Super Micro Computer ($SMCI (+0,03 %) ) and Deckers Outdoor ($DECK (-0,55 %) ) are included in the S&P 500 ($SPY (-0,46 %) ), while Whirlpool ($WHR (-0,15 %) ) and Zion Bancorporation ($ZION (-0,17 %) ) will be withdrawn. These changes will take effect before the opening on March 18 effective.