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|Zacks Mid Cap Core Index|
|The Zacks Mid Cap Core Index is designed to identify companies with potentially superior risk-return profiles as determined by Zacks. The Index is modified equal dollar weighted, comprised of 100 securities selected from the universe of mid cap common stocks and ADR's based on a quantitative methodology proprietary to Zacks. The initial divisor was determined benchmark value of 100.00 at the close of trading March 31,1997. The Index was created and trademark of Zacks Investment Research.