Fed leaves rates near zero, vows to use 'full range' of tools to help economy $SPY $SPX $QQQ $AAPL $NFLX $AMZN $SHOP $CHWY $ZM $BA $TSLA $FB $MSFT $QCOM $GLD $SLV $GE_F $BABA $XOM $JPM $GS $GOOG $DIS $IBM