Super Micro Computer ($SMCI ) and Deckers Outdoor ($DECK (+2,42 %) ) are included in the S&P 500 ($SPY (+0,47 %) ), while Whirlpool ($WHR (+1,48 %) ) and Zion Bancorporation ($ZION (+0,02 %) ) will be withdrawn. These changes will take effect before the opening on March 18 effective.