... J. Bos, CFASenior Index Analyst Standard & Poor s Roger_Bos@standardandpoors.comMichele RuotoloDomestic Index Manager Standard & Poor&apos ;s Michele_Ruotolo@standardandpoors.comSeptember, ... performance is not aguarantee of future results. GENERAL CRITERIA FOR S& amp;P U. S. INDEX MEMBERSHIP2ROGER J. BOS, CFA / SENIOR INDEX ANALYST, MICHELE RUOTOLO / DOMESTIC INDEX MANAGER, STANDARD & ... insure this by choosing only stocks with sufficient liquidity to be included in itsIndices. The liquidity measure Standard & Poor s analyzes is a version of share turnovercalculated as average...