# Questions tagged [regression]

Techniques for modeling and analyzing several variables, when the focus is on the relationship between a dependent variable and one or more independent variables.

316 questions
Filter by
Sorted by
Tagged with
30 views

### Hedonic regression to create an index?

I’m having a hard time understanding how hedonic regression can be used to create an index. Hedonic regression seems to simply be multiple regression by a different name, correct? We have several ...
69 views

### CAPM alphas have unexpected p-value distribution

I am trying to "test" whether the EMH holds by testing for every stock in the S&P 500 whether it has a "significant" CAPM alpha. If the EMH is true, then the null-hypothesis (...
44 views

### Dummy variable - regression model

Q : Use a dummy variable and estimate a multi-regression model to investigate if the spread of COVID-19 (using 11 March as the data) had an impact on your company's beta and its return I have used the ...
27 views

### Statistical Inference of Variance Risk Premia

Good afternoon, I am currently following Carr and Wu (2009) to compute variance risk premia from options written as (RV-EV)*100 for the payoff of a long var swap position. Now I want to see whether my ...
45 views

this is my first post in this forum, so if I'm doing any kind of mistake please let me know. My situation is as follows: I'm currently writing my Thesis and I'm looking into the discrepancies of ETF ...
25 views

### Regression of stochastic integral on Wiener process

This question is a follow-up from the following: conditional expectation of stochastic integral so I won't repeat myself regarding assumptions and notation. Using Brownian bridge approach, we know ...
16 views

### Variable transformation for probit regression model

I am trying to understand a credit rating model which is used in my company to assess company customers with large exposures. This model is provided by Moody's and assigns grades (similar to Aaa, Aa1, ...
36 views

### Is there a way to predict backtest or walk-forward performance using linear regression results?

For the sake of example, say I regress S&P 500 returns (dependent variable) against small-minus-big market cap size (independent variable) and get a coefficient of 0.1 and an $R^2$ of 0.9. Is ...
12 views

### Fama-Macbeth 2nd Step - use absolute or real values for intercept and lambda?

I'm testing CAPM's performance during 2020. I have estimated Betas using Fama-Macbeth Approach (1st step). Now, I am trying to calculate t-stats for 2nd stage cross-sectional regression. I've run 12 ...
19 views

### Fama-Macbeth CAPM Test First Stage Portfolio Construction Problem

I'm trying to test CAPM's performance during 2020 and can't decide which method of portfolio construction to use: Use 2010-2015 for portfolio sorting and 2015-2019 for estimating time-series Beta of ...
29 views

### Not getting coefficient estimates when running a Fama Macbeth Analysis

I am trying to run a Fama Macbeth analysis in R, where I am using the 'pmg' function with the following code: ...
22 views

### Size factor - Root Market Cap Weighted

I saw in a paper for specifically the Northfield equity risk model that when constructing their factors they use the standard, time series regression to get each stock’s beta to a specific factor and ...
29 views

### Fama-French model interpretation of coefficients help

So i've run a regression for a stock and these are the results. I was wondering if I'm right in inferring that because the SMB coefficient is negative, this particular stock I've chosen has a large ...
102 views

### Regressing changes in yield/yield curve

If I'm regressing changes in individual points along a yield curve and measures of changes in level/slope/curvature of that yield curve against the returns of some random variable then do I want to ...
82 views

### Best method to determine future success or to determine best linearity?

Long time viewer, but first time poster, so excuse me if i'm in the wrong place please. Anyway, I am working on a project that is pretty interesting. Through data mining, I am able to gather a ton of ...
38 views

### modeling example for price changes using HFT data

In Rue S. Tsay’s Time Series book, a decomposition method is described for analyzing price changes using HFT trade data. A change is modeled using the following variables, A indicates price change ...
117 views

### Fair Value Regression Methods

Recently we had an invited talk at our university (I'm Ph.D. student in ML department, so I'm sorry if my question is stupid, since I do not have quantitative finance background), where one researcher ...
29 views

### Creating a single data set using daily trades

I try to model the price change of a stock using the daily trades. I have 3-months of daily trades data of an exchange. I want to create a single data set using this data by combining each days' data. ...
28 views

### EGARCH and GARCH effects with White Noise squared residuals

I'm asked to model a series which it's returns are white noise and after adjusting a regression like $r_t=c$ and looking it's squared residuals (white noise too) I'm asked to adjust a GARCH and EGARCH ...
107 views

### Fama McBeth - Significance

The very last step of the Fama McBeth procedure is to aggregate the estimated regression coefficients by taking their mean. The mean is then the estimate for the "overall" regression ...
88 views

### Difference between returns

I have a monthly time series of monthly returns for a specific factor that I'm investigating, the Quality factor QMJ as proposed by Asness et al. (https://www.aqr.com/Insights/Datasets/Quality-Minus-...
52 views

### Can you apply GARCH to ARIMAX models?

Is it possible to apply the idea of GARCH to time series models that include exogenous variables? For example, say I estimate a cash flow forecast model. Does it make sense to model the residuals by ...
15 views

### Identifying factor model shifts in different periods

Given a set of K independent variables X = (x1, x2, ..., xk) and a dependent variables y, I try to run the step-wise regression ...
72 views

### How often to tune the regularisation parameter in LASSO?

I'm trying to implement the following paper: Avellaneda & Lee (2010), Statistical Arbitrage in the US equities market. To build the strategy, the idea is to trade a stock and hedge using a basket ...
108 views

### Sigma squared times identity matrix in normality of errors

In OLS regression, we have the normality of the error terms $$\varepsilon \sim N(0,\sigma^2I_n)$$ I understand that we want to have a constant variance for homoscedastic errors, but why is $\sigma^2$ ...
122 views

### Minimizing the sum of squared errors in linear regression (proof/matrix notation)

I'd appreciate you helping me understanding the proof of minimizing the sum of squared errors in linear regression models using matrix notation. I'm trying to derive by minimizing the sum of squared ...
48 views

### transforming variables

I am would like to create a regression model with different variables however before using these variables in my regression model I would like to transform the variable in order to make it more ...
39 views

### The question is related to the regression analysis - stationarity testing

How to interpret different scenarios in ADF test. Scenarios: ADF Test: Type: None, Drift, Trend What exactly each of the types specify and when to use which 'type' during performing stationarity and ...
33 views

### Fama MacBeth regression over long time horizons

I have a question related to Fama MacBeth type regressions: I use total stock returns as the dependent variable and various variables (including market beta, size, valuation) as explanatory variables. ...
20 views

### basic cross sectional regression question for dummy variable

how does a cross sectional regression works if you have only 1 independent variables being a dummy variable-ratings. lets suppose building a proxy benchmark for similar rated company.
39 views

### How to measure the sensitivity of a fund to a set of indices?

I'm trying to understand how recently created funds work and ultimately derive a sort of a probability distribution for their future returns, by approximating them with indices and then using the ...
50 views

### Which features based on orderbook information could be relevant for price prediction?

I have some orderbook data, including 5 ask prices, 5 bid prices, amount of asks and bids for every price, and midprice which is equal to (best bid + best ask)/ 2. I would like to predict absolute ...
59 views

### Performance measurement

When I regress the excess performance of a portfolio on the MKT Factor using daily data. I get a Beta of 0.95 and an alpha of 0.00011 that I annualize *252 = 2.77% I know that the annualized return of ...
87 views

### Factor model for Gold has low adjusted R2

I am trying to build up a factor model for gold. To be able to identify the correct factors, I did a correlation analysis between a few factors vs gold and I integrated this analysis with what I saw ...
55 views

### Alpha and returns annualized

Basic question , but if I do a daily regression and get an alpha of 0.00004. Should the yearly alpha be : 0.00004 *100 *252 = 1.008% OR 0.00004 * 100 *365 = 1.46%. What is considered the yearly alpha ...
47 views

### How can the different r2 score of an AR(1) model on prices vs. returns be explained

This is maybe a silly question, but I want to understand. As far as I understand an AR(1) model, it is basically a linear regression model with the same but lagged variable, right? However I am ...
94 views

### Factor Model Regression Market Factor Statistically Insignificant After Adding Extra Factors

I am running a simple 4 factor model which includes the factors: Benchmark (Market - FortyConsumerSixtyHealthcare), SMB, HML and MOM. When I simply apply the regression to the portfolio returns and ...
88 views

### How can you use factor modelling to improve your current portfolio [closed]

Firstly let me apologise if this has been asked on on here before - I went through some of the factor modelling post on here but I've struggled to find the answers. I am new to the quant world and I ...
105 views

### Reintegrating Fractionally Differentiated Time Series Prediction

I am working on a supervised learning approach to Time Series Regression, and am currently investigating fractionall differentiation (optimizing the stationarity/information tradeoff) discussed ...
41 views

### Is there a noticeable difference in making scatter plots and regression models with tick-data or with candle data?

I am asking this question because I want to research some variables. An example is the RSI where the current RSI is updated every tick. This means that the value of the RSI is fluctuating a lot inside ...
72 views

### Low volatility in factor regression

Let's say we are working with the standard Fama-French 3 factor model and we want to add a low volatility factor. Is it alright to add a low volatility risk premium in a model such as the CAPM or FF3. ...
58 views

### What date to pick for regression on global stocks

Let's say I have a return of a stock in Japan that I wish to regress on the S&P 500 index using daily data for 1 year. Since the Japanese stock market has different holidays than the US, the dates ...
72 views

### does oversampling affect the correlation?

I have a dataset of monthly data. One column is my target variable and all the other are my feature. I have computed correlation between my target and all the other feature and then I made linear ...
59 views

### Choice of factor model based on correlation

I have a portfolio of assets. Each assets have been discretionally (based on investment manager experience) related to economic factors like (like exchange rate inflation spread etc). Now for each ...
36 views

### In your experience, when trying to predict something that occurs, do you model with a fixed time period?

Let's say you are building a simple model (like the classroom examples) of trying to predict, given past information, if the stock goes up or down in the future. One could, like in classroom examples, ...
101 views

### Adding more factors to Fama French Carhart 4 factor model

Does it make sense to add more factors such as Quality Minus Junk (QMJ) and Betting Against Beta (BAB) in the Fama-French-Carhart model? Also, if anyone can point me to an article it would be ...
144 views

### Should Fama-French coefficients be calculated with daily or monthly returns?

I noticed when I regress the return of a portfolio on the Fama French 3 factor model that the value and the statistical significance of the coefficients vary when I use daily versus monthly portfolio ...
65 views

### Global portfolio alpha

How does one compute the alpha of a global portfolio. Let's say we are using the Fama French 3 factor model and we have a portfolio of 50% US stocks and 50% German stocks. Should the regression be ...