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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69 views

how to implement momentum strategy for stocks in R

Good morning, I'm implementing factor investing strategies to choose stocks to insert in a portfolio. I have calculated low volatility factor and now I would to calculate momentum of each stock so ...
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Factor investing and PCA

I'm struggling to understand how Principal Component Analysis (PCA) is used in Factor Models of returns. For example, in the JPMorgan paper (p.19) the authors write: In a multi asset portfolio, factor ...
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38 views

Measuring Information Coefficient and Sharpe Ratio

I have been looking through / using Quantopians' Alphalens library to measure/create new factors, and I had some questions in evaluating the credibility of the factor. This is what I have: I have ...
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51 views

What's the intuition behind factor grouping?

From the book "Finding Alpha", written by a popular quant fund WorldQuant, explains many techniques about quantitative investing but intentionally omits many of the caveats and applications ...
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SML Interpretation

I follow this paper and estimated two different asset pricing models via systems of deep neural networks. Both models have the exact same input: firm-specific features for 10'000 (unique) US stocks ...
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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 ...
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39 views

Nasdaq and HML factor positive coefficient

I am using the HML factor from Fama French’s website and have always assumed that a negative coefficient indicates that the portfolio has a tilt towards growth stocks. When I however perform a simple ...
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1answer
48 views

Fama-French vs. Arbitrage Pricing Theory of Ross

Is there a specific reason for why Fama-French papers on CAPM extensions do not refer to APT of Ross? In textbooks, APT is always an extension of CAPM and the foundation of extending the set of risk ...
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26 views

PCA on mixed types of returns

I'm looking for some resources on how to use the PCA technique in the case of mixed return types, i.e. lognormal (say for FX, equity indices) and normal (rates). The idea is to create a factor model ...
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71 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 ...
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1answer
66 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 ...
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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 ...
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106 views

Why is diversifiable risk unrewarded?

I am currently looking through some actuarial study materials (CM2, formerly CT8) in which models of asset returns are being discussed. One such model is the market model (A.K.A The single-index model)...
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FF factor benchmarks

I have a question to think about. I have constructed a portfolio of AMEX/NYSE/NASDAQ firms. After some data manipulation and cleaning I am left with some 4000 firms over the complete sample (max 1600 ...
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APT - Pricing Factors that are not Statistical Factors

Arbitrage Pricing Theory makes the implication that statistical factors (i.e. those that explain covariances) imply pricing factors (i.e. those that explain returns). Is the reverse implication (i.e. ...
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117 views

Is there a good guide/mind map for factors of quantitative trading?

I have know there are many factors , they can divied into several groups in my opinion group 1 are some factors called P/E , ...
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What can one do with cross-sectional relationships?

This is somewhat of a broad question, but I think we all would like to find signals that predict something in the future. However, often times, we are just left with cross-sectional relationships (...
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Some questions to canonical correlations between principle components and asset pricing factors using R

I have done a asympotical principle component analysis (APCA), using eigen() in R, of the covariance matrix of a global dataset of excess returns. I took the ...
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1answer
79 views

How would you in practice use factor models (like Fama French) to make decisions?

So I understand that the Fama-French factor model relates a stock's excess return with its beta, market cap, and book to price. How does one use the model in practice? Do people assume that market ...
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43 views

Currency conversion on factors

I am a bit confused on this I have 3 factors Global credit (in excess of treasuries) hedged in USD Currency factor, essentially long a basket of currencies and short dollar = -DXY index Term factor ...
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1answer
89 views

Fama MacBeth 2 step regression (2nd part)

I get the first part of the regression, basically it is a time series regression of returns on the proposed factors. So, I need to run the regression of monthly return on the monthly time series of ...
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34 views

Barra equity factor model handling equity index future

How is equity index future handled in Barra type of equity factor model, i.e. to get its market value exposure to various factors? Does one just treat it as a weighted combination of underlying single ...
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1answer
137 views

How to do Fama French (1993) cross sectional regressions? A few questions

I am still relatively new to asset pricing factor models and have a few questions about my current empirical study. I would be very pleased if you could help me. I have created a new factor which I ...
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38 views

Constructing a replicating portfolio of a long-only strategy using long-short factors

Lets say I want to estimate a replicating portfolio by doing a linear regression between the returns of a long-only portfolio and several long-short factors like Fama-French 5-factor or Betting ...
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57 views

Univariate Portfolio Analysis

We want to form 10 portfolios based on the level of VAR (99%) for equity data over a 30 year period. Portfolio 1 is the portfolio of stocks with the lowest value-at-risk and Portfolio 10 is the ...
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38 views

FF 6-month lag of the accounting variables

I have a fairly short and straightforward question. I am running a dynamic optimization strategy and therefore need to construct the FF5 characteristics. I am using COMPUSTAT quarterly accounting data....
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Asset Pricing and inferences - Intercept and relationship to returns

Ideally this question is very similar to What's the meaning of the intercept in asset pricing model? I am regressing a "buys minus sells" portfolio returns to the Carhart factors. The intercept ...
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How do you build a model with uncertain time range?

Let's say you want to test the hypothesis that given a signal reaches some threshold, some asset will have some return over the next period. Here we have two unknowns. One, the value of your ...
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70 views

Fama Macbeth and Momentum factor

I am working on a Fama MacBeth regression with excess returns on the LHS and Size, Value an Momentum factors on the RHS. In literature, the Momentum factor is often definded as the cumulative past 6 ...
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41 views

Statistical significance of mean returns between two portfolios

Suppose I have developed two versions ($A$ and $B$) of a factor model for ranking stocks. Both versions of the model use the same scoring system: stocks are percentile ranked within a given universe ...
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1answer
73 views

(Yearly) Hedge Fund alpha

I am currently trying to make the best of quarantine by getting familiar with Stata by working on a little project. As the title states, I want to compare yearly alphas of Hedge Fund strategies. I ...
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Transform Hierarchical Correlation structure to Standard Form

In the standard portfolio risk setup, we have $\sigma_{\Pi} = \sqrt{(w' B (VFV) B' w) + w'Dw}$ where $w$ is our weight vector for N assets $B$ is the Nxm factor beta matrix $V$ is the factor ...
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199 views

Volatility Managed 6 Factor Model (Fama French) - Does it make sense?

after weeks of intense research and in spite of the current situation, I decided to ask the following question to some experts (you): I would like to develop/investigate a volatility managed six ...
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Question about equation (7) - Asset Allocation vs. Factor Allocation—Can We Build a Unified Method?

Question regarding the article Asset Allocation vs. Factor Allocation—Can We Build a Unified Method? by Jennifer Bender, Jerry Le Sun and Ric Thomas, The Journal of Portfolio Management Multi-Asset ...
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593 views

How does volatility skew change with underlying spot?

We know that generally ATM implied vol is negatively correlated with the underlying spot for equity indices, i.e. implied vol goes up when spot moves down. Therefore I wonder if there are any ...
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239 views

How to orthogonalize Fama French factors?

The Fama French factors (e.g. size, value) are not orthogonal to each other, so when e.g. you want to create a diversified portfolio of factor mimmicking portfolios (factor investing), the correlation ...
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1answer
164 views

Are Fama French Factors market neutral?

I was wondering whether the famous fama-french factors such as e.g. SMB and HML are market neutral? I know that they are long-short factors in the sense that the net investment is essentially zero, ...
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1answer
103 views

Three-factor model: Why not own company value/size

I have the following well-known formula for Fama and French's three-factor model $ R_{it}-R_{ft}=\alpha_i+\beta_1(R_{m,t}-R_{f,t})+\beta_2SMB_t+\beta_3HML_t+\epsilon_{it}$. My question is: Why do ...
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Benchmark for fund in Fama French 3 factor setting

I found this question during my preparation for an exam. It looks easy, but I am not quite sure how to answer it. Consider a fund A with following factor exposures $\beta_{M}=0.8$, $\beta_{SMB}=0.4$,...
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221 views

Multi Factor rolling beta

I want to monitor HF/CTA long/short position and calculate beta on different HF indices in Excel/VBA, see graph below. I can't seem to find any papers on "Multi-factor based rolling beta", so my ...
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43 views

How to optimizer alpha signals when the estimated uncertainty of signal is known

Suppose we have the alpha signal $\alpha_i$ for a collection of $N$ stocks $i=1,2,...,N$. Typically, we will use $\alpha_i$ to construct our portfolio as $$ P=\sum_i \alpha_i \cdot S_i $$ with $S_i$ ...
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141 views

Fama-Macbeth Regression: Weird Risk Premia

I just conducted a Fama-Macbeth regression where in the first step I calculated a time-series regression for each individual stock to get three betas (for mkt-rf, smb, hml) for each stock. Then I ran ...
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1answer
107 views

Demonstration of the Schweinler-Wigner Orthogonalization procedure

Can anyone give me a practical demonstration of the Schweinler-Wigner Orthogonalization procedure? The steps of performing it or possibly a code snippet. The Schweinler-Wigner Orthogonalization ...
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1answer
409 views

Fama Macbeth regression with rolling window

I am confused about how to run fama macbeth regressions for portfolios with rolling window. For example if I have 25 portfolios and time period is 50 years(monthly), rolling window period is 5 years. ...
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94 views

Alpha generation and factor models

I have studied factor models in a very introductory manner, going through there Fama-French model and then APT. I understand the concept of decomposing returns into factors, but I don't understand how ...
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1answer
60 views

Fundamental factor models: what to move to the LHS

My question is simple: what is the best practice in moving known variables to the LHS of Fundamental Factor Model regression? I am seeing different approaches. $R_{it}=\alpha_i + \beta_{i,1} f_{1,t}+ ...
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1answer
74 views

How do weights of a Mean-Variance optimized portfolio change as the Covariance matrix of the risky assets change?

I am learning a bit more about CAPM, and wanted to know if there was a specific way that weightings of assets in the optimal mean-variance portfolio changed (for constant risk aversion, expected ...
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1answer
111 views

How to test ESG score as a factor against traditional factors

I have created my own ESG scoring system. I would like to test it as a factor against the traditional factors (growth, Value, quality, size etc) In essence a correlation test. Could anyone please ...
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1answer
94 views

Highly skewed (and positive kurtosis) return distribution as a dependent variable

I have two set of optimized returns over a period of time and called this portfolio 1 and 2 and two benchmark portfolio (a value-weighted and equally-weighted benchmark). I want to see the difference ...
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Is there a good book/blog on applying statistical methods in finance? [closed]

I am learning a lot of tools in statistics, but I am having a hard time figuring out where I could apply these methods in finance, especially in relation to investment and trading. Is there a good ...

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