I heard in stocks, this is called shorting. But i read if you short, you could lose a huge amount of money. Could you do this with bitcoin? Example my thoughts were hey its the holidays, so most likely ppl will withdraw money and thus btc drops. So i figure around now, btc price would drop.
The whale's psychology is not as easy to speculate as you might think. They always have charts to analyze the psychology of traders before deciding to lower prices or raise prices.
But anyway, invest based on your hunch. I think it will help a lot in the crypto market, which always changes in a confusing way.