Zacks Investment Research

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What Is Zacks Investment Research?

Zacks Investment Research is an American company dedicated to the production of independent research and investment-related content. Founded in 1978 by Len Zacks, armed with his PhD from MIT, hit upon a key discovery: Earnings estimate revisions are the most powerful force impacting stock prices.

The company provides professional investors with financial data and analysis helpful in making better investment decisions for proprietary accounts and the investment accounts of clients. Zacks is probably known best known for their extensive array of consensus earnings-per-share (EPS) estimates. More recently, the company has moved into other related areas including research reports, recommendation summaries on various stocks, stock prices, funds, charts and tables and a host of other investment tools and data.

Zacks Investment Research Explained

Zacks Investment Research is used by thousands of analysts at well over 200 brokerages to give clients reliable investment information. Zacks has also expanded its online presence and has begun offering more products designed for individual investors. Mobile and API options further make Zacks a favorite investment and business intelligence source for contemporary investors.

According to Zacks, the quantitative stock-rating system is purely mathematical. Meaning they’re not influenced by Wall Street or another agenda which may sway their ratings. As such, they’re trusted by almost all major financial data and media companies including Bloomberg, CapitalIQ, Morningstar, and the Wall Street Journal.

In 1981, Zacks began processing, organizing and evaluating research produced by U.S. brokerage firms. Today, Zacks receives daily electronic data feeds and printed research reports on more than 8,500 North American publicly traded companies from over 185 brokerage firms, produced by more than 3,200 analysts, amounting to over 500,000 pages of brokerage research. In addition, Zacks records 25,000 earnings estimate revisions and changes in broker recommendations weekly. This information is made available through institutional and non-institutional product lines and websites such as MSN MoneyCentral,,, and

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