Iam not sure its the exchanges but i am certain that someone with a huge quantity of bitcoins is selling them and that is why the prices are currently dropping because i don't see any FUD happening anywhere yet the value is still going down.
People don't trust Bitcoin after the fees hit $55 per transaction and many people can understand that the lightning network is
a system of small banking hubs so they are cashing out or running away because many of the old names moved to Bitcoin to get away
from bankers and if block-chain brought you here then the off-block lightning network should send you packing too.
Lets face it, we have been sold out