All Questions

11
votes
6answers
9k views

How high of a Sharpe ratio is implausibly high for a low-frequency equity strategy?

I am looking to convince someone that an annualized Sharpe Ratio of 7 is 'extremely high' for a low frequency (daily rebalancing, say) long-short technical strategy on U.S. equities. I was hoping for ...
3
votes
1answer
310 views

Should I use SSAS to store Tick and bar data?

I have been looking for a low cost solution to effectively store and query tick and bar data. Databases like kdb+ and Streambase are too expensive for me. Building a custom solution with SSAS (Sql ...
3
votes
3answers
1k views

How much capital do I need to create a competitive automated trading strategy?

I'm a relatively small investor, and I'm interested in building my own fully-automated quantitative trading strategy. I also read about dark pools, and how difficult it is to get good prices on ...
3
votes
1answer
443 views

Interpreting QuantLlib implied volatility numbers

I am using QuantLib to calculate implied volatilities. I am trying to understand the calculated figures (especially, when compared to historical volatility). The calculated implied volatility numbers ...
1
vote
1answer
293 views

What are the pros and cons of applying for a patent on a financial model or trading system?

I've never understood the purpose of patents in the financial industry. What would be the pros and cons of applying for a patent on some financial model or trading system? What would be the ...
6
votes
1answer
610 views

Implied forward rates puzzle

Here's an interesting cocktail puzzle related to the term structure of interest rates. One of the primary competing theories for explaining the term structure of rates is the Rational Exepctations ...
4
votes
0answers
155 views

Is it more accurate to analyze returns on a calendar day basis than a trading day basis?

I'm rather new to the actual practice of this kind of analysis, but it just seems wrong to me to throw Mondays' returns in with the rest without accounting for the passage of time on the weekend when ...
5
votes
1answer
425 views

Market making in thinly traded assets

Could anyone suggest some literature or have any practical advice for marking a market in thinly traded assets with the following characteristics: 0-10 trades per day. Open limit-order book with 0-5 ...
3
votes
1answer
628 views

Science behind options pricing into Earnings event

I am wondering about studies regarding the uncanny options pricing into public company's earnings reports. The phenomenon being that the price of a straddle before earnings costs near exactly the ...
6
votes
3answers
337 views

What is an acceptable error on implied volatility?

Given an implied volatility surface (on equity indexes) and a calibrated model, what is the range of error on implied volatility a trader would accept ? This obviously depends on the model used to ...
1
vote
3answers
848 views

How to properly interpret accrued interest of bonds

Ever since I work in finance I was wondering what accrued interest (AI) are good for (see the wikipedia article for a short introduction). I think I have a clear picture in mind now and the usual ...
0
votes
0answers
40 views

Inferring Returns From Minimal Data Points [duplicate]

Possible Duplicate: How much data is needed to validate a short-horizon trading strategy? Suppose I have daily returns for a trading strategy against one month of data. Before starting ...
6
votes
0answers
1k views

Volatility-Based Envelopes

I am following an article by Mohamed Elsaiid (MFTA) about Volatility-Based Envelopes - a quite new technical indicator he has introduced, that is being used by Bloomberg. My goal is to get a simple ...
10
votes
2answers
691 views

Reference request: Survey article on GPU in Finance

I would like to get and idea of how people use GPUs in finance. I can find some specific papers or books on the subject. GPUs in binomial model, finite difference, monte carlo,... But I couldn't ...
10
votes
1answer
392 views

How does one measure the effect of latency on potential returns?

I am looking to evaluate the hypothetical advantage one trading system has over another in terms of the possible returns given their latency. Irene Aldridge wrote a piece (How Profitable Are ...
-4
votes
1answer
208 views

inflation > interest rate? [closed]

Currently, the federal reserve interest rate is 0-0.25%, and the inflation is 2-3%. Does this contradict the no-arbitrage principle? (The arbitrage being: borrow money at 0.25% and invest it in the ...
6
votes
1answer
376 views

What distribution should I apply to estimate the likelihood of extreme returns?

Say I have a limited sample, a month of daily returns, and I want to estimate the 99.5th percentile of the distribution of absolute daily returns. Because the estimate will require extrapolation, I ...
1
vote
1answer
615 views

How to compute portfolio weights from multivariate regression results?

Assuming that I performed a multivariate regression and I found a set of $k$ coefficients $\alpha_1, ..., \alpha_k$ for each of the factors $F_1, ... F_k$. I have then computed the following ...
2
votes
0answers
93 views

Option symbol conversion [closed]

Maybe more of a programming question, Is there a Ruby gem to facilitate conversion of an option symbol notation from one form to another? For example, one source provides TZA1220J18 but an API for ...
1
vote
1answer
482 views

What is a standard credit default swap contract and where can I find spread data? What alternatives exist to judge creditworthiness?

I'm doing some work for a company and one of my tasks is to research credit default swaps on banks and to write a page about them explaining what they are and how they're used to evaluate the banks' ...
1
vote
1answer
358 views

Use of AI in portfolio optimization

A new Danish hedge fund has received quite a large amount of attention in the last month or so. They are launching a new investment fund that uses proprietary AI to select stocks to invest in. They ...
2
votes
0answers
374 views

What is the use of the Euler equation in the Ramsey growth model?

I apologise for being brief, but I don't understand how is Euler equation used in the Ramsey growth model. I am reading a textbook "Dynamic General Equilibrium Modeling" and there is mentioned about ...
5
votes
2answers
327 views

Does a coherent risk measure satisfy the four axioms of von Neumann–Morgenstern?

What is the relationship between the axioms of Artzner et al (1999) for coherent risk measures and the axioms of von Neumann-Morgenstern (1944) for the expected utility theory?
2
votes
0answers
226 views

Pricing with collateral

I have been confused about many things concerning the princing of securities with collateral. We can prove that today's price of a security( fully collateralized and within the same currency) is the ...
10
votes
1answer
358 views

Is Arithmetic Return Bias Basis of Low Vol Anomaly?

An observation in capital markets is that the connection between return and risk (measured as volatility) is not that straightforward (at least not as modern portfolio theory assumes). One interesting ...
3
votes
0answers
133 views

Arbitrage free price of a derivative when the price is collected over the lifetime of the derivative

Let $X_t$ be an american style financial derivative with random exercise time $T$ where $t$ and $T$ belongs to some finite set $A$. Buying this derivative requires the buyer to pay $p_t$ up to time ...
4
votes
1answer
735 views

Risk-Parity Portfolio Optimization using Extreme Optimization in C#

I'm trying to create a risk-parity portfolio in C# using the Extreme Optimization routines. I'm mostly trying them out to see if I like them or not before I buy them (I'm a student so money is ...
8
votes
1answer
2k views

Multilayer Perceptron (Neural Network) for Time Series Prediction

I have it in mind to build a Multilayer Perceptron for predicting financial time series. I understand the algorithm concepts (linear combiner, activation function, etc). But while trying to build the ...
7
votes
4answers
918 views

What commercial financial libraries are available to outsource implementation risk?

During our daily jobs as quants, we tend to be willing to develop all the quantitative libraries ourselves. While I know that we need to develop specific algorithms which are the foundations of our ...
3
votes
1answer
3k views

Equivalency of FX forwards and FX basis swaps for risk-management purposes

Can one deem an FX float-to-float swap and a FX forward equivalent on dates immediately after repricing? The reason I am asking, I am hedging something that can be modeled via an FX forward, I was ...
5
votes
1answer
339 views

With there being such a high demand for electronic trading or just trading in general why are market hours so limited?

I am curious why a lot of market hours are something like 9 to 3 or 9 to 4 pm when there is such demand and so many prop shops and more out there. I know certain markets are continuous trading but a ...
1
vote
1answer
266 views

Risk Neutral Probability and invariant measure

Is a risk-neutral probability a special case of an invariant measure?
3
votes
2answers
231 views

What does ABBO (Away best bid and offer) refer to?

I know what the NBBO is but I've seen mention of ABBO and I'm not sure what it means?
8
votes
3answers
244 views

Are there any standard techniques for adding realistic synthetic microstructure noise to a price series?

This may seem like a strange question, but for my particular application we need to actually add synthetic microstructure noise to real time charts. The signal should still be representative of the ...
6
votes
1answer
195 views

Estimate price movement per unit of volume for daily data

I'm working on backtesting a number of stock trading strategies and need to estimate how much the execution price will likely deviate from the historical close price for that asset using daily data; ...
8
votes
1answer
2k views

What is an efficient data structure to model order book?

What is an efficient data structure to model order book of prices and quantities to ensure: constant look up iteration in order of prices retrieving best bid and ask in constant time fast quantity ...
4
votes
1answer
1k views

how do we estimate position of our order in order book?

how would you estimate your order in the exchange order book? The order of order events and acks is not deterministic or guaranteed. How could you write an algo to estimate accurately your position in ...
1
vote
4answers
2k views

What are the common trading systems for hedge fund automated trading?

Is there any common trading system that is implemented by hedge fund, especially for equity or forex automated trading? I know some big names like Sungard and Bloomberg. Is there any other choices ...
3
votes
1answer
128 views

Do Bond Put Dates always fall on Coupon Dates (for non-zero coupon bonds). Calculation rules for Coupon Dates

This may not be the most appropriate SE site to ask this question, but I can't seem to find a better place to ask, so here goes: Do Puttable Bonds' put dates always fall on Coupon Dates? When they ...
4
votes
1answer
2k views

Why use a column database for tick/bar data?

I often hear that column-oriented databases are the best choice method for storing time series data in finance applications. Especially by people selling expensive column-oriented databases. Yet, at ...
1
vote
0answers
129 views

Is there a general format for various sources of futures market-data?

I am developing a market-data engine that receives market-data from different futures exchanges. So I need a general format to deal with sources from different exchanges. Protocols like FIX only ...
-3
votes
1answer
141 views

Methods for distributing cash into allocation

Are there any methods/techniques that cover distributing cash into a specific percent of a portfolio asset class while gaining the best average price? As a simple example, a portfolio starts with ...
1
vote
1answer
1k views

Calculating portfolio allocation beta with different asset classes?

I'd like to calculate portfolio allocation beta on a portfolio that has different asset classes. The portfolio may be made up of: ...
6
votes
3answers
2k views

What really drives option implied volatility?

A common and oft repeated belief regarding options volatility is that implied volatility increases due to people bidding up a contract, usually related to anticipation of the outcome of an expected ...
0
votes
4answers
278 views

What is the Benefit of holding a short option?

i am new to corporate finance and ask myself why a investor is interested in being short on a Option? The only he can win is a premium but he can loose much more. I understand with being a short I can ...
8
votes
5answers
2k views

Why is the Drawdown measure not used for portfolio optimization?

I was asked yesterday by a colleague why we are doing asset allocation using optimizers which target, for a minimum expected return: the portfolio with the minimum variance or the portfolio with ...
2
votes
1answer
3k views

How do I model GARCH(1,1) volatility for historical indexes in Matlab?

I'm currently working with historical index data from Yahoo Finance and would like to plot the GARCH(1,1) volatility of these indexes. I'm working with the Datafeed and Finance Tollboxes in Matlab ...
3
votes
3answers
418 views

Why should there be an equity risk premium?

After years of mathematical finance I am still not satisfied with the idea of a risk premium in the case of stocks. I agree that (often) there is a premium for long dated bonds, illiquid bonds or ...
1
vote
1answer
298 views

Matlab toolbox for IQFeeds

Does anyone know how to connect IQFeeds with Matlab. It seems the datafeed toolbox only accepts Reuters, Bloomberg, Yahoo and one or two more. I've been looking all over the place for a Matlab toobox ...
7
votes
1answer
472 views

How to better understand trading signals?

I am looking to get a better understanding of an output from a trading strategy. Basically I have a daily equity curve lets call it $Y_t$. I have defined a bunch of independent variables $X_{it}$ that ...

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