# All Questions

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### Rest API to retrieve ISIN

What is best API to lookup ISINs by number or name? In other words, ideally I would like to have an rest-api like this: ...
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### Explain Present Value and Future Value for cash flow streams [on hold]

Please help me understand the concept of Future Value and Present Value for stream of cash flow in an intuitive way. I have tried a lot of resources on the internet, but I find their explanation a bit ...
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### Given Brownian motion $B_t,B_s$ and $t>s$, how to calculate$P(B_t>0,B_s<0)$?

As stated, this is an interview questons Given Brownian motion $B_t,B_s$ and $t>s$, how to calculate$P(B_t>0,B_s<0)$?
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### Mutual Fund Holdings

Several free and non-free data providers provide mutual fund holdings (e.g. Google and Yahoo give the top holdings). The primary sources, I think, are the filings submitted to SEC's EDGAR. Both the ...
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### Mix of Arithmetic and Geometric Brownian Motion

Talking with some traders the other day, I found out that they were using a pricing model based on a mix between a geometric brownian motion and an arithmetic brownian motion to price certain ...
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### Theoretical price of bond : utility

Why should one calculate the theoretical price of bond if there is already a market quote ?
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### Swaptions to calculate swap exposure for CVA

I am looking at using the swaption method to calculate the EPE and ENE on a swap over its life, to use in CVA/DVA calculations. I have a number of questions, how well does this method work in ...
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### Why does a barbell portfolio have higher convexity than a bullet porfolio

I cannot quite understood absolutely why a barbell portfolio has higher convexity than a bullet porfolio. I can easily understand how the parallel line represents duration but I cannot see what ...
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### Calibration: comparing models

Exponential Lévy models fall in two main categories: jump diffusion models and infinite activity Lévy models. For my paper, I study jump diffusion models and in particular Merton's model (i.e normall ...
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### how to convert quarterly data to monthly

Is there any way to convert quarterly data to monthly in excel or preferably in STATA? I Next to that, how can I transform dates in excel so as to be recognized by STATA?
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### Forex Market Timezones

I need to store OHLC data from the Forex Market. I live in the UK which is presently in British Summer Time +1. The Forex Market EST, which is normally -5 from GMT. I'm not sure how Eastern ...
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### Move along, nothing to see here…just a super cheap stock price for an instant?

Can someone explain what this large negative spike in this stock chart is in after-hours trading? It almost looks like a data glitch to me, since the value before and after the spike are almost ...
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### VAR FPCA analysis paper replication

I've been trying to replicate the following publication: toronto.edu/sjaimung/papers/VAR-FPCA.pdf but i havent been able to get the same results estimating the $\beta_{k}$ parameters. First, I got ...
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### How to know if a company actually deposit money into your credit card [on hold]

I took a cruise trip. They are supposed to give some cash back. I called them, they said the money was deposited into my credit card. I didn't see it in my credit card bill. So what can I do if they ...
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### Fama-Macbeth regression in Eviews

I'm adding a new factor to Fama-French three-factor model. I have constructed portfolios and got 18 three-way sorted portfolios. Now, I think I have to do Macbeth procedure to test the model. I'm ...
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### Variance Ratio on Currency Pair, Validation

Can somebody tell me if my variance ratio (unit root test) test is correct? I don't want to rely on my results until I can find somebody that also has a variance ratio algo that confirms them? Here is ...
62 views

### Predict the financial markets in the fashion of a video game?

DeepMind have demonstrated amazing capabilities of a reinforcement machine learning agent to competently play Atari video games. It is most astounding that that during training nothing more than the ...
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### Swaption Corridor Payoff Diagram

What does the payoff diagram look like for a long payer swaption corridor? For example, suppose that I am looking at a long-payer $1 \times 10$-year swaption with 10Y swaps as the underlying. If I ...
61 views

### Log-normal Volatility Approximation

In a comment to this question, it is mentioned that, under the log-normal distribution, \begin{align*} vol(k) \approx vol(atm) \times \sqrt{\frac{atm}{k}}. \end{align*} Here, $k$ is the strike, $atm$ ...
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### Is there a relation between total futures and the amount of production?

I have a multipart question about futures and production. Lets take corn as an example. We add up the total 1 year futures of corn, call this weight $A$ kg. Next, we can get a reasonable estimate of ...
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### FTAP wih Heston Model

The Fundamental Theorem of Asset Pricing (FTAP) is invoked when we say the time $0$ price of a European option with payoff $g$ is $e^{-rT}E_Q(g(S_T))$, with the hypothesis that $e^{-rt}S_t$ is a $Q$-...
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### Binary Options hedge Forex position

if I am short GBPJPY and it start to jump up, instead of closing it, could I use Binary Options to long it immediately after jump up? So I could hedge current Forex position if possible.
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### EM for conditional Gaussian model

Let $$X_1\sim N(\mu_{X_1},\sigma_{X_2}^2)$$ $$X_2\sim N(\mu_{X_2}, \sigma_{X_2}^2)$$ where $\mu_{X_2}=c+aX_1$. Also, I have data $D$ (with missing values on $X_1,X_2$). How can I update/estimate the ...
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### Downward sloping smile in normal model

We consider an stock price $S$ following a normal model: $dS_t = \sigma dW_t$ We can write this as $\frac{dS_t}{S_t}=\frac{\sigma}{S_t}dW_t$ Hence we can see that $S$ follows a "log-normal" ...
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### Does the solution to this problem on floorlets have an error?

I'm self-studying and encountered the below problem and solution. I believe the payoff of the put at node $dd$ would be $(1.044)^{-1}\max(0.05 - 0.02, 0) = 0.019157088,$ and similarly the payoff at ...
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### Which version of NAICS code is used in CRSP and Compustat?

Is the NAICS code used in CRSP and Compustat always the latest one? If yes, then it means, by this year, they should be using NAICS code 2012 revision. I have some external data which is only using ...
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### Large trend-followers: why use futures rather than ETFs?

There are a number of large trend-following CTAs that have been successfully running for 10+ years. Their main instrument is diversified futures. Why not ETFs (is it due to liquidity / scaling, costs, ...
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### Where to find sample intraday data? One to two days or more

I'm looking for some intraday stock data. Doesn't really matter what kind of security... I'm just looking for price, volume, bid, and ask. I'm looking to test a model based on the dynamics and ...
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### How to choose the correct ticker for rates?

I would like to calculate funding liquidity following Asness/Moskowitz/Pedersen (2013). Among others, they calculate the LIBOR minus term repo rate, and the Swap-T-bill, LIBOR minus interest rate ...
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### Can the concept of negative probabilities be used to price a call option?

Assume that we have a general one-period market model consisting of d+1 assets and N states. Using a replicating portfolio $\phi$, determine $\Pi(0;X)$, the price of a European call option, with ...
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### How exactly are correlated defaults used/analyzed?

I've read a lot about correlate defaults but I can't seem to understand how they're used practically in a portfolio theory setting. Suppose I have two (?) companies, X and Y, and historic default ...