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Have you seen how people react to it.

That's the market not manipulation. Listen to @karamyog 's last comment seconding my point.

"They can't manipulate cryptos, one has to account for these investments and report them as per SEC guidelines. All they can do it invest in a crypto hedge fund that plays in crypto markets. Money moving in and out has to be accounted for at banks and evidence has to checked by auditors. No banks are investing in crypto so far, only futures, if at all. And after volcker rule, trading using proprietary capital is very difficult for banks."

The futures market is directly correlated to the btc market. If you crash the futures you can then short btc until the prices equal out. And if you buy a whole bunch of futures you'll pump the btc market.

But they are not correlated. The futures market would have to be many magnitudes larger if one wanted to shock the btc market but even then this would not be direct manipulation. It would be the market opinion responding.