I see no edges for either bulls or bears tomorrow mainly because tomorrow is FOMC which means anything could happen after 2:15pm ET.
Simply from the SPX daily chart, today’s Doji bar is 64% more likely to be a continuation pattern then a reversal pattern plus today’s Russell 3000 Dominant Price-Volume Relationships has 1002 stocks price down on decreased volume which also means a continuation. So I still see that SPX 878 will be tested (not necessarily tomorrow though).
Oh, in case you’re still interested: Here is the most recent Institutional Buying and Selling Trending chart from www.stocktiming.com. (Today’s data is not included)