# All Questions

10k views

### Why does the adjusted closing price take into account dividends?

I'm trying to get an intuition as to why the adjusted closing price includes a dividend adjustment: $$1 - \frac{dividend}{close}$$ I understand why the adjusted closing ...
453 views

### How would you hedge this structure?

I have a contingent claim and I want to find out what is the best structure to meet the continent claim, how to price it and how to hedge it. I am looking more for a qualitative answer. Suppose I ...
7k views

### Discrete returns versus log returns of assets

There have been similar posts here already but nevertheless I find the question worth posting: why do some people claim that log returns of assets are more suitable for statistics than discrete ...
765 views

### Using QuickFIX in a C project

QuickFIX is a well-known open-source implementation of the FIX protocol. This library has been ported to numerous languages, though for the moment I am concentrating the on C/C++ implementation. ...
77 views

### Accounting for Withdrawals

I am trying to wrap my head around the proper way to do this. I would like to simulate the portfolio value adjusted for inflation with a fixed withdrawal rate. To simulate withdrawal rate, I will ...
1k views

### Code for Evidence Based Technical Analysis

I recently purchased http://www.amazon.com/Evidence-Based-Technical-Analysis-Scientific-Statistical/dp/0470008741 Is there an open source repository that contains (or contains as close as possible): ...
2k views

### What does this formula (to derive annualized volatility from VaR) mean?

I'm faced with the formula shown in the image below, which I just don't understand, in part because I've no grounding in stats, and in part because I don't even understand the notation: What's ...
432 views

### How do you handle Calendars in a .NET quant system?

I have developed an analytic platform in .NET, but I now have to tackle the problem of data cleaning which first starts by finding holes in time series, before actually looking to find inconsistent ...
218 views

### Modeling asset performance to Bitcoin revenue

I'm attempting to model asset performance to Bitcoin revenue, which is a driving force in the Bitcoin community. Question Is there any model, or research being done that tracks "hashes per second" ...
247 views

### Fastest algorithm for extracting 25% and 75% marks

I'm hand rolling some visualization algorithms. Extracting the min/max of a time series is $O(n)$, for n entries. If I want the 25% and 75% mark, I could use an $O(n \log n)$ time sort, then get the ...
474 views

### Unsystematic and systematic risk of a portfolio

I have 8 country stock indexes and 1 world stock index. I do not actually have time series data but I'm given the following data: $\mu$, the vector of expected future returns for all 8 country ...
2k views

### Markowitz mean-variance optimization as “error maximization”

I hear it said a lot that standard MV optimization "maximizes errors". But I can't find a good explanation for what exactly they mean by this "maximization" of estimation error. I understand that if ...
121 views

### Aftcast Generation

Aftcast is a way of simulating equity curves for different start years, usually from a large sample data ~100 years. Its kind of like start date sensitivity testing but in my case, I incorporated ...
2k views

141 views

### Brent Crude Data

I am trying to locate historical volatility data (5+ years) for Brent Crude? Does anyone know where I might be able to source such data?
1k views

### Can the Heston model be shown to reduce to the original Black Scholes model if appropriate parameters are chosen?

Summary For Heston model parameters that render the variance process constant, the solution should revert to plain Black-Scholes. Closed from solutions to the Heston model don't seem to do this, even ...
552 views

### Benfords law and quantitative finance

Benford's law has been applied in various ways for detecting fraud (e.g. elections or accounting). But what are the most useful applications of Benford in quantitative finance? Are there any? I have ...
700 views

### Backtesting VaR model violation independence

I am interested in hearing about the practitioner state of the art for testing the time independence of a VaR model (i.e. that VaR violations are independent in time). There are a number of tests in ...
592 views

### Long-term vs short-term strategies \ investing

Suppose most investors have very short investing horizons and use appropriate (for them) strategies, but investor X has a very long horizon. He would like to trade some advantages (early withdrawal ...
178 views

### Indexes/stocks with flat implied volatilities

After the 1987 crash, the S&P500 index implied volatility changed from nearly flat to negatively sloped. According to Rubinstein the Black-Scholes model was not so wrong when applied to the ...
495 views

### Why don't options traders use charts? Or do they?

Retail trading platforms typically offer equity charts but only instantaneous quotes on options. It seems like even a few minutes of historical data would be useful when entering an order. Are charts ...
83 views

### Neglect the positive values in negative interest rates modelling?

The magnitude of the negative interested rate should vary correlated with the increase in fixed assets prices and with cross-currency basis spreads. Could their volatility / correlation ...
79 views

### Separated software and physical cash flows modelling and pricing to be used with negative interest rates?

The physical cash presence in the final transactions is one of the issues in the presently observed negative interest rates bonds. Such a situation has historically been modelled within the "liquidity ...