Questions tagged [quantitative]

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What does structured estimator mean?

I'm reading Ledoit&Wolf's paper "Honey, I shrunk the sample covariance matrix" and it is mentioned a lot of time, but I don't understand what it means. I thought that probably referred ...
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Maximum Drawdown in Log

N. Taleb on Twitter and in a video has said we should consider a log of drawdown of financial assets because in his words Log makes things symmetric, from [0, \infty] into [-\infty, \infty] If P is ...
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Pricing Forward Rate Agreement in QuantLib

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how to estimate Geometric Brownian Motion parameters on long timeseries [closed]

I'm working on a 50-years financial timeseries and I would like to simulate GBM paths from it. The first thing I'm supposed to do is to estimate the drift $\mu$ and the volatility $\sigma$ parameters. ...
1 vote
0 answers
115 views

CEV model effective simulation

I want to simulate the following CEV process : $$ dM_t = \sigma_t M_t^{\eta} dW_t $$ Using Euler discretization to $M_t$, if at a given time $t$, $M_t$ takes a negative value then $M_{t+1} = M_t + \...
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1 answer
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Martingales and Arbitrage in Multiperiod Securities Markets

I have been reading the paper "Martingales and Arbitrage in Multiperiod Securities Markets". The paper works in the probability space $(\Omega, F, \mathbf{P})$. $X$ is defined as the set of ...
0 votes
1 answer
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How to scale t-bond yield movements on a chart to visualize its relative impact to the pricing of other assets?

How does one scale the 10yr yield on a chart to visualize its relative impact to asset valuations? I.e., so that the risk-free rate moving from 1->2% shows as a much larger movement than 11->12%....
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1 answer
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How to backtest a strategy with irregular in-out signal?

Hi I'm currently backtesting an event-driven strategies. Unlike factor strategy which has a regular rebalancing interval, event-driven strategy is conducted whenever there is an event. Since we do not ...
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Locally riskless

Most derivations of the Black-Scholes formula end up with the following dynamics of some (hedged) portfolio: $$ \int_{t=0}^{T} \left(\frac{\partial f}{\partial \tau}(S(t),t)+\frac{1}{2}\cdot\frac{\...
2 votes
1 answer
189 views

What is a good daily newsletter?

What newsletters do you read daily that help you learn new methods, keep up to date on news, new research, etc in quant finance? Looking for something similar to those morning newsletters sent out by ...
1 vote
0 answers
48 views

How do you cross-sectionally standardize a variable?

i am doing research on a so-called carbon beta where I made a portfolio that takes a short position in 'green' stocks and a long position in 'brown' stocks, from a period of 2005 until 2020. So from ...
1 vote
1 answer
74 views

Vasicek interest rate of T-forward measure [closed]

I know dr of risk-neutrual measure is There is a price of a pure-discount bond can be derived by computing the expectation, I get: where A and B are: why dr becomes to: under T-forward measure?
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I am struggling to prove how when volatility tends to infinity, call option is equal to St and pt option = Ke-r(T-t) [duplicate]

I know how to prove when volatility tends to infinity but i am struggling to prove this. Can anone help?
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Risk Factors, Portfolio Optimization

I really need help with a project that I am working on, for my university.I study in Ecuador and the research material here is very limited. Nonetheless I have tried my best to start with the basics ...
1 vote
0 answers
67 views

Modeling investment decisions with ML / Econometrics

I was given the task to decide whether it is a good time to invest into a certain stock index (e.g. S&P 500) or not given a 6 months Investment horizon. The goal is to get one of the following ...
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79 views

Pricing asian options with Monte Carlo and brownian bridge

I am trying to price arithmetic asian options using Monte Carlo method and a brownian bridge construction. My code does not seem right as the price with a geometric conditioning gives me a price of 5....
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2 votes
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67 views

Zero coupon price using Vasiceks model under the Real-world P measure model

I'm wondering if there is a way to work out the formula for the price of the zero-coupon bond using the Vasicek's model (P measure). I have tried to find reference on it but could not, I don't know if ...
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161 views

S&P 500 historic high frequency data

I am trying to reproduce the analysis discussed in https://arxiv.org/pdf/cond-mat/9905305.pdf where they use high-frequency data (1minute thick) of S&P500 from 1984 to 1996. In particular, I want ...
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1 vote
1 answer
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30E/360 bond payment schedule

I have a bond that was issued on the 30th of April with 30/360 European day convention basis and semiannual compounding. As far as I understand payments should be every 180 days according to the day ...
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1 answer
331 views

Alternatives to Kelly Criterion

I am preparing for Quantitative Trading interviews and I know that they basically require you to solve problems on the probability of winning in a given game and then they would ask you: How much ...
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2 votes
0 answers
70 views

how to do hedging in global market give the time zone issue [closed]

Hi I am considering a question: Give you have a global portfolio, consisting of U.S stocks, Euro Stocks or even Japan stocks and you have to rebalance daily according to my calculated trading signals. ...
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2 votes
1 answer
372 views

Pricing a Forward Rate Agreement using QuantLib Python

Can someone please help with the pricing of the following forward rate agreement using QuantLib Python? A 3x6 forward rate agreement, with a notional of $100,000, the FRA rate being 6%, The FRA ...
2 votes
1 answer
206 views

Reflection principle of the Brownian motion

really appreciate some guidance on how to get the following equality:
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1 answer
524 views

Difference arising between Dirty Price and NPV using QuantLib Python

I have used QuantLib Python to price a fixed rate bond. My codes are as follows: ...
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1 answer
396 views

Explanation for Different Piecewise Yield Term Structures from QuantLib Python

I am new to QuantLib on Python, but as far as I understand, there are different types of piecewise yield term structures which exist on QuantLib which are bootstrapped on a number of interest rate ...
4 votes
2 answers
759 views

Where can I find detailed information of famous quant companies such as Renaissance Technologies?

I am doing a report about famous quant companies such as Renaissance Technologies. Where can I find information such as ranking of these companies and their fund's rate of return.
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122 views

How to implement a factor model from scratch?

Imagine we have price-volume data set and fundamental data set which gives us all the info we need (e.g,. OHLC, earnings, dividends etc.) for stocks listed in a market for long time period. I.e., you ...
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4 answers
696 views

Multi-Period Contribution

I've read multiple research papers but can't find a good answer as to why multi-period contributions don't add up to the returns of a portfolio. I understand that arithmetic sums miss the compounding ...
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1 answer
305 views

Coupon Adjusted Spread vs Z-Spread

Hi so I'm trying to figure out how to adjust for the coupon value in the Z-Spread of a given bond. For example we can take UKRAIN 9.75 11/28. The coupon is 9.75 which is quite a bit higher than the ...
1 vote
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43 views

Model Documentation role [closed]

first timer here,I received an 'inmail' on linkedin from a recruiter regarding a role in model documentation team as part of the quantitative modeling and analytics department of a 'global bank'. The ...
4 votes
1 answer
169 views

forward variances under rough bergomi

I have seen in several papers on rough volatility using the following expression for the forward variances $$ d\xi_t(u) = \xi_t(u) \eta \sqrt{2H} (u-t)^{H-1/2}dW_t $$ Can anyone explain to me how this ...
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Change weights of the portfolio [closed]

I have spent a lot of time finding some trading alphas. Now, I have about 10 alphas to trade Future, I also optimized the portfolio by using Markowitz's Modern Portfolio Theory (MPT) to get weights. ...
0 votes
1 answer
101 views

Curve fitting under different regions and stitching

Is there a way to fit a 2D curve under the following conditions: The curve is defined by 2 functions for x>a, and x<a Prefer a fit that is continuous and differentiable at x=a
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63 views

Optimal order placement in limit order markets

I am reading the paper: https://sci-hub.do/10.1080/14697688.2016.1190030 because I want to split the target shares in market order book and limit order book. I have a question when it comes to page 10 ...
2 votes
0 answers
28 views

Latest and currently utilized research on modeling option pricing with IV smile

As per title, where would I find the latest research papers on modeling option pricing, accounting for IV smile? I'm specifically interested in papers that already found practical application in some ...
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What can we say about digital puts and calls with different strike prices?

I am a noob to the field of quantitative finance. I am reading this book by Mark S. Joshi. Can you help me make sense of one of the exercise questions? Here is the question (from page 40 of the book): ...
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1 vote
1 answer
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What's the interpretation of the probability of default implied from CDS spreads?

What's the time horizon of the probability of default implied from a CDS spread? Given CDS = PD*(1-R), if I use a 5yr CDS spread in the formula, is the implied PD the probability that that name ...
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2 votes
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64 views

Should the sharpe ratio always change with number of assets?

I am trying to understand if the Sharpe ratio of a portfolio change if we increase or decrease the number of assets in the portfolio. It would be helpful if you could provide an explanation with ...
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Cumulative returns from ROI of individual trades

I've a series of ROIs: $R(n) = [r_1, r_2, ... r_n]$ generated from taking $n$ trades. Each ROI value is in percent $[0, 1]$. How do I generate cumulative return $C(n)$ from this data? My understanding ...
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2 answers
264 views

Utility Function with respect to Quantitative Finance

I am trying to understand utility function and its application in quantitative finance. I have done some preliminary research on the same (have gone through Paul Wilmott on Quantitative Finance) but ...
2 votes
0 answers
512 views

Why does the Hurst exponent pseudo code not match the Python implementation?

I am working on understanding the Hurst exponent calculation by Ernest Chan; however, the description of the algorithm does not match the Python implementation. Chan [Algorithmic Trading: Winning ...
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1 answer
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Agency Fixed Rate RMBS Yield Decomposition

I'm trying to find the best way to decompose the yield on an index of fixed residential MBS securities and want to open up the question to the community. The goal is to look at this from a ...
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1 vote
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Is there a scientific significance to Fibonacci numbers in economics?

I am new to the field and have read popular articles on Fibonacci numbers, but I did not find it grounded in academic research and would love to know if there is a research basis for this and whether ...
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1 answer
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Looking for a Book which can summaries last 20 years of economics [closed]

What I would like to read is how the economic spectrum have changed over the period ( Central banks policy decisions , QE 1/2/3 , ECB TLTRO, BOJ unlimited stimulus ). How the central bank dealt with ...
1 vote
2 answers
671 views

How does Linear-Exponential Loss (Linex) function tend towards Quadratic Loss function?

Thank you for your help everyone, and I apologise beforehand if this is a lousy or dumb question. I am looking to read up more on Quadratic Loss & Linex Loss, and forecast optimality. In my ...
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Does Alpha Vantage provides real-time data for free? [duplicate]

I tried a python script with alpha vantage API. But it was not giving the real-time price for GOOG, though the time was Monday, 11am ET. Does it really provides the data for free. If not, please ...
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110 views

How to find Flow of Funds and Money Trail in Python for Finance

I'm trying to find Flow of Funds and Money Trail using python but i'm stuck in middle of it not understanding what to do next My Main goal is to finding Flow of Funds i.e flow of transaction from ...
0 votes
3 answers
959 views

Daily to Monthly Performance Attribution - Getting Effects to equal the Excess Return

I am building a performance attribution tool on Python to help us understand the asset allocation, stock selection effects of our fund. We are using daily price data for each component within the ...
3 votes
4 answers
3k views

Algorithmic Trading: Python vs SQL

I am new to algo trading. But I have bit of coding experience in SQL. Now I am planning to develop a Algorithmic Trading system. In here I am storing all the historical data in Database (PostgreSQL DB)...
0 votes
1 answer
129 views

How Can I Use Python and Data Science in my Personal Trading? [closed]

I started learning about the stock market during the Pandemic. I don't necessarily think to be a quant but I'd like to atleast use my skills in programming in python, data visualization, (i don't ...