A measure of the variation in price over time. Also a measure of the risk of a financial instrument.

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86 views

Where can I find a list of market-moving news announcements for different asset classes?

Different asset classes have different important news announcements that move the markets intraday. For instance, oil volatility increases after the EIA Petroleum Status Report, but that announcement ...
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3answers
110 views

What makes investors risk averse?

There are some regularly-occuring events that coincide with a rise in the implied volatility of an asset. For example, in advance of an firm's annual earnings report, it is typically expensive to buy ...
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107 views

Constructing Volatility Smile from Implied Volatility & Delta

I have implied volatility data for call and put options (expiring in 1 month from any given date) for a particular stock. In addition, I have the delta for the options. However, I have no information ...
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121 views

Where can I find historical data for volatility estimation?

I'm trying to estimate volatility following Shreve book, so I need observations of $f(t_j,t_j+\tau_k)$ and $f(t_j+\delta,t_j+\tau_k)$, where $t_J<t_{J-1}<\dots<0$ and $\tau_k$ are relative ...
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159 views

Close price or adjclose price to calculate volatility?

To calculate volatility, which price in FTSE table is used? When do we use close price for calculating volatility? Do we use adjclose (adjusted close price) for calculating volatility as well? when ...
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125 views

What is the realized volatility's estimation error?

Given an estimation procedure and real data, how would one compute the mean squared error? What value represents the "true" realized volatility in the case of calculating the Mean Squared Error in ...
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300 views

How to compute a sector's volatility within a portfolio?

Assume I have a large portfolio of equities spread across three sectors. I am attempting to compute the volatility of these sectors within the portfolio considering the cross correlations among the ...
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124 views

Volatility Index Weighting Scheme

Among the several weighting schemes used for constructing volatility indices, which ones are the best for forecasting (realized) volatility? I've constructed a volatility index for emerging markets ...
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5 views

Solving a Non-Linear PDE using a Finite Difference Scheme

I have the following non-linear PDE and I have no idea how to go about solving it using a finite difference scheme in Python. Can someone get me started and/or point me to an algorithm for doing this? ...
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30 views

variance ratio for pair-trading

I am using the variance ratio test to check whether my sequence is mean reverting in that test there is a parameter n, How in general I choose this n? or what is the meaning of this parameter? ...
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66 views

Short term<10 sec volatility model

For example we have Price time series (seconds or ticks) USD/EUR S...Sn 0.937 0.936 0.934 0. 933 0.935 etc and Momentum Series of r(1..n) r=S(n)-S(n-1) ******My qustion is simple************* Which ...
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19 views

SRRI calculation for absolute return funds

I am trying to understand the formula for calculating SRRI for absolute return funds described in ESMA's guideline CESR/10-673, and Richard's answer has been of great help (What does this formula (to ...
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30 views

Correction factors for volatilities of smoothed returns

In An Introduction to High Frequency Finance (http://www.amazon.ca/Introduction-High-Frequency-Finance-Ramazan-Gen%C3%A7ay/dp/0122796713), the authors (on page 253) build a tick-frequency volatility ...
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56 views
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40 views

Comparing Portfolio Volatility with Index Volatility seems a wrong method?

thanks for looking into this question. I am comparing an investment strategy against the S&P 500 for a financial article I'm writing. I compute volatility of the Portfolio in this way, as the ...
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42 views

I have volatility of a portfolio in year 1 and in year 2. How do I calculate the volatility over the total 2-year period?

thanks for looking into this question. See the picture below (better is right-mousebutton - open in new tab). I also have the price and return data of the Stocks if that's needed to calculate the ...
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51 views

How do I track implied volatility of specific delta?

I'm a newbie with respects to volatility trading and options. I recently purchased a book on the topic called "Trading Implied Volatility -An introduction" by Simon Gleadall. It's been one of the most ...
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34 views

volatility grouping

I was working on risk levels of a combined portolfio (includes options,futures as well as stock). While using greeks we can asses some value of a portolio, but when one needs to assess some kind of ...
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63 views

Vanna-Volga method to infer vol surface with just few realtime tick data

My broker gives me the opportunity to get realtime tick data for up to 50 fields. Since I would like to monitor option chains, this amount of data is very limited. Suppose I am interested in ...
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19 views

Residual maturity vol

The following question is probably (from a practical point of view) more relevant for EM markets which typically exhibit a more pronounced forward volatility compared to spot volatility. Say I buy a ...
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27 views

How to compare the volatility of quarterly p&l of two firms in the same sector?

I want to compare the volatility of the historical quarterly profit and loss data of two or more firms operating in the same sector and determine whether the volatility of p&l of these firms is ...
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66 views

Fixed volatility portfolio with max returns creates skewed results

I am trying to create a portfolio of only four components using the mean-variance optimization (MVO). I am setting up my problem such that I want to maximize the expected returns with a fixed vol ...
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65 views

Negative Risky vs Negative Butterfly

I understand that in regard to FX options, a volatility smile with negative Risk Reversals is effectively indicating that the spot market for a given currency pair is in decline (puts over). In ...
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63 views

commodity futures pricing vs. underlying spot rates in volatile markets, at depth of book

Are futures contracts or their underlying spot rates, more or less efficient, at depth of market, with volatility? Say for example we have: 1 E7 (CME contract) = 62,500 euro Should the future or ...
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34 views

Common point between IR and Vol option pricing models?

What is the common point between pricing models on options on Interest Rates and options on Volatility?
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214 views

Controling ex-post volatility by ex-ante limits

In the context of mutual funds the KID directive forces us to calculate 5 year ex-post volatility of a (market) fund (weekly returns). Thus each week we look back in the past and calculate volatility ...
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73 views

Volatility clustering but (G)ARCH not good fit

I'm looking at a time series that appears to be white noise. The ACF/PACF are in the test bounds. Applying the Ljung-Box test for various (maximum) lags gives me high p-values (i. e. I cannot reject ...
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68 views

calculation of parameters in Stochastic Volatility

I want to compare volatility models from constant volatility, implied, time-varying (ARCH, etc) and stochastic volatility. I can find the process to calculate constant, implied and ARCH and GARCH ...
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79 views

Stochastic Volatility for Stocks, FTSE

Can someone help me with calculating Stochastic Volatility (of stocks and options) using SAS or R or Matlab please? I am new to SAS and I am trying to use Heston model, White-Hull model or any other ...
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131 views

How to calculate modeled asset volatility by industry factor?

Currently I am working with huge data frame which consists of a lot firms. For each firm in my sample I calculated asset volatility ( I am using Merton default probability model, so I have used 2 ...
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27 views

explanation for preference of volatilities in option premium quotes [duplicate]

could any one suggest an explanation for why premium in option markets (currency or otherwise) are quoted as volatilities rather than (premium/abs(spot price - settlement price)) or some other ...
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50 views

Is the price of a binary call not monotonous with vol for OTM

Is this true and how would you prove it