There are a lot of factors influencing the price of bitcoin, including technical issues/new alts coming out/regulations/stubborn miners/conflicts between developers(or groups)...etc.
What do you think is the most crucial cause? Why did the price drop dramatically these days? Will this be a rebound point?
I think it is because of panic selling of their bitcoins, that's why it is dramatically getting low right now and at the same time, a lot of altcoins now are opening and making their own name so that they can also attract people to buy with their coins and not with bitcoin.