Institutional Brokers' Estimate System (IBES) A system that gathers and compiles the different estimates made by stock analysts on the future earnings for the majority of U.S. publicly traded companies. Investopedia Says: The IBES is a central location whereby investors are able to research the different analyst estimates for any given stock without necessarily searching for each individual analyst. Related Terms: Analyst Consensus Estimate Earnings Earnings Estimate Earnings Recast Earnings Surprises |