From the weekly charts of the SPY, you see that when prices dropped from the week of July 19 to the week of Aug 9, the volume increases (with a spike in volume on 5 Aug) but when prices increases from the week of August 16 to August 30, the volume decreases, showing a lack of interest to push the prices higher. There is also a double top chart pattern formed, telling me that sellers might be coming in for the short term. Hence, I’m bearish on the SPY in the short run unless things on the chart are telling me otherwise.