Questions tagged [factor-models]

Econometric model that have the purpose to measure the effect of different risk measures on portfolio asset returns.

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131 views
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Finance: Portfolio - Long Short Portfolio construction

I am trying to construct a Long / Short portfolio in R. Say I have two portfolios Tech and Mature and I want to go long on the <...
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121 views

Alpha vs. Sharpe Ratio

What are the main differences between a strategy's Sharpe ratio, and its alpha based on the Fame French factors? Does it make sense to evaluate them both in a thesis?
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Are these factor returns are to low?

I have just found a statistics summary of different MSCI factors (based on the Barra Global Total Market Equity Model for Long-Term Investors (GEMLT)). I wonder why the annual returns are so low ...
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77 views

What is the effect of leverage (ability to short stocks) upon the Fama-French regression coefficients?

I have optimised a set of portfolio and subsequently regressed the returns against the fama-french-Carhart factors. I have two portfolio, one in which short sales are allowed (the portfolio can take ...
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16 views

Regression Assumptions for Fama French 3 factor model and Carhart 4 factor model?

i want to run regression for Fama French and Carhart model for my thesis. so, should i check all the regression assumptions or only multiocolinearity.?
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Stochastic discount factor for factor research

Often, after presenting a new factor technique, the paper calculates an SDF by doing $\Sigma ^{-1}\mu_F$ i.e. mean variance optimization on the factors. What is the significance of doing this ?
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61 views

Interest Rate Swap curve: CMS vs. OIS?

I'm working on a project where we're trying to create a database model where we can (daily) update collected data in order to make RPA predictions. We received data from Interest Rate Curves called ...
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2answers
144 views

Comparing Investment Style with Fama French 3 Factor Model

How do you evaluate this? I have tried searching online but there are no matching results. Is it just a simple average of the 3 Betas? And how do we determine the investment style aggressiveness? In ...
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71 views

What is factor timing?

I see the use of factor timing here and there, yet it is impossible for me to understand what it is about. Could someone explain what people mean about timing a factor, maybe through the use of a ...
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Exposure/Factor Analysis on a loan portfolio?

I am working on performing factor analysis on a loan portfolio. This is my understanding so far, and I was hoping that some of the smart folks here might be able to chime and guide me through this ...
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35 views

Risk neutral valuation [closed]

In a world with three possible states (1, 2, 3) and three assets (A, B, C), the payoff matrix looks like this: $r_A;_1,_2,_3 = 110, 110, 110$ $p_A = 100$ $r_B;_1,_2,_3 = 100, 50, 40$ $p_B = 70$ $...
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25 views

Non-redundant asset?

I've been solving many exercises with three assets that have two possible payoffs each, one payoff per possible future state. The question is always the same, i.e. is any asset redundant. After ...
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Factor model alternative? [closed]

Suppose there is a Fama-French model estimated for a stock of Shoemaker Ltd.: $α = 0.01$ $β_M = 0.9$ $r_M = 0.12$ $β_S = 0.3$ $S = 0.05$ $β_H = 0.2$ $H = 0.06$ $r_F = 0.03$ How would you ...
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How should I interpret the (insignificant) coefficients of Fama-French 3-factor model?

I am writing a mid-term thesis on the Fama-French factor model. I have built 5 portfolios sorted by the Book-to-Market ratio. The first portfolio is the lowest-BM group and the last portfolio is the ...
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30 views

Relationship between correlations of long only and short only portfolio with long-short portfolio?

I am working on one quality and value factor, the correlation between a long-only or short only portfolio of these two factors is respectively 0.7 and 0.8, and the correlation between combined long-...
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2answers
87 views

Stress testing fixed income Yield curve with Nelson Siegel

I am attempting to stress test the Zero coupon Yield curve using The Nelson Siegel model as described in the following papers : Generating Yield Curve Stress-Scenarios Representative Yield Curve ...
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80 views

how do factor models in equity portfolio management add alpha?

This is a general question on how fund managers use factor models to add alpha. I understand how a risk model can tell you what factors a portfolio has exposure to. But can a risk model actually tell ...
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1answer
63 views

Barra model: why standardize the fundamental risk factors?

The two main types of risk factors included in the famous Barra model are called the "fundamental factors", and "industry factors," and the thing that I do not understand is why are only the former ...
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60 views

Alpha estimation from factor models

This question makes reference to section 8.4 - Application to performance measure - of the 2007 publication "Performance Measurement for Traditional Investment" by Véronique Le Sourd. You can find the ...
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136 views

Rationale of Fama Macbeth procedure

I am confused about the rationale behind the Fama Macbeth regression methodology. I understand how to practically perform the two steps but not why one should do so. For instance, considering the ...
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Insight on how factor models achieve dimensionality-reduction?

Going through the literature on factor models, I keep seeing the phrase "dimensionality reduction" and how factor models allow for the modelling of assets in high-dimensional cases, and I would ...
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39 views

Portfolio Return Decomposition

Barra gives factor weights for a common set of factors, for each asset. Given a long-short portfolio, is there a way I can combine the individual factor weights to get the factor exposures for the ...
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49 views

Factor Loading with multiple exposures?

How do I decompose portfolio exposures when assets may have exposure to a few of my risk factors? For instance I have some sector and state specific risk factors. If I have a bond with exposure to ...
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1answer
65 views

Naive question: how do factor models inform portfolio construction?

I have read plenty on the topic of factor modelling, but, in the end, after one has decided upon the factors to include in a model, how do all the Betas how tell one how to weigh each asset in a ...
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1answer
75 views

Why do Factor Models set up their factors differently from regression?

While this may be awkwardly-titled, I hope that my question becomes clearer upon reading. So this is what I gather about Factor Models: they are statistical models set up to explain the returns, ${...
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1answer
38 views

How would one go about verifying a factor model

Suppose I have a factor model $$ \rho_i = \sum_J \beta_{iJ} \rho_J + \epsilon_i $$ where $\rho_i$ is the excess return of asset i over the risk free rate and $\rho_J$ is the excess return of the ...
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What is the earliest mention of ROE as an asset pricing factor?

Can anyone tell me, what is the first application of ROE in an (empirical) asset pricing model? I am aware of the 2011 paper by Chen, Novy-Marx and Zhang. Are there any earlier papers on the matter?
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Is it possible to adapt Fama French Model with a 6 factor Model?

I am currently working on my thesis and I was wondering if it was possible to add a new factor to the five model one. This new factor would include the ESG's characteristic of the stock. I would like ...
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Why are thousand-ish-factor vendor risk models not extremely overfit and inaccurate?

Many vendor risk models have many hundreds, or even thousands of factors (many of which are highly correlated with each other). Underlying all these risk models is some sort of covariance matrix in ...
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2answers
83 views

Extend mean-variance optimisation to fama five factor

I'm new to quant finance, and as I'm not a mathematician, I am using python to try an understand it. There are a number of blogs on the internet which explain mean variance optimisation, but no-one ...
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215 views

Factor model and trading strategy in options market

We all know that there are many factor models (CAPM, Fama-French 3...) and trading strategies (momentum trading...) in equity market. I wonder whether there are any analogous factor model and momentum ...
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1answer
181 views

Question about Fama Macbeth Regression (Confusion about paper)

I'm reading this paper Zura Kakushadze: 4-Factor Model for Overnight Returns https://arxiv.org/pdf/1410.5513.pdf and I am slightly confused about the methodology of the regressions. It says it uses ...
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342 views

why calibrate volatility and fix the mean reversion

I have had a few experiences or chats with teammates about the Hull-White model. The famous model has 2 parameters : The volatility The mean reversion Very often I hear that the mean reversion has ...
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260 views

What is the benefit of High-minus-Low as in Fama French model?

Can anyon explain the concept of using High-minus-Low in finance literature.
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71 views

explanation of factor tilts that uses mathematical notation

Can anyone provide a definition of "factor tilt" that uses mathematical notation? Perhaps factor tilts are based on factor regression models. Let's say that our returns vector $\mathbf{y}_t$ can be ...
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Machine Learnign for Factor Model python [closed]

I have read several articles about Factor Model using Deep Learning or machine learning, but none of them post the code. Where can I find the python code for anything similar?
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289 views

Full Revaluation vs Factor-based Model for risk management

I am looking for literature on comparison of these two approaches. It looks like many places are using some type of Factor-based Model (Barra, Axioma, Northfield, etc.) for risk management purposes. ...
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375 views

Interpreting Fama-French factors for the German stock market

I calculated the Fama-French five factors myself for the German market. Most of my results align well with prior research, except one thing: When i do the calculations for the sub-period from 2011 to ...
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1answer
117 views

Asset pricing model factor need to be excess return?

In John Cochrane's Asset Pricing book and his video lecture, he states that asset pricing factors need to be excess returns, a traded portfolio. Is there a reason for that? I can't find explanation ...
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Regarding the post-facto predictability of stock market returns

Almost all of the research on equity factor investing deals with a priori predictability of the cross-section of stock market returns (i.e., models which use variables and data that would've have been ...
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Are the explanatory factors for a firm's expected returns and its expected earnings/valuation multiples the same?

For example, the 3 factor Fama French model explains much of the cross-sectional variation in equity returns. Would these same 3 factors also explain the cross sectional variation in earnings/EV to ...
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126 views

Klein and Chow Orthogonal Transformation - Lowdin Orthogonalization

I've doing research on the orthogonal transformation in Orthogonalized Equity Risk Premia and Systematic Risk Decomposition They borrow a mathematical technique called symmetric orthogonalization ...
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1answer
67 views

Separating industry and market effects for an equity factor portfolio

I am running a regression to capture the risk factor exposures for a security and estimate its returns. To explain the variation in the security's returns, the predictor variables include a "general ...
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1answer
142 views

Crowding in factor investing; Solid metrics

I know this is a bit of a golden goose question as if someone had cracked it they'd be laughing. I'm wondering though, if anyone can point me in the right direction for any hard measures of crowding ...
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1answer
352 views

Exclusion of Utilites and Financials in Magic Formula

In Joel Greenblatt's magic formula, see https://en.wikipedia.org/wiki/Magic_formula_investing, why are utilities and financials excluded? What is the reasoning behind this?
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219 views

Why is the expected value of bias statistic one?

I have been reading about factor models recently. One of the ways in which the developer of these models (Barra/ Axioma) measure the accuracy of their models is by calculating the bias statistic for ...
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176 views

Lagged Residual as Independent Variable

I am building a factor model to estimate future equity returns. I'd like to include an autoregressive residual term in this model. I'd like to have yesterday's error (the difference between yesterday'...
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Dealing with missing factors

I have to deal with a factor investing strategy, with the particularity that I can't get a value for the factor for each date for each stock. Practically speaking, this is due to the fact that this ...
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1answer
114 views

Correct choice of SMB factor for regression models

I am currently conducting a performance analysis, where I use the 3-, 4-, and 5-factor models, hence $R_{it}-R_{Ft}=\alpha+b_{i}RMRF+s_{i}SMB+h_{i}HML$ $R_{it}-R_{Ft}=\alpha+b_{i}RMRF+s_{i}SMB+h_{i}...