tidy-finance / website

This repository hosts the source code for the website tidy-finance.org
https://tidy-finance.org
Other
86 stars 49 forks source link

Incorrect efficient portfolio weight (small mistake) #45

Closed FrederikIngemannOlsen closed 1 year ago

FrederikIngemannOlsen commented 1 year ago

The equation for the efficient portfolio weight in the book is written as:

\omega_{\text{eff}}(\Bar{\mu}) = \text{arg min $w '\Sigma w$ s.t. $ \omega' \iota = 1$}

When it should rather be:

\omega_{\text{eff}}(\Bar{\mu}) = \text{arg min $\omega '\Sigma \omega$ s.t. $ \omega' \iota = 1$}