Scroll down for seasonal data. The seasonal influence is at the point where it turns from positive to negative.
A spike in ETF volume relative to regular volume generally precedes a price event, more often than not to the upside. As a student of the overall scheme of things the appearance is that when the privileged get the signal with a wink and nod that stock prices are about to be move up, increased ETF volume is part of the preparation.
At this point in time, for the privileged, moving the market higher is much like a life and death matter. There is power involved here as well as money. This is the first time where efforts to goose financial markets are being totally telegraphed and now almost universally expected. The time will come when all the central banks in the world working together will not be enough lift stock prices. That will be the time when the bottom falls out from under all financial markets and chaos ensues. This is a critical year and all efforts will be made to skip weakness in stock prices during September and October. It may work. It may not.