# Active Management and Information Ratio


## [A Quantitative Approach for Providing Superior Returns and Controlling Risk](http://cslt.riit.tsinghua.edu.cn/mediawiki/images/a/a7/Active_Portfolio_Management_-_A_quantitative_approach_for_providing_superior_treturn_and_controlling_risk.pdf) Richard C. Grinold, Ronald N. Kahn

2020 [Dispersion and Alpha Conversion](https://www.morganstanley.com/im/publication/insights/articles/dispersion-and-alpha-conversion.pdf) Michael J. Mauboussin, Dan Callahan
How Dispersion Creates the Opportunity to Express Skill

- 1st page [The fundamental law of active management](https://jpm.pm-research.com/content/15/3/30) Richard C. Grinold

definition https://www.panagora.com/assets/JOIM-Active-Risk-and-Information-Ratio.pdf

- [Alpha is Volatility Times IC Times Score](https://jpm.pm-research.com/content/20/4/9)

https://web.stanford.edu/class/msande348/papers/Grinold_paper.pdf

[Grinold and Kahn do their best. Grinold, 64, studied physics at Tufts](https://archive.fortune.com/magazines/fortune/fortune_archive/2003/06/16/344194/index.htm)

## Sharpe and Information

https://en.wikipedia.org/wiki/Sharpe_ratio
**The information ratio is a generalization of the Sharpe ratio that uses as benchmark some other**, typically risky index rather than using risk-free returns
https://en.wikipedia.org/wiki/Information_ratio

## supplementary



https://www.firstquadrant.com/system/files/0011+Thoughts+on+Grinold+and+Kahns+Fundamental+Law+of+Active+Mgmt.pdf

# Parents

* Leverage, Uncertainty, and Edge - F
* Risk Management⏎