Institutional rebalancing could keep us in this range for two more days (month and qtr end). There is no way to know how much mandatory buying is left in real time. Some of the major firms have data to guess and JPM stated Friday that there is still more buying that need to be done.
For those not familiar, this is buying that occurs for pensions and other fund that have mandated diversification levels to maintain ( like a 50% stock 50% bond fund) When an asset class moves 30% in a short period and at the end of a quarter it creates billions in rebalancing to maintain ratios.
They may have finished most of that buying last week and it’s also possible to overwhelm that buying with new selling, but it definitely has an affect on the market. Same thing happens in December 18 but in that case it was followed up by a several week period of strong inflows into the market , I just don’t see that happening right now given outlook.