# All Questions

12,051 questions
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### Mean Variance Investment problem

I attach a part of a paper explaining how the weights of a market portfolio are derived. I do not understand how equation 5 has been derived and, in particular, where the zero beta portfolio's return ...
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### SSVI parametrization motivation , SSVI implementation

I've read the following paper of Gatheral and Jacquier https://arxiv.org/pdf/1204.0646.pdf about volatility surfaces. I'm thinking about the SSVI surface. Is there any motivation why they choose ...
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### Calibrate a SABR model?

How do you calibrate a SABR model using R/Python/Matlab? Using the data example from: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2725485 1) How does one calibrate the SABR model? 2) How ...
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### How to buy a stock as close to the marketopen price as possible in NSE?

I can place an order at 9.15 1s or 0s, using the API. The maximum change I can incur is +0.4%, kindly give your opinion on how I can do this? I use kite zerodha
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### How to determine the cross rate in a triangular arbitrage

I am very confused about what two currencies are to be chosen as the cross rate in a triangular arbitrage. For example, when the bank quotes are ¥180/£ $1.5/£ ¥130/$ Does the cross rate have to be ¥...
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### Multivariate Hawkes Process Simulation

I am trying to implement Ogata's thinning algorithm to simulate multivariate Hawkes Processes in Python (the algorithm can be found here: https://www.math.fsu.edu/~ychen/research/Thinning%20algorithm....
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### Why results might differ when using risk-adjusted returns

Dependent variable is cumulative returns for a 40-trading-day window after an earnings announcement. Independent variable of interest is a variable related to investor attention around the earnings ...
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### QuantLib - Synthetic deposit/FRA rates in yield curve

In my flat forwards dollar curve implemented in QuantLib I would like to add the following instrument: Today is 12/28/2018 Pillar quote is 1% p.a. (ACT/360) Pillar start is 1/30/2019 (specific ...
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### Most Recent Stock Return for a Machine Learning Project

I am doing a machine learning pet project that requires me to construct a column for stock return between Jan 1, 2018 and today (Dec 26, 2018). I am basically looking for the most recent annual return ...
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### Shrink covariance or correlation matrix

Is it preferable to shrink the covariance matrix vs the correlation matrix? Technically this amounts to either shrinking the sample correlation matrix and then transforming the shrunk correlation ...
120 views

### Basic question on USD Interest Rate Swap

I am just starting out as a rates and derivatives trader. Can someone please recommend some books for trading USD interest rate swaps (including risk management)? Any additional guidance would be ...
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### Short position returns with negative NAV

I am using data on the opening, change and closing of short positions, but I am interested in when the profit/losses are made. Hence, I calculated daily the value of the short position by taking the ...
34 views

### Risk neutrality coherence with risk aversion

I haven't been able to find an understandable explanation why the risk neutrality is coherent with the risk aversion implication of the expected utility hypothesis. I can see that when using the risk ...
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### variance unsystematic component

I was wondering how to calculate the variance of the unsystematic component in an asset. For example, if an asset's expected return is 10% with standard deviation of 6% and a beta of zero. What ...
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### Why can derivatives be viewed as a portfolio of the underlying and the riskless asset?

I am struggling with the statement: "Every derivative of the underlying can be viewed as a portfolio of the underlying asset and the riskless asset." Is this based on the put-call parity? Also I ...
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### implied forward price using put call parity

I am struggling to understand how to model implied volatility for German stock market. I found in one article that I have to specify first the forward price to which it is associated using put call ...
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### What are the benefits of publishing papers in mathematical finance/trading?

What are the benefits of publishing papers in mathematical finance and trading. Let us assume that the primary goal of a person/entity is to make money and reduce losses. Wouldn't publishing ...