Questions tagged [weights]

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Why stock beta is not equal to its index weight?

Index is a linear combination of stock prices with known weights. In case index is equally weighted, the weights are fixed. Beta measures stock sensitivity to index - by how much stock moves when ...
Kreol's user avatar
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portfolio weights based on past returns

In the academic paper Industries and Stock Return Reversals by Hameed and Mian (JFQA,2015) (see picture below), the authors describe a trading strategy based on reversal, which essentially buys past ...
user9875321__'s user avatar
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How to Normalize Weights When Weights don't sum to 100%

I'm working on a take-home assignment for a company. They want me to calculate the return of a portfolio of securities over time, given the returns of the securities over time and the initial ...
Python Developer's user avatar
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Calculating variance of long/short portfolio

Say I have a portfolio of stocks, stock A, stock B and stock C, with the below positions: stock A: long 100 USD stock B: long 50 USD stock C: short 200 USD How do I calculate the portfolio variance ...
Harry's user avatar
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Extend basket analytic solution (equal weighted) to a various weight basket, also put formula

So I coded up the solution from here: Do basket options have a closed form valuation formula? Which provides a good solution for equally-weighted underlyings under a Black model. The simplified ...
Matt's user avatar
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FX weights and P&L

How to correctly express basket of currencies in and index, such that P&L would align? Assume our index is 20% EURUSD and 80% GBPUSD and rates are 1.10 and 1.31 for T1 and 1.05 and 1.35 for T2. On ...
John's user avatar
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How to compute portfolio weight of forward contract

how would one formally calculate the portfolio weight of a Forward position? Suppose I have 100 mio portfolio. I have 50mio in Tesla shares and I have 50mio in Microsoft shares, and I enter into a 1 ...
mbison's user avatar
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