# Jensen's alpha

> English word · Noun

## Definitions
1. A metric used to determine the abnormal return of a security or portfolio over the theoretical expected return.

## Etymology
First used as a measure in the evaluation of mutual fund managers by Michael C. Jensen in 1968.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/jensen-s-alpha