Guys we must remember that Bitcoin crashed hard after it reached that $1200 all time high and that history can repeat itself again this time around too. Bitcoin is a highly volatile asset and the price can go up or down overnight incurring huge losses to investors. There is no certainty about what the price will be at tomorrow or a week from now because it fluctuates likes crazy. Also a massive panic sell will see the price crashing down again. All I am saying is that Bitcoin might be the most profitable thing to trade right now, but people need to do this trading with caution.
All trading have caution as far as I know, and for trading a very high volatility item like Bitcoin, one should pay attention closely so you can sell your holdiing as soon as possible when sign of decline appear. Anyway at this moment Bitcoin is one of the best thing to trade because of the possible high profit you can earn from trading it.