitting new highs and lows, it is said to have high volatility.
What is a good volatility percentage?
The higher the standard deviation, the higher the variability in market returns. The graph below shows historical standard deviation of annualized monthly returns of large US company stocks, as measured by the S&P 500. Volatility averages around 15%, is often within a range of 10-20%, and rises and falls over time.
Is a high volatility good?
The speed or degree of the price change (in either direction) is called volatility. As volatility increases, the potential to make more money quickly, also increases. The tradeoff is that higher volatility also means higher risk.
Is volatility same as beta?
Beta is a measure of a stock's volatility in relation to the overall market. By definition, the market, such as the S&P 500 Index, has a beta of 1.0, and individual stocks are ranked according to how much they deviate from the market. A stock that swings more than the market over time has a beta above 1.0.
What is volatility 75 index?
The Volatility 75 Index better known as VIX or VOL 75 index is an index measuring the volatility of the S&P500 stock index. VIX is a measure of fear in the markets and if the VIX reading is above 30, the market is in fear mode. Basically, the higher the value – the higher the fear.
Is volatility same as standard deviation?
Standard deviation, also referred to as volatility, measures the variation from average performance. If all else is equal, including returns, rational investors would select investments with lower volatility.
What is considered a high volatility?
When a stock that normally trades in a 1% range of its price on a daily basis suddenly trades 2-3% of its price, it's considered to be experiencing “high volatility.”
What is 30 day price volatility?
Volatility is used as a measure of a security's riskiness. Typically investors view a high volatility as high risk. Formula. 30 Day Rolling Volatility = Standard Deviation of the last 30 percentage changes in Total Return Price * Square-root of 252.
How to calculate volatility of a security?
The simplest approach to determine the volatility of a security is to calculate the standard deviation#N#Standard Deviation From a statistics standpoint, the standard deviation of a data set is a measure of the magnitude of deviations between values of the observations contained#N#of its prices over a period of time. This can be done by using the following steps: 1 Gather the security’s past prices. 2 Calculate the average price (mean) of the security’s past prices. 3 Determine the difference between each price in the set and the average price. 4 Square the differences from the previous step. 5 Sum the squared differences. 6 Divide the squared differences by the total number of prices in the set (find variance ). 7 Calculate the square root of the number obtained in the previous step.
What are the different types of volatility?
Types of Volatility. 1. Historical Volatility. This measures the fluctuations in the security’s prices in the past. It is used to predict the future movements of prices based on previous trends. However, it does not provide insights regarding the future trend or direction of the security’s price. 2.
What is the difference between beta and standard deviation?
A company with a higher beta has greater risk and also greater expected returns. . Standard deviation measures the amount of dispersion in a security’s prices. Beta determines a security’s volatility relative to that of the overall market. Beta can be calculated using regression analysis.
What is beta in stock?
Beta The beta (β) of an investment security (i.e. a stock) is a measurement of its volatility of returns relative to the entire market. It is used as a measure of risk and is an integral part of the Capital Asset Pricing Model (CAPM). A company with a higher beta has greater risk and also greater expected returns.
What is the VIX index?
VIX The Chicago Board Options Exchange (CBOE) created the VIX (CBOE Volatility Index) to measure the 30-day expected volatility of the US stock market, sometimes called the "fear index". The VIX is based on the prices of options on the S&P 500 Index.
What are the two types of options?
There are two types of options: calls and puts. US options can be exercised at any time. equal to the option’s current market price. Implied volatility is a key parameter in option pricing. It provides a forward-looking aspect on possible future price fluctuations.
What is an option call?
Options: Calls and Puts An option is a form of derivative contract which gives the holder the right, but not the obligation, to buy or sell an asset by a certain date (expiration date) at a specified price (strike price). There are two types of options: calls and puts. US options can be exercised at any time.

Types of Volatility
Calculating Volatility
- The simplest approach to determine the volatility of a security is to calculate the standard deviationof its prices over a period of time. This can be done by using the following steps: 1. Gather the security’s past prices. 2. Calculate the average price (mean) of the security’s past prices. 3. Determine the difference between each price in the set...
Sample Calculation
- You want to find out the volatility of the stock of ABC Corp. for the past four days. The stock prices are given below: 1. Day 1 – $10 2. Day 2 – $12 3. Day 3 – $9 4. Day 4 – $14 To calculate the volatility of the prices, we need to: 1. Find the average price:$10 + $12 + $9 + $14 / 4 = $11.25 2. Calculate the difference between each price and the average price: Day 1: 10 – 11.25 = -1.25 …
Additional Resources
- Thank you for reading CFI’s guide on Volatility. To continue learning and advancing your career, these additional resources will be helpful: 1. Guide to Beta in Finance 2. Market Risk Premium 3. Value at Risk (VAR) 4. VIX