Lipper Average also known as Lipper Index are a series of indices produced by Lipper, a subsidiary of Thomson Reuters, that establish benchmarks to measure the performance of a portfolio, or of various mutual funds and exchange-traded funds.
Historical trends, strengths and weaknesses can be evaluated.
Each index consists of the 30 largest mutual funds for each category.
Investments are grouped by sector, industry, country, and market capitalization.
The Wall Street Journal and Barron's carry some of the information supplied by Lipper Analytical Services on a regular basis.