# All Questions

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### Correlation between asset A and Portfolio X (which contains A)

After a few hours trying to solve this I give up! I need help. I need to calculate the BETA of an asset with respect to a portfolio that contains this asset. I have the volatility and correlations ...
879 views

### Strategy Risk and Portfolio Allocation Model (copy from nuclear phynance)

Here is a very interesting question that I found at Nuclear Phynance (original author: Strange); I though it is so interesting that it is worthwhile to ask it here: I have $N$ strategies, across a ...
70 views

### Realized “efficient” frontier. Is this reasonable?

I have performed some out-of-sample analysis of mean-variance optimization with monthly rebalancing. Studying the "realized efficient frontier", I am worried that something is wrong. Since the ...
87 views

### Second Moment of Stock Process

I have a stock process which I have decided to model as $$S_T=S_t\exp((r-q-\frac{1}{2}\sigma^2)(T-t)+\sigma(W_T-Wt))-D_T$$ where $D_T$ is a cash dividend at time $T$. This dividend is known. I then ...
31 views

### wishart stochastic volatility models

Stochastic volatility models assume that volatility follow a random process.In the emerging market the volatility tend to be high. why is it that the wishart stochastic volatility model fit well the ...
11 views

### Selection of optimal backtesting parameters

Suppose I backtest some strategy on in-sample data while varying two parameters, say $X$ and $Y$. $X$ can take the values $\{3,6,9,12,15,18\}$ while $Y$ can take $\{10,15,20,25,30\}$. I want to select ...
849 views

### ex ante tracking error correlation between funds

I have two portfolio's called Comb & Global. They both have the same investable universe lets says 3000 stocks & are measured against the same benchmark. So it is possible that both funds hold ...
142 views

### Is there an API to perform request about stocks and financial derivatives? [closed]

Is there an API to make a request such as: all the companies which thier P/E ratio is greater than 50 ? I know I can crawl google finance and have it locally on my ...
41 views

### long fra and a short ed future with same fixing dates, is convexivity negative or positive?

If you are long a FRA (forward rate agreement) and short a ED　（Eurodollars) future with the same fixing dates, do you have positive convexity or negative convexity? Why? According to the following ...
46 views

### Can a momentum strategy be cast as a multilinear regression model?

Disclaimer: the question is similar to Can momentum strategies be quantitative in nature? and (to an extent) What is the expected return I should use for the momentum strategy in MV optimization ...
576 views

### Models crumbling down due to negative (nominal) interest rates

Given that the negative interest rates on a lot of sovereign bonds with maturity under 10 years are trading in the negative (nominal) interest rate territory (recently also the short term EURIBOR has ...
174 views

### Stochastic Calculus Rescale Exercise

I have the following system of SDE's $dA_t = \kappa_A(\bar{A}-A_t)dt + \sigma_A \sqrt{B_t}dW^A_t \\ dB_t = \kappa_B(\bar{B} - B_t)dt + \sigma_B \sqrt{B_t}dW^B_t$ If $\sigma_B > \sigma_A$ I ...
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### How to work out the forward outright price from the bid/ask quotes?

I'm facing this problem: Spot AUD/USD is quoted at 0.7634/39; six-months swaps are 112.1/111.1; at what forward outright rate can a price taker sell USD value spot/6 months? On the spot ...
47 views

### Could someone teach me how to construct the portfolios by compute (like using R, Excel or Eviews)

Recently, I am doing my dissertation that covers asset pricing theory. The empirical test of Fama 3 factors model is an important part of this dissertation. Please let me review the fama model. Fama ...
831 views

### How to calculate the JdK RS-Ratio

Anyone have a clue how to calculate the JdK RS-Ratio? Let's say I want to compare the Relative strength for these: EWA iShares MSCI Australia Index Fund EWC iShares MSCI Canada Index Fund EWD ...
20 views

### Which is better for quantitative finance, a computer science PhD or an applied mathematics PhD? [on hold]

In the world of quantitative finance which of the following would be more highly regarded or useful when it comes to applying for jobs: A computer science PhD focused on machine learning used to ...
97 views

### Monetary Policy and the Yield Curve PART TWO

The Fed has a number of tools/targets with which they manage monetary policy. I'm looking to refine a concise summary of them and looking for guidance/correction/validation. Think I understand these ...
36 views

### Special term for 'intersection' of option price

Suppose, I have written two ordered lists: $S_{call}= (\textbf{8000, 8050, 8100}, 8150, 8200, 8250)$ and $S_{put} = (7850, 7900, 7950, \textbf{8000, 8050, 8100})$. Entities are correspond to strike ...
26 views

### Bond Duration with Bond portfolio returns

if I have given CRSP bond portfolio returns with different maturities (1m-12m, etc), how is it possible to compute the Future price and the duration? Beside that I do also have the ...
36 views

### Using R with princomp to create hedge baskets

I am experimenting to try to find better ways to hedge some of our equity portfolios. It's easy enough to use R to get a PCA breakdown of exposure for a portfolio but I can't figure out how to then ...
136 views

### Merton model riskless self-financing derivation

Suppose $dA_t = A_t[\mu dt+\sigma dW_t]$ (assets' value) under the physical measure, plus the other assumptions of the Merton model. Suppose further that debt and equity are tradeable assets that ...
16 views

### How can you find change in working capital and capital expenditures without a balance sheet?

I'm working with the following information trying to work through a valuation exercise and I'm absolutely stuck. How can I find ∆WC and CAPX with this information?
31 views

### Who pays for sovereign ratings?

Does the "issuer-pay" model hold also for sovereign credit ratings? Do States pay for having their bond being rated?
290 views

### Where can I get equivalent of 3 months libor or swap historical data?

Please note: I have already checked your standard "Historical data sources" link, but it does not have the data I need: I am looking for 5 years of libor/swap data for major currencies. Daily, or ...
21 views

### Time series of European sovereign credit ratings by the Big Three?

I would need time series, from 2000 to 2015 (if possible) of sovereign credit ratings by Moody's, S&P and Fitch. Could you suggest me a source or provide me such a dataset? Thank you very much!
7k views

### How to simulate correlated Geometric brownian motion for n assets?

So I'm trying to simulate currency movements for several currencies with a given correlation matrix. I have the initial price, drift and volatility for each of the separate currencies, and I want to ...
26 views

### How to take care of newly auctioned yield/price in fixed income data

This is a financial data cleaning question. I have raw price and yield data for US cash treasury across the curve. In the time-series there are jumps on the day after the treasury auction results come ...
51 views

### What is the effect of mean-reversion on an upper barrier knock-out call option?

Consider a mean-reverting normal model for an underlying $dX^{(1)}_t=-\kappa X^{(1)}_tdt+\sigma^{(1)} dW^{(1)}_t$, for fixed time-independent constants, $\kappa$ (mean-reversion) and $\sigma^{(1)}$ ...
191 views

### Correct Alphabet (Google) market cap calculation?

Given the definition: ...
23 views

### What approaches are there for keeping local and remote order books in sync?

Scenario: developing a custom application which defines a structured workflow for manual order submission to Bloomberg EMSX; it should minimize own persisted state and rely on the remote order book as ...
48 views

### Preparation for interview: influx of power of the moon

I am preparing myself for an interview for a quantitative analyst position and one of the sample questions asked in previous examinations was: "Suppose the moon were to disintegrate, and fall to ...
56 views

### Stress Testing for VaR

I am trying to perform stress testing for VaR and have taken into consideration two methods:- 1. Sensitivity analysis 2. Historical scenario analysis. According to the Derivatives Policy group we ...
168 views

### Do we need Feller condition if volatility process jumps?

It is fairly known that in affine processes, as Heston model \begin{aligned} dS_t &= \mu S_t dt + \sqrt{v_t} S_t dW^{S}_{t} \\ dv_t &= k(\theta - v_t) dt + \xi \sqrt{v_t} ...
115 views

### What is the heat-map method of calculating VaR?

I'm familiar with the historical full revaluation, VcV, and Delta-gamma methods, but a client keeps talking about a heat-map method and I'm not sure what he's talking about. Any ideas?
134 views

### Step By Step method to calculating VaR using MonteCarlo Simulations

In trying to find VaR for 5 financial assets with prices over a long period of time(2000 days worth of data) how would I do the following: Carry out monte-carlo simulation in order to find a VaR ...
66 views

### Is there a way to meaningfully generate daily returns from monthly?

I have a set of 7 investments in a portfolio and I need to optimize the weightings based on some exposures to various markets/styles/economic factors. I was hoping to do some sort of simple exposure ...
214 views

### Can I use PyAlgoTrade for Forex?

Is it possible to use PyAlgoTrade for Forex related algorithms? If it is, please point me in the right direction on how to get PyAlgoTrade to work on Forex data.
42 views

### Deduce expected exposure profile from option/structure delta?

I am thinking about whether there exists a relationship between the delta of an option (or any structured derivative) and it's expected positive/negative exposure? An intuitive question would be ...
27 views

### Error using ghyp-distribution function

I want to fit multivariate GH distribution on my data, and then generate simulations for that distribution. Using the instructions given in ghyp package, I wrote following lines of code in R. ...
47 views

### Conditional probability of geometric brownian motion

I created paths using GBM to implement The stochastic mesh method. But the method requires the conditional distribution, given some S(t) the probability of S(t+1). I've searched and can't find this ...
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### Is This A Viable Alternative Options Pricing Method?

i'm currently a high school student who hasn't gone past Algebra II, and thus I have minimal Calculus knowledge. I know the basics of Integration and Derivation (drop the coefficient, raise to the ...
141 views

### How to perform risk budgeting for non-linear portfolios?

I am using this question to compute optimal weights following a risk budgeting approach. The problem is I am using non-linear portfolios (options,equity,fixed income,fx). What I am looking for is ...
76 views

### Modeling the Stock Market

Hi I was wondering what is the model that best describes the price movement of the stock market? A Brownian motion Process with drift? An Ornstein Uhlenbeck_process? (where the long term mean ...