The powers that be have a tremendous amount on the line so the theory is not far fetched. . If I was them, that is what I would do.  Push large sums in and out just to determine how fast and how much money is actually flowing in.

Another possiblity is that an institutionl (whale whatever) trader could be manipulating the market for a profit.

They would stand to make a killing on the pump PLUS more way more profit on the margin side in the process.

Say it took $100m (guessing on the amount) to pump the market 10%. They would make money on the pump on a regular trade PLUS another say 50x that on the margin side just on the way up.  Then ANOTHER 50x that on the way down margin trading.

There is always an underlying explanation for volatility.


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