This chart shows distribution of AHFT flows for SPY: % AHFT buyers in green and % AHFT sellers in red. The proportions of the AHFT flows are estimated as a % of the total volume traded in SPY on 20230210. As the chart shows, there is more mass on the buyers side of AHFT flows than on the sellers side. The history of AHFT flows and their relative proportion over time also matters. The 20-day trendline shows the slope of -2.66%. This implies that the trend has been neutral.