# All Questions

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### Calculate minimum IV increase to offset theta

How would one calculate the minimum implied volatility increase necessary to offset theta decay? IV is typically a percentage, while theta is a dollar value. In theory I think I could look at what ...
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### EDGX, EDGA, Nasdaq and Bats-Z Pricing in 2011

I'm trying to find the fee and rebate structure of these 4 exchanges during year 2011, in the specific, I'm interested in the cost of posting a hidden Limit Order, in the cost of removing a visible ...
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### Where can i get a feed for country specific economic announcements?

I am looking for a feed for country wide economic announcements. For example CPI announcements etc. I currently use http://www.fxstreet.com/economic-calendar/ but I have to manually go there and ...
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### Risk Neutral Measure [duplicate]

I have been looking for a good intuitive reasoning for introduction of the risk neutral measure and its uses in quantitative finance, but I have yet to find one. I was wondering if any one could ...
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### How do I find the entity identifier using BSYM?

I am new to BSYM and would like to do an entity-level search (as described here (towards bottom of document). For instance, a search for "APPLE INC" brings up 266 pages. Which one is for the entity? ...
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### matlab interpretation of johansen cointegration test

I need some help understanding the results of Johansen Cointegration test run on MATLAB. I am quite new to econometrics and do not fully comprehend what MATLAB has come up with. I would be really in ...
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### what data to use to compare the interest rate among different currencies?

Very new to fixed income signals. I am a little confused about which data to use to compare interest rate among different currencies. For example, I am interested in compare interest rate in the ...
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### Interpreting Johansen co integration test

I am a little new to econometrics. Please pardon me for this silly question. I was running a Johansen cointegration test on two time series using the econometrics toolbox provided by James LeSage for ...
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### How do I calculate the PPP adjusted exchange rate between two countries?

I have been trying to calculate the PPP-adjusted EURUSD exchange rate. I am not sure if it is the same as relative PPP, for which I have used this formula: Spot rate at time t = Current spot rate * ...
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### Seeking Advice for Exam FM regarding Derivatives Markets

I am taking Exam FM in a week and I was wondering if I could get any advice from people who have recently passed this exam. How much of the derivatives markets question did show up? I am using the ...
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### Proof of Hamada's Formula (Relationship between levered and unlevered beta)

Hamada's formula is presented as follows: $$\beta_{U}=\left[\frac{1}{1+\frac{D}{E}(1-\tau)}\right]\beta_{L},$$ where $\beta_{U}$ and $\beta_{L}$ are the unlevered and levered beta's of a firm ...
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### The danger of using Principal Component Analysis (PCA) in Robust Optimization problems

I have received a reviewer's comment on a paper which applies PCA to reduce the size of a problem and the application is in the robust optimization field. The reviewer implies that "In robust ...
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### Works of Nassim Taleb

I am looking to find the list of math/statistics papers of Nassim Taleb. However the google scholar page only seems to show popular articles. I know that he's famous for his theory of randomness and ...
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### Pricing a call when minimum stock price above strike with certainty

I am editing this question because it was originally unclear, and I didn't get the answers I was hoping for. In my finance book I have the following question T-bills currently yield 5.5 percent. ...
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### Covariance structure of call option surface

Assume the observed call option prices $C(K_i,T_i)$ for $i = 1,\dots,N$ are disturbed by some unknown measurement noise $\epsilon$. What would an appropriate covariance structure be for $\epsilon$? ...
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### How to use the asset covariance matrix for risk analysis in excess returns equation

New here and I have a question that may be very basic but despite my research I cannot connect the dots. I would like to know how to connect the nxn asset covariance matrix for an efficient tangency ...
If the arithmetic mean is: $\frac { \Sigma (x_i) }{n}$ and the geometric mean is $(\prod (1+x_i) ) ^{1/n}$ The arithmetic variance is $\frac { \Sigma(x_i-\mu)^2 } {n}$ then what is the ...