Monday SPX open===1806.21 SPX close==1808.37 SPX low====1806.21 SPX high===1811.52 Tuesday SPX open===1807.60 SPX close==1802.62 SPX low====1801.75 SPX high===1808.52 Wednesday SPX open===1802.76 SPX close==1782.22 SPX low====1780.09 SPX high===1802.97